#383
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День томуAdding cheap and simple solar power to our small outdoor projects (e.g. ESP32, ESP8266, Arduino Pro Mini) removes the need to save energy or recharge batteries. Today we will enhance a simple 50 cents Li-Ion charger board to do exactly that.
I am a proud Patreon of @GreatScott!, @ElectroBOOM , @Electronoobs , @EEVblog , and others. No Docker, No Microsoft Teams, Zoom
Links:
TP4056 boards: s.click.aliexpress.com/e/_ATFwwH or amzn.to/2RqelKK or bit.ly/3eMmZw5
ESP32 WROOM : s.click.aliexpress.com/e/_DdX... or amzn.to/3rFVvBc
ESP32 PCB (different color) : s.click.aliexpress.com/e/_ABYXuD
Solar panel 6V : s.click.aliexpress.com/e/_9xQ3CD
Solar Panels 5 - 5.5V : s.click.aliexpress.com/e/_AfVbIz
Voltage Regulator HT7333 : s.click.aliexpress.com/e/_ADLhEl
Schottky Diodes (used 1N5819) : s.click.aliexpress.com/e/_AXOsKv
FQP27P06 : s.click.aliexpress.com/e/_A5T7oh
Explanation of Power Path: • Load Sharing for the 1...
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@davidkempton2894 2 роки тому
Thanks for another interesting video. (BTW it's "Houston" 😊👍 )
@AndreasSpiess 2 роки тому
Thanks for the correction! My mistake. I pinned your comment that everybody can see it...
@largepimping 2 роки тому
@@AndreasSpiess It's OK, I just thought you were talking about John Huston 😊 (except he died in 1987)
@kevinwalters5160 2 роки тому
More Houston confusion: ukposts.info/have/v-deo/ZYJ5paKDiq-nrqs.html
@michaels3003 2 роки тому
@@kevinwalters5160 , well they never said exactly what he quoted, but it is a widely spread myth that is not going away. The sentence was "Houston, we've had a problem." This maybe was not the best way to say it, but this is what the Apollo 13 astronaut said after they were able to communicate with the mission control center again.
@klausbrinck2137 2 роки тому
In "schwiizerdütsch" (Switzerland dialect of german) it was already correct as "Huston"... ;-)
@user-yo4re5eb9y Рік тому
*I love my new solar **Generater.Systems** . It has the right amount of charging power for my needs and the light weight makes the portability idea.*
@AndreasSpiess Рік тому
I like the solar panels more.
@MoritzvonSchweinitz 2 роки тому
Trivia about that Indiana Jones scene: the plan in the script was actually to have a normal "epic fight scene", but Harrison Ford was sick that day, so he recommended just shooting the guy.
@AndreasSpiess 2 роки тому
Thanks for the additional info. I did not know he was ill. But I took this scene because I expected a long and difficult fighting scene. Like resoldering the small SMD component...
@stephenkeebler732 2 роки тому
Ford was running a fever between 40-41c and could barely stand up...
@hansdegroot652 2 роки тому
@@stephenkeebler732 Ha. I never knew that. Alway thought it a brilliant scene. Maybe it is even better now :-) And than you learn that after 43 years on a channel from a guy with a Swiss accent :-)
@Davvg 2 роки тому
Sometimes what you cover is so in line with what I’ve been thinking about that it’s like you’re reading my mind.
@AndreasSpiess 2 роки тому
:-) Glad it helps.
@juncusbufonius 2 роки тому
Darn I have my charging boards, now I have to get FETs and some smd caps. You and your making things better. Excellent
@AndreasSpiess 2 роки тому
Search for FETs with a low Vgs voltage.
@Davidmc23 Рік тому
I really appreciate the thought and care you put into your work. Very approachable and always informative.
@AndreasSpiess Рік тому
Thank you for your kind words!
@erikpeterson1989 2 роки тому
I enjoyed this very much! I really appreciate your layered approach to the project, getting the core design together, then looking at further edge cases! This great both for storytelling and for design! Lieber Grüße aus momentan sonnig Seattle
@AndreasSpiess 2 роки тому
Glad you liked the approach! Here the weather is very bad for the season :-(
@das250250 2 роки тому
Excellent summary of the design and well thought out use of common ,cheap parts to bolt on to any project. Well done Andreas
@AndreasSpiess 2 роки тому
Thank you!
