458 The second Part of My Long Mailbag
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День томуThis is the second part of my long mailbag video. It contains some products, some explanations, and experiments. And it shows a bit of my side projects.
My second channel: / hb9blawireless
Links:
UPS:
AliExpress: s.click.aliexpress.com/e/_DDS... (it seems that shipping cost increased)
eBay.com: ebay.us/aSw2uF
eBay DE: ebay.us/OUXDI4 (18W version)
Amazon.de (without PoE): amzn.to/3PiLVxO
The "SVC ECO PLUS 8100" was also proposed by a viewer
Hi-Link power supply: s.click.aliexpress.com/e/_Dmm...
Effortless Extruder: s.click.aliexpress.com/e/_DB2...
Daly BMS to MQTT: github.com/softwarecrash/DALY...
Chapters:
00:00:00 Intro
00:00:22 Versatile and cheap UPS
00:04:28 Small insulated power supply (with lots of explanation)
00:09:22 Effortless Extruder for flux etc.
Patreon supporter companies:
passiv-energie.gmbh/
www.welectron.com/
yosmart.com/
UKpostsr Patreon: / @makersmashup
The links above usually are affiliate links that support the channel (at no additional cost to you).
Supporting Material and Blog Page: www.sensorsiot.org
GitHub: www.github.com/sensorsiot
My Patreon Page: / andreasspiess
Discord: / discord
If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission on your purchases to buy new stuff for the channel
My Amazon.com shop: www.amazon.com/shop/andreassp...
For Banggood bit.ly/2jAQEf4
For AliExpress: For AliExpress: bit.ly/3MtXUY8 (just go on from here to your product)
For Amazon.de: amzn.to/2r0ZCYI
For Amazon UK: amzn.to/2mxBaJf
For ebay.com: ebay.to/2DuYXBp
profile.php?...
/ spiessa
www.instructables.com/member/...
Please do not try to email me. This communication channel is reserved for my primary job
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@Knatte_Anka 10 місяців тому
For a Syringe dispenser there is also this alternative on printables: "Yet another flux Dispenser" it does the same thing but is 3dprinted and just 2 bolts and nuts
@AndreasSpiess 10 місяців тому
Looks good if it is stiff enough. Did you try it?
@Knatte_Anka 10 місяців тому
@@AndreasSpiessno not yet. Printed it today handle laying down(to have better stiffness) with some support but have to get a longer screw from the job tomorrow before i can test
@plazmax 10 місяців тому
@@AndreasSpiess i printed 5 of them it works same
@walterelsenhans6100 10 місяців тому
My comment to the white power supply: As I could see, the power supply includes 4 Lipo batteries with 2600mAh capacity each. The batteries are connected in serial (not parallel!), so the capacity is only 2600mAh and NOT 10400mAh!
@Remigius0815 10 місяців тому
Exactly - they always relate capacity to single cell voltage which is not useful and just generates shiny high numbers. Capacity in Wh would be much more meaningful.
@FonsKnaapen 10 місяців тому
Indeed. So theoretically it would be 2,6A x 3,2V x 4 = 33,28Wh. At the given 36W capacity and assuming no internal losses it would last about 45 minutes. A raspberry pi 3 that uses 8W on average would last a little bit over 4 hours.
@john_hind 10 місяців тому
Agreed! It is just plain wrong, and false advertising, to state the capacity of a UPS, particularly a multi-voltage one, in Ah! Wh is the correct unit. Even when selling individual cells, Wh is better since the output voltage of the cell will vary depending on state of charge and load. Just as bad in my book is the abuse of the SI prefix system to give a larger number. It is 10.4Ah, not 10,400mAh! We need a 'Campaign for the Protection of the SI'!
@AndreasSpiess 10 місяців тому
I agree, mAh is not a good specification for a device providing different voltages. You can even try a dispute because of wrong specs if you bought one ;-) With my video you know what you can expect and do your calculations (as Refthoom did).
@FonsKnaapen 10 місяців тому
@@AndreasSpiess That's true your videos are always very clear, I like that very much. By the way, is the 5V adjustable? You showed it was 5V exactly and 4.9 at 1A. For a raspberry pi 3, 5.2V is the ideal value to prevent low voltage warnings and possible brown outs.
@RickRolling-tc7vb 10 місяців тому
Always learning new things from you, Andreas. Thanks for keeping my sense of wonder alive, really appreciate it.
@AndreasSpiess 10 місяців тому
My pleasure!
@VK3TWO 10 місяців тому
I have 2 of those UPSs. One I've had for a couple of years. Good units.
@AndreasSpiess 10 місяців тому
Thank you for sharing your experience! So there is hope our station will run for a long time ;-)
@VK3TWO 10 місяців тому
@@AndreasSpiess I even expanded the batteries for more capacity. I have had a blast in the several times I was in HB9. Did several of the Zurich SOTA summits, and the mont Blanche (in winter).