@McTroyd 2 роки тому
Love that power path circuit! It seems so obvious in hindsight.
@AndreasSpiess 2 роки тому
Indeed, it is an elegant solution. Not invented by me ;-)
@MilenHristov 2 роки тому
Wow! Thanks for the tip about the diode and p-fet. This is exactly what I need for my current solar project!
@opensiembro7331 2 роки тому
Same.
@AndreasSpiess 2 роки тому
I am glad it was helpful!
@arunrajalegend 2 роки тому
@@AndreasSpiess Thanks, this was very helpful video, as we were trying to solve this issue for weeks. one problem i had is, after deep discharge my controller board is not wakes up even there is sun (for whole day). will this solution solves that issue without any external trigger to reset the board or with other components ?!
@allsmart1441 2 роки тому
@@arunrajalegendI have the same problem, have you had a chance to try it, can you share the results?
@SmithyScotland 2 роки тому
I was just waiting for the "we want more!"
@AndreasSpiess 2 роки тому
You are the first mentioning the sentence!
@dennis8196 2 роки тому
@@AndreasSpiess We all wait for BigClive to say 'one moment please' and Great Scott to say 'lets get started' everyone gets upset when it doesn't get said. Little details are important to us makers.
@sebastienl2140 2 роки тому
i just waiting for a "we want less!" solution : lifepo4 (3.0V -> 3.5V supply for esp), mosfet switching the solar to the battery and regulation made in software! Sleep timer near 3.0V
@dennis8196 2 роки тому
@@sebastienl2140 careful now, that line only comes once every 8-12 videos
@j.a.seabrook2676 2 роки тому
@@dennis8196 Ha ha so true I watch those two gents also.
@BlueyMcPhluey 2 роки тому
Great video. A lot of the concepts here around lipo batteries and charging were new to me so I had to go off and do a lot of research, but now I have some context I can appreciate the value you have provided
@AndreasSpiess 2 роки тому
Welcome on board of the channel! Glad you like the content!
@rarenu 2 роки тому
Thank you for this very useful project. You made the already smart ESP32 to a more versatile one by powering it with your smart renewable energy power supply.
@AndreasSpiess 2 роки тому
Glad it was helpful!
@catcam 2 роки тому
Thanks dear Andreas for great, useful and calming content.
@AndreasSpiess 2 роки тому
You are welcome!
@jdsan6009 2 роки тому
Really good explanation. As a tip from experience: Lion batteries hate heat, and if they are exposed fully charged to high temperatures (say over 60°C) they can swell and leak over time. If your unit is assembled inside a small container, exposed to direct sunshine, it is not rare to reach those temperatures. To mitigate this, keep maximum charging at 80%. Also, if the charger/battery has NTC (temp sensor) it can stop charging over 45°C.
@AndreasSpiess 2 роки тому
Good point. I measured temperature and, in summer it reached 65 degrees for a few hours. So far I had no casualties. But I expect the battery will not live too long. Charging up to only 80% is not easy with the standard chips. Because of the power path, the battery is not used nor charged during these high temperatures and is only "stored". Which seems to be ok.
@jdsan6009 2 роки тому
@@AndreasSpiess you are correct. Is always good to be aware of batteries limitations and that is a huge topic. Keep with your great channel, which is personally one of the best in UKposts!
@whatsupbudbud 3 місяці тому
This is an interesting point since batteries don't like charging in negative temperatures as well due to dendrites. So how to best solve this very hot/very cold environment issue with solar charging these small boards?
@cwa_nylis 2 місяці тому
Fun fact: TP4056 has NTC pin, just in these tiny chargers it's not utilised, just pulled to ground.
@SanthoshLakshmanan92 2 роки тому
Thank you very much @Andreas. I'm working on a wireless project powered by solar. I was stuck on making a powerpath with TP4056, having completed the prototype for the rest of the system. Thank you for the "we want more" section, and explaining the working. Cheers..
@AndreasSpiess 2 роки тому
Glad it was helpful!
@RobSummers993 2 роки тому
As always, another great video! Thank you! I will be using this tech in my garden this summer!
@AndreasSpiess 2 роки тому
Glad it is helpful for your project!
@vivekchauhan7468 2 роки тому
I love the power path. Thanks
@AndreasSpiess 2 роки тому
Me too ;-)
@__3093 2 роки тому
I've never enjoyed youtube videos as much as I enjoy yours
@AndreasSpiess 2 роки тому
Thank you!
@zachreyhelmberger894 2 роки тому
WONDERFUL!! And the timing is perfect! We are just starting out making solar remote dataloggers for measuring the water level in our cisterns (we live in a 650 acre earthship community and get our drinking water from the rain and snow that lands on the roof).
@AndreasSpiess 2 роки тому
Sounds like a perfect fit!
@herrgerd1684 2 роки тому
Thanks for showing that P channel MOSFET hack. I knew sth like this was used in "zero power off" toggle circuits... But here it is an excellent addition, too!!!
@AndreasSpiess 2 роки тому
Indeed, this is a very elegant solution.
@vineetwilson5277 2 роки тому
for a small project I did, using esp32, I also changed the R3 resistor (on the TP4056 board) to a more suitable 3.9K SMD resistor, which worked great for the purpose. Thanks for the great video by the way :D
@AndreasSpiess 2 роки тому
You are right. You can add also a fixed resistor. And the older boards had bigger SMDs...
@vineetwilson5277 2 роки тому
@@AndreasSpiess yaa, mine had the 0603 ones which are okay to replace if you have an okay eyesight :p P.S. - i also added the ldo and powerpath to my project, didn't know i had become professional too... XD
@newburypi 2 роки тому
Thank you (yet again) for a clear and informative video. In the past I've started a number of solar projects, but always run into constraints that seem to require expensive solutions. With the information from your video, I will attempt to revive some of them. I may even try to implement them in surface mount technology. I'll let you know if I can fully incorporate your beautiful bodge onto a single board :)
@AndreasSpiess 2 роки тому
The FET I used for sure was too big! You can use a DMP1045u instead.
@johnpipe362 2 роки тому
Thanks. You just beautifully covered another future project of mine. Time to get testing!
@AndreasSpiess 2 роки тому
Enjoy!
@joshportelli 2 роки тому
Great video, content, and delivery. Also love the little hand to point at things!
@AndreasSpiess 2 роки тому
Thank you! Yes, the little hand seem to have a lot of fans ;-)
@user-fy8dz7cy7l 2 роки тому
I just think about what you do today. wow!
@AndreasSpiess 2 роки тому
Good idea!
@TheChopain 2 роки тому
Thank you for a great video! In my projects i also add a temperature sensor and a mosfet to cut off the battery charging if the temperature is too low or too high (charging lithium batteries bellow 0C can causes permanent damage). Alternatively the tp4056 has a pin where one can connect a thermistor. Also if you use lifepo4 not only you don't need the regulator you also don't need the voltage divider to measure voltage. One can use ESP.getVcc() directly. And as a bonus no risk of blowing up 🤯.
@noddlexxx9161 Рік тому
wow do you have any guide I can view so I can implement what you did? I want to incorporate it that into my mini electronics project.
@TheChopain Рік тому
@@noddlexxx9161 Sorry i got no guide but it is pretty simple. Whenever the ESP wakes from deepsleep (15 mins) I measure the temperature and depending on the result turn the mosfet between charging board and battery on or off. The project is now running something over 2 years without any manual charging needed.
@noddlexxx9161 Рік тому
@@TheChopain oh okay thank you. I'm panning to make like a little backup cam for my car and it would be pretty annoying to switch out the battery you know.
@ZpeedTube 9 місяців тому
@@noddlexxx9161why not take the power directly from the car? Of course have to step voltage down first, but would not need to have a separate battery.
@bubbaganoosh1387 10 днів тому
How did you keep the TP4056 off during deep sleep?
@zachreyhelmberger894 Місяць тому
FANTASTIC!!! Thank you for the R&D that went into this!