@AndreasSpiess 10 місяців тому
@@VK3TWO I saw on QRZ that you live off-grid. So you need reliable batteries ;-)
@opsahle2 10 місяців тому
Thank you for the tip regarding the UPS, looks great! Ordered one now to use primarily on the RasPi that runs my home automation.
@AndreasSpiess 10 місяців тому
I hope it will work (I did not test it with a Pi4).
@john_hind 10 місяців тому
Small language note from a pedantic speaker of the King's English: @9:35 'overseen' means 'supervised', as in 'my work was overseen by a qualified engineer'; the word for 'missed' or 'ignored' is 'overlooked'. Feel free to correct my non-existent Swiss German at any time!
@AndreasSpiess 10 місяців тому
Thank you!
@molitovv 10 місяців тому
That UPS would be great for backing up IOT devices in remote locations.
@AndreasSpiess 10 місяців тому
If you need the different voltages it would be a good choice, I agree.
@AerialWaviator 10 місяців тому
The flux gun (effortless extruder at 10:37) is a great idea. Design looks simple enough it could be made as a 3d-printed item. A quick search verifies there are a number of existing designs variations under 'flux dispenser'. Thanks Andreas, all items covered in this 2-part series were interesting.
@AndreasSpiess 10 місяців тому
The 3D printed parts have to be quite sturdy. Otherwise they probably will bend or break. But it is worth a try!
@yancymuu4977 10 місяців тому
Another thought. BMS products that I have seen operate with milliamp balancing current. I have a DIY approach that switches on one ohm resistors and draws about 3.5 amp balancing current. I am able to balance only when my batters are above 3.39 volts (close to fully charged --- I charge only to 3.45 volts). This seems to work pretty good with my old and mismatched batteries. Thanks for your great videos.
@AndreasSpiess 10 місяців тому
Modern batteries do not differ a lot. So a small balancing current seems to be sufficient in the long run. I added an active balancer to my setup but disconnected it as a default. I plan to connect it only if I see a major imbalance. Below 3.45 volts, my cells do not differ a lot. Only after 3.5V they start to be different.
@yancymuu4977 10 місяців тому
@@AndreasSpiess yes. However if you charge to a lower voltage (e.g. 3.45v vs 3.55v) the imbalance will manifest at a corresponding lower voltage. Also, for my system, saving energy with an active balancer is not useful as my batteries usually get fully charged 3/4 of the way through an average day and any energy saved with active balancing just gets uncollected. No balancing happens on a cloudy day.
@emilalmberg1096 10 місяців тому
Thank you for your nice videos where you are calm and to the point, we need that in these troubled times. By the way, it was nice that you said ten amp hours, instead of ten thousand milliamp hours. People need to learn prefixes, but we have a hard time relearning.
@AndreasSpiess 10 місяців тому
10000mAh sounds like much more than 10Ah. Sells better with our loud times ;-)
@dan-nutu 10 місяців тому
Hi Andreas and thanks for the video. Could you please check the DC outputs of the white UPS with an oscilloscope and confirm how clean the output voltage is? (I don't own a scope) Many thanks!
@AndreasSpiess 10 місяців тому
The scope showed 28mV RMS on 5V
@dan-nutu 10 місяців тому
Vielen Dank, Herr Spiess! And is it safe to assume that the peak to peak is in the region of 2.8...3.5 * RMS, i.e. less than 100mV?
@EgonSorensen 10 місяців тому
In last weeks video you showed the mini hotplate MHP30 and said it was great to pre-heat, no doubt there :ø) I would suggest getting some low-melt solder, possibly also paste, that melts at/below 138 degrees C. Wet the solder joints with this using a regular soldering iron, then use the hot-air set at a 150 degrees C - and you can remove defective module(s) without risking desoldering nearby components. This is also excellent if you have components on the bottom, which makes the hot-plate unusable.
@AndreasSpiess 10 місяців тому
Thanks for the info. I never used such solder (I saw it once in a video). Maybe I have to give it a try...
@lucianbetke 10 місяців тому
Ich liebe den Darsteller. Das Englisch ist Bombe und ich sitze bei ihm gerne in der ersten Reihe.
@FonsKnaapen 10 місяців тому
Bitte versuche hier auch einiges Englisch, gibt hier viele leute die Deutsch nicht verstanden. Und meine Englisch ist auch besser als meine Deutsch :-)))
@AndreasSpiess 10 місяців тому
@Lucian: Vielen Dank!
@stanicicpita 10 місяців тому
The continuation of the video is very interesting.
@AndreasSpiess 10 місяців тому
Glad you liked it!
@HarryCountry 10 місяців тому
WOW! Andreas, I think they have see the success of this video and immediately raise the price of the UPS! 🙂It's now $43 + $30 shipping!
@AndreasSpiess 10 місяців тому
I think it happened after I made my video. All other suppliers did the same. So it is independent from my video. But I found links on eBay with reasonable prices (in the description)
@StefanMX 10 місяців тому
The Hi-Link DC-DC converters came out to be very reliable, efficient and low on EMI emissions. Absolutely recommended.