@AndreasSpiess Місяць тому
My pleasure!
@foxyredsheri 8 місяців тому
AMAZING! I AM OBSESSED! THANK YOU! ❤
@AndreasSpiess 8 місяців тому
Glad you like it!
@vks002 2 роки тому
Yet another brilliant video from you! Thank you so much for such "useful AND interesting" one ! The clarity, detail and practicality in your work is not something that many others can match ! Thanks again. Can you please answer a question about the FET you used - the one you mentioned isn't available here, can you tell what should be the parameters of this FET so that I can choose another one.
@AndreasSpiess 2 роки тому
You need a P-channel FET with low Vgs voltage (DMP1045u is also good)
@auronedgevicks7739 Рік тому
Alternatively, especially if you're more application engineer.. just use the 5v (or USB in) on the ESP32. You will need something like "PFM 600MA Control DC-DC Converter Step Up Boost Module" between the TP4056 battery out and your ESP32. This will boost the signal to a consistent 5V and you can connect that to your board through the USB in. I also highly recommend getting an 18650 with a protection circuit for additional protection. For battery monitor also consider a "I2C 3.7V Li Battery Fuel Gauge" which you can connect to the I2C on the ESP32
@AndreasSpiess Рік тому
This is a good idea if you are. Ot concerned about power consumption.
@avrphreak9121 2 роки тому
Excellent stuff! Always enjoying your videos, and learning along the way!
@AndreasSpiess 2 роки тому
Much appreciated!
@antiquarian1773 Рік тому
Love the energy calculation! helps out very much!
@AndreasSpiess Рік тому
Glad it was helpful!
@dorukbu3133 2 роки тому
Yet another great video from Andreas. Thanks! I wonder if it is possible to control TP4056 current setting from the ESP32 instead of using a manual pot. With a DAC maybe ?
@AndreasSpiess 2 роки тому
You can get electronic potentiometers. But, as said, it is not worth the effort for such small panels.
@JensHeuschkel 2 роки тому
Maybe we should design a board with your proposed modifications (and a 3.3V regulator) and manufacture it with a PCBA service. I guess many people here in the community would take one or two :)
@AndreasSpiess 2 роки тому
Let's hope somebody will do it...
@squelchstuff 2 роки тому
Excellent Andreas. It seems this came just in time for many of us thinking about solar powered projects. Greetings from sunny-ish UK
@AndreasSpiess 2 роки тому
Very good, that you have a sunny day! Here I had to wait for quite some time to film outdoors. It is mostly wet these days...
@davidkempton2894 2 роки тому
@@AndreasSpiess It's mainly wet in the UK too during this month.
@yuvarajvelumani7760 2 роки тому
I was looking for such a solution for my overhead water tank. Thank you so much.
@AndreasSpiess 2 роки тому
Happy to help
@rr974 2 роки тому
Thanks for your video. I was just doing my own research for solar powered ESPs recently and ended up with the TP4056 as the simplest solution as well. But ... there's no point in fiddling with the charging current of the TP4056. The current of solar cells is proportional to the solar radiation and thus is always varying between zero and the maximum current. Your current setting will never be right. But that's not as bad as it sounds. You just want the maximum available current and that's what you get without limiting the TP4056. Chasing the MPP only makes sense with a swtiching charge controller that can transfer energy between different voltage levels.
@AndreasSpiess 2 роки тому
I agree, we never will find the right current without MPPT. The problem I had was that the panel hardly delivered current when the battery voltage was very low. Then, the TP4056 tried to draw max current and pulled the solar panel to a very bad place on its curve. This is what I wanted to avoid. If you have enough sun and your battery voltage is ok you will not encounter this issue.
@rr974 2 роки тому
@@AndreasSpiess Thanks for your reply. Are you sure it was not just the Trickle Charge Mode of the TP4056 for a very low battery voltage? The current-voltage diagram can't explain what you observed. For a solar cell the current can only get higher for lower voltages. The power might decrease but the current is constantly increasing for lower voltages.
@wasserdrucker6227 2 роки тому
That was also my thought. The higher power of the PV results in voltage, not current, but the higher voltage is burned anyway by the charge controller. Concidering the charge controller does not consume current, only burns the voltage above 4,2V, but we charge a battery that has 4V at the moment, you will get more power to the battery when operating the PV with 4 V, then operating it at its MPP at 5V: voltage current power power at battery with 4V 0 0.098 0 0.5 0.097 0.0485 1 0.096 0.096 1.5 0.095 0.1425 2 0.094 0.188 2.5 0.093 0.2325 3 0.092 0.276 3.5 0.091 0.3185 4 0.09 0.36 0.36 4.5 0.089 0.4005 0.356 5 0.085 0.425 0.34 5.5 0.07 0.385 0.28 6 0.03 0.18 0.12 6.5 0 0 0
@r5bc 2 роки тому
Sir your channel is one of the best channels on UKposts, providing educative and valuable content, please keep up the good work, YOU ARE DOING A FAVOR TO HUMANITY.
@AndreasSpiess 2 роки тому
Thank you for your nice words!
@SteveJones172pilot 2 роки тому
Glad I stumbled upon this video.. Definitely subscribed!! I'm more of a programmer with a little digital electronics experience - This analog stuff is the hard part for me, but this was so well explained, maybe now I can get all these half-built projects back in motion.
@AndreasSpiess 2 роки тому
Welcome aboard! I am sure you will learn "analog stuff" if you are interested...
@mahudson3547 2 роки тому
Good video. Damn, it arrived a week after I had used an identical circuit with 2 Schottky diodes and missed the pro solution. Still, mine looks nicer! Next time…
@AndreasSpiess 2 роки тому
I can imagine that the two diodes look better! And the difference is probably not big for this application where we never want to deplete the battery.
@joanantonllarchpoyo2837 2 роки тому
The MCP73871 is a complete solar charger with all the bells and whistles needed in your project Andreas... Adafruit has a board with it.
@Cptnbond 2 роки тому
This is an old board design, at a whopping price of $17.50 + shipping. Adafruit recommends the new board with BQ24074 - cheaper - but out of stock, so Andreas tips is the hackers way of doing it. Have a nice day. ;-)
@joanantonllarchpoyo2837 2 роки тому
@@Cptnbond Yes....we can go down down to build it with simple transistors...nice learning too. :)
@AndreasSpiess 2 роки тому
You are right. These chips seem to have all parts on board. Boards with this chips are not so widely available.
@joanantonllarchpoyo2837 2 роки тому
I've seen at mouser that the MCP73871 cost € 1.59 for € 1.85 for the new BQ24074. The price difference for the two Adafruit boards is only explained for commercial reasons ... nothing to do with the board bom. I have been using the MCP73871 for years and it is possible to solder it by hand with a fine welding tip (the BQ24074 footprint looks similar).
@grindel80 2 роки тому
is there a cheap chinese version of it?
@florinadrian4434 2 роки тому
This video arrived at the perfect time for my project. Thank you.
@AndreasSpiess 2 роки тому
Glad I could help!
@TomLeg 2 роки тому
Lovely view of the hills, at the end!
@AndreasSpiess 2 роки тому
Thank you! It was a nice day when I did my tests...
@klausbrinck2137 2 роки тому
6:40 "Never bring an smT-component to an smD-component-fight..."
@AndreasSpiess 2 роки тому
:-))
@joey199412 2 роки тому
I would appreciate it if you would add in the amount it cost you at the time to build the total package. I know I can calculate it myself by opening all the aliexpress links and tallying them up but it won't reveal how much you personally paid for the package at the time of making the video.
@andrewkieran8942 2 роки тому
Having watched Andreas' old mailbag videos, I expect that all of these parts came from his inventory so no new purchases were needed.
@AndreasSpiess 2 роки тому
Andrew is right. I assume the total cost was around 10 dollars including the battery and the solar panel. Plus 1000 dollars work of a Swiss engineer ;-)
@tonybell1597 2 роки тому
Thanks Andreas, I’ve been struggling using a tp4056 for a solar project, reckon this is the solution! Perfect…
@AndreasSpiess 2 роки тому
I hope it will work for you as well.
@jost459 2 роки тому
What was your problem? To small solar panel? To high charging current?