@AndreasSpiess 10 місяців тому
Thank you for this information! Good to know.
@rickharold7884 10 місяців тому
Super fun and fascinating
@AndreasSpiess 10 місяців тому
Thank you!
@Chris-ut6eq 10 місяців тому
Any of your mailbag videos are dangerous for me to watch. You have great taste in picking interesting items, so I get excited and want to buy stuff. I never used to like shopping until I found aliexpress many years ago. It gives me that same sense of wonder I had as a kid when I'm off exploring and find new and exciting things to play with. :)
@AndreasSpiess 10 місяців тому
Maybe we understand women better now ;-)
@Chris-ut6eq 10 місяців тому
You would not believe how much money I saved today on AliExpress! :)
@ahaveland 10 місяців тому
If those cells are in series, then the capacity isn't 10400mAh, its 2600 mAh at 14.4V nominal. Really irritating that some advertisers just add up the mAh of all the cells in the battery, and completely ignore the configuration! Using watthours would give much more accurate and informative measure of capacity than Ah, which requires a voltage to give it meaning.
@AndreasSpiess 10 місяців тому
I agree!
@claudiomoles 10 місяців тому
Excellent, I designed and built one power bank with 5V, 12V output 3 years ago for my internet router and fiber modem, live in a country area where grid interruptions are more or less frequent and I got tired of APS UPS devices that beep like crazy and turn bright LEDs on when power is down (I really do not need this, I know when power is down), besides it only gives about 30 minutes of ups, mine, with 8 li-ion batteries gives me more than 9 hours of ups reliably!
@AndreasSpiess 10 місяців тому
I also had a Eaton UPS because I also wanted to protect my 230V PC. But it was defective and went back to the supplier. Maybe I go your way instead of buying another standard UPS...
@rtos 9 місяців тому
The individual battery cell wires you mention may not be only for balancing. Power banks usually connect cells in parallel and has a boost converter to obtain 5V. However in this case the cells may be connected in series to get a higher voltage, and they may be passing it through a buck converter to derive 9V & 12V outputs.
@AndreasSpiess 9 місяців тому
You are right. 5V power banks often do that. I think I measured the overall voltage and decided they were connected in series.
@crckdns 10 місяців тому
9:30 ...my problem is not to buy flux/solderpaste, but to choose WHICH flux/solderpaste to use :D most DIY/fixing channels have their own brands/shops and won't tell the original name/supply so they can get the money. but yeah, solderflux is really underrated!
@AndreasSpiess 10 місяців тому
I only use a cheap AliExpress flux that does the job. But I am no soldering specialist.
@crckdns 10 місяців тому
@@AndreasSpiess yeah I understand that, but even now you're saying "I use what works" - while there are hundreds of shops selling flux, original and fakes, bad and good ones - so I would have to buy each from the hundreds and test for quality. That's the problem, the ones who found a good one, don't tell which one (which shop especially) is selling good one 😹
@Remigius0815 10 місяців тому
The UPS you linked costs twice as much shipping to Germany !!
@TecSanento 10 місяців тому
Because it includes taxes right?
@Remigius0815 10 місяців тому
@@TecSanento No. That only explains a fraction.
@AndreasSpiess 10 місяців тому
Thank you for the info. It is sold by many different stores. Maybe you find one which does a better job for Germany.
@raymitchell9736 10 місяців тому
Thanks for the product tips.... The "back-power" problem can cause annoying problems besides destructive. I often have an UART and/or JTAG plugged into a board that I really want to power off the processor so I have to disconnect everything to be assured I am completely resting the processor. But in your case I can see why you thought the way you did, I'd probably fall victim to the same thing, don't feel too bad. Neat solution for $5 but.... really? Sigh! 🙄 I'm with you on having a solid, dependable ground!
@AndreasSpiess 10 місяців тому
Because I had two casualties in a row with this ground issue, I hope it is hammered in my (old) head now ;-)
@raymitchell9736 10 місяців тому
@@AndreasSpiess Ah! I recognize that one... First time it might be a fluke, second time... Hmmm Can't be two bad modules in a row... and just about to make it 3rd time's a charm when you say: "Uh oh... could it be!?!?" And that's when you "see it"
@raymitchell9736 10 місяців тому
@@AndreasSpiess Okay story time... so I have a music studio and I have equipment plugged in one side of the room with old wiring and other equipment plugged into the other side room with new wiring and a real ground. When I plugged an audio signal into my mixer I got a POW!!!! and after 2x I realized what was happening... I found 50V AC between the grounds... so I ran a #12 ground wire from the new wiring to the old wiring and solved the problem... then I needed to get my mixer repaired I had a dead channel. Zapped it to death! Oh how well I know how important the ground is.
@ferrimy 9 місяців тому
Hello Andreas, thanks for excellent videos, always learning the EE theory and that's greatly improves my understanding of electronics. I'm struggling to understand the reasons you are describing at 5:20. Can you please expand this in a separate video and provide the examples with the common ground and this low side. I'm interested because I'm going to implement open source BMS with IoT load along with few motors and this looks very similar to what you have on your diagrams. Thanks!
@AndreasSpiess 9 місяців тому
If the BMS stops, you can see it as an open switch. The converter still is connected to 24V and, if it has some internal resistors from plus to ground, its ground will be at a higher voltage (it acts like a pull-up resistor connected to 24V). Just replace the input side of the converter with a high-value resistor in your mind.
@gabest4 10 місяців тому
There is 5/9/12v+USB mini ups on ali, it comes without batteries and very cheap. I used to have one with welded-in batteries and it was a pain to replace the cells.
@AndreasSpiess 10 місяців тому
I did not find it. Can you provide a search term (UKposts does not accept links)
@gabest4 10 місяців тому
@@AndreasSpiess I put no link, only the item number, and my comment was still removed... Let's try again. "diy 18650 ups" Black, 3 or 6 empty cells holders. There are many offers.
@AndreasSpiess 10 місяців тому
@@gabest4 Now I found it. Thanks!
@yannkitson116 10 місяців тому
Ah I thought by the look of the component that it was the Hi-Link HLK-M50 WiFi unit you were going to talk about. My solar charge controller uses one of those and I want to hack into the communication so I can use the data for better analysis than offered by the standard app. Anyway, good video and let's hear more about how it goes with the BMS :)
@AndreasSpiess 10 місяців тому
Maybe you can read the serial data of your BMS entering the Hi-Link HLK-M50? This is what my ESP8266 does...
@yannkitson116 10 місяців тому
@@AndreasSpiess Yes, great idea. Thank you!
@LackofFaithify 10 місяців тому
I saw a switch on there yesterday that also doubled as a solar charging coordinator for an attached battery to use as backup for the switch and the poe ports. Was almost tempted but, someone else can go first. On the UPS, each cell is 2600mAh, 3.7V with them in parallel to hit that 10,400mAh capacity, that means it's all step up, lots of waste both on the stepping up to power something as well as all that circuitry for something so inefficient. Be curious to see what actual run times would be on the devices plugged into it as well as its discharge amps are at 12V.
@AndreasSpiess 10 місяців тому
A quick test on 12V/1A gave 26.8Wh
@yancymuu4977 10 місяців тому
I sometimes lose sleep worrying about grounding problems on my diy solar system. Easy to damage stuff!
@AndreasSpiess 10 місяців тому
I agree!
@PokettoMusic 10 місяців тому
cool stuff
@AndreasSpiess 10 місяців тому
Thank you!
@SmithyScotland 10 місяців тому
The UPS looks very interesting. £25 for p&p though but agree the overall price looks good. Presume part of that is the UK tax also.
@AndreasSpiess 10 місяців тому
Pricing changed considerably since I made my video...
@therealemmpunkt 10 місяців тому
I´m using an ESP directly on the port of the Daly-BMS, so even the power supply. No problems so far...
@AndreasSpiess 10 місяців тому
My BMS did not provide enough power for the ESP8266. The project description mentions that some versions provide enough current. So you were lucky...
@toastrecon 10 місяців тому
I wonder if it'd be possible to 3D print the ergonomic syringe handle? Obviously, they're really cheap, but you wouldn't have to wait for shipping. Great video!
@opsahle2 10 місяців тому
Should absolutely be possible, but needs to be beefed up a bit I think to take into account the structure of the 3D printed part. Especially solder paste (in my experience) needs quite a bit of force to get out of a syringe with a thin needle.
@AndreasSpiess 10 місяців тому
Other commenters found ready-made 3D designs. So it should be possible.
@fu1r4 10 місяців тому
0:58 You mean 120 and 230 volt (UK even have 240 volt) or as the label shows 85-265 volt 😀 It looks like the 18650 cells are connected in serial. If you connect 4 cells in serial you won't get 10400 mAh, you get 2600 mAh.
@AndreasSpiess 10 місяців тому
You are right!
@bjarkekorsgaard 8 місяців тому
Hi This is regarding the BMS2MQTT in Home Assistant. I have made many NODE RED flows and they all works very nice. I can receive the mqtt data from the BMS2MQTT device connected to my Daly BMS and I have a working "influxdb out" that can send data to the database. My problem is unfortunately, that the data from the BMS2MQTT can't be converted into the JSON format in a "mqtt in node", needed in the "influxdb out", and I get errors. How did you manages that issue? Best regards Bjarke
@AndreasSpiess 8 місяців тому
I used this functional node in front of the influx node: msg.payload = [{ volt: msg.payload.Pack.Voltage, current: msg.payload.Pack.Current, power: msg.payload.Pack.Power, // msg.payload.Pack.Current *msg.payload.Pack.Voltage, SOC: msg.payload.Pack.SOC, cellDiv: msg.payload.Pack.Cell_Diff, remaining: msg.payload.Pack.Remaining_mAh, lowCell: msg.payload.Pack.Low_CellV, highCell: msg.payload.Pack.High_CellV, lowCellNr: msg.payload.Pack.Low_CellNr, highCellNr: msg.payload.Pack.High_CellNr, cellV_1: msg.payload.CellV.CellV_1, cellV_2: msg.payload.CellV.CellV_2, cellV_3: msg.payload.CellV.CellV_3, cellV_4: msg.payload.CellV.CellV_4, cellV_5: msg.payload.CellV.CellV_5, cellV_6: msg.payload.CellV.CellV_6, cellV_7: msg.payload.CellV.CellV_7, cellV_8: msg.payload.CellV.CellV_8, balance1: msg.payload.CellV.Balance_1, balance2: msg.payload.CellV.Balance_2, balance3: msg.payload.CellV.Balance_3, balance4: msg.payload.CellV.Balance_4, balance5: msg.payload.CellV.Balance_5, balance6: msg.payload.CellV.Balance_6, balance7: msg.payload.CellV.Balance_7, balance8: msg.payload.CellV.Balance_8 },{ name: msg.payload.Device.Name }] return msg;
@C4Ti0 9 місяців тому
greetings to Voltlog! 😋😘
@bascomnextion5639 9 місяців тому
You do not need the power supply there is 3.3 volts from the BMS on that blue tooth cable I am running a ESP 01 directly off it as a remote serial port. Note 48v 16s daly smart bms
@AndreasSpiess 9 місяців тому
I agree. Unfortunately, it was not strong enough for the high current peaks of the ESP8266. The documentation mentions that not all BMS supply enough current.
@ArnoldSzathmary 10 місяців тому
Interesting product. I know that the legal situation in Switzerland is different from that in the EU. As I live in the EU it would be interesting to know if distribution in the EU would be allowed. In the end, it's all a question of liability and law. That might also explain the low price.
@RFC3514 10 місяців тому
The price was low because it had a temporary 46% discount. It normally costs closer to 50 euros / dollars. But if you search a bit you'll find other sellers with a discount. Just make sure it's the right model, since it comes in several versions (different current and different battery capacity).
@AndreasSpiess 10 місяців тому
The prices on AliExpress changed after I made my video. But I found links on ebay for a reasonable price (I added it to the video description).
@FonsKnaapen 10 місяців тому
For me the UPS costs 54,55 euro and 34,55 euro for shipping. So 89,10 euro in total.
@EddyBlacks 10 місяців тому
Same here (NL)
@herrgeozeichen2344 10 місяців тому
Not even customs duties explain the high shipping price….
@vossie666 10 місяців тому
Same here
@RFC3514 10 місяців тому
Andreas' screenshots show it had a 46% discount when he bought it.
@RFC3514 10 місяців тому
@@herrgeozeichen2344 - China has apparently been cracking down on shipping of "insecure batteries" (maybe they had some catch fire in the post). They probably had to ship it through a different courier.
@StefanSchlott 10 місяців тому
The UPS immediately shot up in price: Now it's 50 € plus 34 € shipping to Germany.
@martingerhardsoos 10 місяців тому
Take other shop ...
@AndreasSpiess 10 місяців тому
The prices changed on AliExpress after I made my video. But I found links on eBay with reasonable prices (I put them in the description)
@j.f.christ8421 10 місяців тому
For a flux dispenser the K-2208 so worth considering. About the same price on Ali etc, has a ratcheting mechanism making removing the tube easier. A bit chunkier though.
@AndreasSpiess 10 місяців тому
Thank you for the info. I also saw it in Voltlog' s video after I made my video ;-)
@j.f.christ8421 10 місяців тому
@@AndreasSpiess Popped up as a recommendation after I purchased the "long bolt" type you've got here. Always the way. Prefer the screw type for glue (small & lighter), not sure about the K-2208 yet. Has spots to hold 3 tips in its body (neat) but one is too large for them. Odd.
@smak201 10 місяців тому
If you want to use ESP8266 or ESP32 instead of the Bluetooth dongle, wouldn’t it make sense to power it from the same 3.3V or 15V output from the BMS as the original dongle. That way you can be sure to use the same ground reference for the ESP and BMS, and you don’t need any extra components.
@AndreasSpiess 10 місяців тому
I agree and other versions of the Daly BMS seem to provide enough power for an ESP8266 (which consumes much more power than the BLE dongle). Mine did not provide enough current, unfortunately.
@martinesproduction 10 місяців тому
UPS: have you tested it for amperage and Ah? After seeing/trying multiple AliExpress battery based devices which were useless due to fake batteries, I decided to do my own UPS with an external battery. I also have 5V, 9V and two outputs for 12V plus 2 USB outputs (I didn't bother with POE, as modem and router is now connected to my UPS).
@AndreasSpiess 10 місяців тому
A quick test on 12V/1A gave 26.8Wh
@martinesproduction 10 місяців тому
@@AndreasSpiess Thanks Andreas for testing that and reporting results! It seems to be indeed a usable UPS for a short/mid-term electricity cut. BTW, I like your videos, especially as done by a local, thanks.
@muctop17 10 місяців тому
Have you measured idle power of the UPS? It is replacing the power plug of the device, so efficiency might be important! I got fooled first when measuring But it’s getting rather hot 😮
@muctop17 10 місяців тому
My UPS cost €36 in 09/22
@AndreasSpiess 10 місяців тому
It consumes 2.9W if fully charged without load. The device stays absolutely cool when I discharge 12V/1A
@bertdegenhartdrenth6282 10 місяців тому
I knew it! Left-handed too …
@AndreasSpiess 10 місяців тому
:-))
@silous8563 5 місяців тому
Hi, Thanks for your nice videos Do you have the flux reference ?
@AndreasSpiess 5 місяців тому
I just use a cheap flux from Aliexpress. Nothing special.
@molitovv 10 місяців тому
Might be nice to get some 3D files for that flux tool, they are easy 3d prints, and you just need the threaded rod/
@Knatte_Anka 10 місяців тому
check printables "Yet another flux Dispenser" its compareable
@AndreasSpiess 10 місяців тому
Keep in mind: It has to be quite sturdy...
@molitovv 10 місяців тому
@@AndreasSpiess Yes, I suppose you could redesign it to be stronger, which flux do you recommend?
@AndreasSpiess 10 місяців тому
@@molitovv I use a cheap one from AliExpress (Kingbro RMA-218)
@molitovv 10 місяців тому
@@AndreasSpiess Thank you, will order.
@klassichd10 10 місяців тому
Thank you for the interesting mailbag! Are you using PoE with 24V? I am using 48V, but 24V are more convenient. I am using liquid flux. It is very easy to apply. Your solution is a good hint for using solder paste.
@AndreasSpiess 10 місяців тому
48V PoE is different. It runs power and data on the same wires and enables Gbit connections. 24V PoE uses some wires exclusively for power and therefore only supports up to 100Mbit (I once made a video about it). The 5.8GHz antennas from Mikrotik and Ubiquity use the latter standard. As well as PoE cameras.
@klassichd10 10 місяців тому
@@AndreasSpiess Ah, Thank you, that is the reason. I hesitated using PoE until GBit capable units were affordable. So, I have 48V only. Bevore that time, I installed a 42V "hone line" in parallel with the LAN cables.
@ericbwertz 10 місяців тому
@@AndreasSpiess Interesting... I never heard of a 24V PoE "standard", only 48V.
@fibranijevidra 10 місяців тому
Hi Andreas. Did you tested that UPS with Raspberry? What is the exactly voltage at the 5V port? Thank you for the video.
@AndreasSpiess 10 місяців тому
No, I did not test it with the Raspberry because I use it for different purposes. The 5V voltage usually is a bit higher than 5V (my crappy setup caused a voltage below 5V)
@tigercat3864 10 місяців тому
Annnnnd the UPS deal is gone. Now it costs twice as much. Still, quite interesting to see all the stuff they put in there.
@AndreasSpiess 10 місяців тому
I added a few eBay links. It seems AliExpress changed the shipping fees for batteries.
@SB-qm5wg 10 місяців тому
I've been really interested in those small poe/ups devices but the price is still high.
@AndreasSpiess 10 місяців тому
Indeed, the prices went up in the last weeks since I made the video.
@heyt54 10 місяців тому
I can't see how you killed the BMS: if it turns off, the converter output would turn off as well, but there is no reference to the battery ground, according to the graphic. There is a small leakage current from the BMS to the converter, but I can't see the output line going up to 24V. Did you actually measure that? Even assuming the converter output negative would go up, the ESP again would stop working as it now sees 0V on it's input.
@AndreasSpiess 10 місяців тому
The input resistance of the attached buck converter pulled the voltage up :-(
@MSP_TechLab 10 місяців тому
Regarding UPS. It has overcurrent protection, so if your device requires high startup current it may be triggered. Also if you need to power router it is not mandatory to have specifically 9 or 12 volts ups. Most of the modern routers have dc-dc in inside. They can perfectly work with slighly lower or higher voltage (check ic spec). It was reported that for some models even 5v ok, because usually internal electronics is 3.3V.
@HiruS22 10 місяців тому
In fact I tried this experiment some time ago with my Dlink router. I dropped it in 0.1v steps from 12v and it finally cut out altogether at 7.4v, so it must have a voltage regulator which needs at least 7.5v
@AndreasSpiess 10 місяців тому
Good to know. Thanks for the info!
@john_hind 10 місяців тому
More pedantry, this time of an engineering nature (where pedantry is a virtue not a vice!): Is the first item definitely a true UPS rather than just a power bank? In my book to be a UPS it has to be able to supply the full load from the mains at the same time as charging its internal cells at the maximum charge rate. A typical power bank will either only charge the battery at a very slow rate when a load is connected, or will even disconnect the load whilst connected to the mains for charging, making it useless as a UPS.
@AndreasSpiess 10 місяців тому
It can charge while discharging. As you rightly mention: Most power banks cannot do this trick...
@fransvankralingen725 10 місяців тому
I do not understand - the uart connector of the DalyBmS carries 5 volt, as does the connector next to it - the rs485 connector - plenty to power an esp8266.
@AndreasSpiess 10 місяців тому
Some of these BMS versions provide enough current to power the ESP8266 (with its current peaks), and others do not. Mine did not work with the supply provided by the BMS. Another commenter had more luck...
@TheChemicalWorkshop 10 місяців тому
i want full video on the UPS
@AndreasSpiess 10 місяців тому
I am not sure if this would be interesting for many viewers...
@gerhardstein919 10 місяців тому
Wo ist das "CE" Zeichen, wie hoch ist die Spannungsfestigkeit zw. der Primär- (AC) und dem Sekundär- kreis (DC) 🤔🤔🤔. Oder spielt nachgewiesene "Sicherheit", keine Rolle mehr 🙃 .
@AndreasSpiess 10 місяців тому
Nachgewiesene Sicherheit spielt keine grosse Rolle mehr bei diesen günstigen Geräten. Da hast du recht!
@UnCoolDad 10 місяців тому
That flux extractor looks like something you could 3D print yourself. Just add a screw.
@bwselectronic 10 місяців тому
That was my first thought too
@AndreasSpiess 10 місяців тому
Maybe you can do that. However, it has to be quite strong.
@willb1242 10 місяців тому
Dumb question .. why are electric car batteries rated in kWh but small UPS battery rated in amp-hours?
@AndreasSpiess 10 місяців тому
I do not know. Wh is much better.
@fluffyblue4006 10 місяців тому
The manufacturer of this usb/5/9/12/'poe' UPS device boasts with 10400mAh while the cells are in series, which is not correct. This manufacturer therefore cannot be trusted and the device should be thoroughly inspected before putting it into service. Is there enough separation between the mains voltage and the low voltage areas on the PCB? Will it still run at a decent temperature when supplying rated power and charging the battery at the same time? And how much time is needed to charge, in that case? Are the Li-ion cells operated safely? Do all outputs have a common ground? Does it have good quality low-ESR caps in the regulators? I think, having all cells in parallel would have better value. A tinkerer could then easily extend the UPS runtime by attaching more 18650-cells to it. And this device will not do standard PoE as defined in IEEE 802.3af / 802.3at. The 12V/24V voltage selector switch gives that away.
@AndreasSpiess 10 місяців тому
I agree, a test of this UPS would be a good thing. I tested it on 12V/1A and it did not get warmer than ambient, also not after 1h. And of course, mAh is not a good measurement for a multi voltage power supply.
@KnaufL 10 місяців тому
Batteries are then in series and its 2.6Ah and not 10Ah
@AndreasSpiess 10 місяців тому
I agree!
@technicalsupport6983 10 місяців тому
Hello frend how to make long range 443 Hz telemetry transmitter and receiver .........
@AndreasSpiess 10 місяців тому
Maybe you google "LoRa 433MHz module" and select two of them where you can use "AT commands" (for example from DFrobots)
@thesimbon 10 місяців тому
I got a SVC ECO PLUS 8100 ups that can output 100W and it uses 14.4 Ah LiFePO4 batteries. Of course it costs more but I prefer the peace of mind of LFP batteries
@AndreasSpiess 10 місяців тому
Thanks for the info. I added it to the video description
@svetoslavlibelt7933 10 місяців тому
Wie kommen die Spinner auf 10400mAh wenn die Akkus nur 2600mAh haben? Unmöglich. Selbst wenn die Akkus parallel geschaltet sind, wovon ich ausgehe, wird man nicht annähernd die Kapazität erreichen. Ja, 4x2600mAh sind 10400mAh, aber ich glaube nicht, dass jemand in der Lage ist einen step-up Konverter zu bauen der in der Lage ist Verlustfrei die Spannung von 3,7v auf 5, 9, 12 oder 24v anzuheben.
@AndreasSpiess 10 місяців тому
Ich stimme dir zu. Wh wäre die richtige Einheit. Aber jetzt weisst du was drin ist...
@ReneKnuvers74rk 10 місяців тому
Non of the affiliate links work for me
@AndreasSpiess 10 місяців тому
Maybe you use an adblocker?
@ReneKnuvers74rk 10 місяців тому
@@AndreasSpiess oh yeah: pihole!
@AndreasSpiess 10 місяців тому
@@ReneKnuvers74rk Good for you, not good for me ;-)
@mcconkeyb 10 місяців тому
A low cost flux dispenser is very interesting. But what would be even more interesting is a source of good quality and low cost flux! I've been soldering for 40 years and the cost of both the solder and the especially the flux is getting quite ridiculous. 🙂
@AndreasSpiess 10 місяців тому
I use cheap AliExpress flux and it works. But I am not an expert in soldering...
@klauszinser 10 місяців тому
This seems the 1st part: ukposts.info/have/v-deo/rnyGiaRvb4WJ2Ww.html But the 1st product in this video was not touched in the other video.
@AndreasSpiess 10 місяців тому
Your link is correct. And you are right: The first product is part of this video, not the first episode.
@philip6382 10 місяців тому
Bitte denk mehr darüber nach wie diese Preise zustande kommen. Ich finde du machst gute Videos, jedoch werden diese Produkte nur so billig angeboten, weil andere Menschen dafür mit ihrem Leben bezahlen. Außerdem sollte man lieber die europäischen Lieferanten bevorzugen und ein paar Euro mehr zahlen. :)
@AndreasSpiess 10 місяців тому
Da kann sich jeder nach seinen Regeln verhalten.
@philip6382 10 місяців тому
@@AndreasSpiess Sicher, deswegen sage ich ja nicht du musst, sondern ich bitte dich darüber nachzudenken. Es gibt auch ein gutes Buch dazu es heißt die Kronzeugin. Dann weiß man was wirklich mit den Menschen in China passiert. Alles nicht böse gemeint, ich schaue gerne deine Videos, nur mal ein Denkanstoß, damit die Welt für unsere Kinder genauso gut erhalten bleibt.
@AndreasSpiess 10 місяців тому
@@philip6382 Auch ein Denkanstoss ist die Situation vor der Industrialisierung von China. Oder was im Moment mit den Mitarbeitern von Foxconn passiert die ihre Stelle verlieren. Keine einfachen Antworten...
@TheEmbeddedHobbyist 10 місяців тому
Why use flux when soldering? There is enough flux in the solder for the job they have been putting the right amounts in for years. If you buy cheap solder then you may need to add more cheap flux. I have worked in electronics since starting work in 1976, I can say that except for desoldering I've never needed to add flux. If you need to add flux then then something is wrong. Your pcb is dirty or oxidize, same goes with your components keep it all clean and your oily fingers off the pads and you should be fine. In the last 10 years I've bought one flux pen from Farnell no unknown stuff from overseas and I expect that its still 90% full. Adding excessive flux is one of my pet hates, it makes a mess of the pcb and the fumes are not good for your health. But if you feel the need to use it buy it from a electronic distributor so you can see what its made of and what protection you need to take from it.
@AndreasSpiess 10 місяців тому
I agree that solder contains flux ( I use Kester, BTW). Still, drag soldering of SMDs is a pain without adding flux. And desoldering anyway... And of course, I am not as experienced. So I need a bit help from flux.
@uvatham 10 місяців тому
Sir,why did you stop adding number from name of the video
@AndreasSpiess 10 місяців тому
I did not stop. Only the last about 10 videos do not get numbers...
@sanjikaneki6226 10 місяців тому
@@AndreasSpiess why did you not number those?
@AndreasSpiess 10 місяців тому
@@sanjikaneki6226 Because of the UKposts algorithm
@jstro-hobbytech 10 місяців тому
It's funny. I'm buying a 15k watt propane / gas generator. I looked into solar but being half my house blew away last Sept in a hurricane I'll save money (up front not over time) the few times a year my house loses power. My collection of leds and 18650s got us through last time but it was horrible. I plan to buy a giant propane tank and just run the essentials.
@AndreasSpiess 10 місяців тому
Your situation seems to be very different to mine (we luckily have no hurricanes). So your solution has to be differet!
@jstro-hobbytech 10 місяців тому
@@AndreasSpiess which sucks because my roof gets sun literally from dawn til dusk Mr. Spies. Same with one side of the roof on my 10x20m detached garage. It used to be a cabinet makers workshop. I plan to get deeper into woodworking so it'll get more use than changing tires. I installed central air from a compressor that fills when one of the outlets is connected. It's funny. The airhose cost more than the compressor. It has a wood furnace that heats the place in minutes if I ever wanted to use it in the winter and the wife insists on using wood as our main heat supply in the house. It barely heats our living room and kitchen but the cats like it. I divorced myself from it years ago because my wife is neurotic about when it should and shouldn't be lit so I invoke the happy wife, happy life relationship topology. Hahaha
@MarcelHuguenin 10 місяців тому
When I pulled up the listing for the portable mini ups, the selling price was listed as €57,57 with a shipping cost of €34,58 to The Netherlands, so I'm wondering what's going on here ... 😱
@AndreasSpiess 10 місяців тому
Indeed, shipping costs went up recently. This is why I added ebay links where shipping cost was still reasonable
@MarcelHuguenin 10 місяців тому
@@AndreasSpiess Fortunately I don't need one now but it wasn't just the shipping cost ($8,75 to €34) but to price itself went up from $27 to €57, that's more than doubled up. You're just too good of a salesman Adreas 🤣 Thank you, your videos are always interesting!
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