@buzhug35 2 роки тому
Useful as always, dear Andreas! I have to create a system for ventilation of a greenhouse. And that will certainly help me! Thanks for your job! Best regards. Jean-Michel
@AndreasSpiess 2 роки тому
Glad it was helpful!
@Giblet535 2 роки тому
Very nice tutorial. The only thing I do differently, I use a 3.3V buck-boost instead of a regulator. I have an ESP8266 that is more than a kilometer from my house, and it has been running m/l continuously for over a year. The battery doesn't do well below 0C... I recommend using the solar panel to shade the other parts from the sun, and mount the parts to an aluminum bar that extends outside the weatherproof enclosure. The bar will remove heat from the enclosure.
@AndreasSpiess 2 роки тому
Good idea with the shading. I have a few IKEA boxes to try and compare different cooling concepts. I just have to do it...
@madrian_hello 2 роки тому
Andreas what is the status of Super Power project?
@AndreasSpiess 2 роки тому
They are testing the prototypes and found some errors. Firmware for the Pi board seems in a good shape.
@madrian_hello 2 роки тому
@@AndreasSpiess very good news, thank you. 👍
@grindel80 2 роки тому
@@AndreasSpiess Very nice!!
@YusufBAYLAV 2 роки тому
Thanks Andreas, it is a great idea to convert my esp projects as I am living in Turkey, by the Aegean sea.
@AndreasSpiess 2 роки тому
So for sure you only need a small solar panel ;-)
@sebydocky5080 2 роки тому
Thanks for this great video. For all my sun powered project, I am using the mppt charger/balancer PS-BC12111 also including a bay for 3 x 18650.... Works flawless.... and cheap.
@AndreasSpiess 2 роки тому
This would probably be an overkill. And I am not sure how much of the energy would be used by the charger board itself... But for larger panels a more elaborated board like the PS-BC12111 is needed
@Peeki 2 роки тому
Nice, do you know of any 2S boards?
@Dralsoft 2 роки тому
Does anyone have a Fritzing diagram for the p mosfet and diode components? I quite don't get it :(
@AndreasSpiess 2 роки тому
I do not use Fritzing :-( Maybe somebody else...
@mars667 2 роки тому
Excellent and timely, as always. Thanks!
@AndreasSpiess 2 роки тому
You are welcome!
@gaborungvari784 2 роки тому
Thanks a lot Andreas for this very useful video! Useful and interesting, as always!!!
@AndreasSpiess 2 роки тому
I am glad you liked it!
@GABC2007 2 роки тому
Thanks dear Andreas 🤗🤗
@AndreasSpiess 2 роки тому
You are welcome!
@electrobobuddy6355 2 роки тому
Hands off your knowledge 🙏 sir. Keep delevering , it really helps us. Lots of Love form "India"❤️
@AndreasSpiess 2 роки тому
Thank you for your nice words!
@MikeNugget 2 роки тому
I was waiting for this video! Thanks) Will be interesting to see solar equipment for RPi 4 😎
@AndreasSpiess 2 роки тому
They are still testing...
@beautifulsmall 2 роки тому
Great video, something I've wanted to do for ages. Very clear explanation.
@AndreasSpiess 2 роки тому
Glad it was helpful!
@ElectroCreativity 2 роки тому
Thanks for such a simple tutorial
@AndreasSpiess 2 роки тому
My pleasure 😊
@malou8484 2 роки тому
Houston, Andreas solved the problem ! Thaank you.
@AndreasSpiess 2 роки тому
:-)) Thank you!
@MrAbrandao 2 роки тому
Beautiful lesson!! I always learn a lot with your work. Sun is done. Now I look for a 200mA wind generator
@AndreasSpiess 2 роки тому
Good luck! Fortunately, we do not have a lot of wind here. So I cannot help you.
@Scrogan 2 роки тому
I’d like to see your take on other energy harvesting methods, like rectennas. Ooh and that PFET circuit is wonderfully elegant. And 90mV dropout on that LDO is excellent!
@AndreasSpiess 2 роки тому
I once did a video about harvester. It is only for very special applications and you have to use very low power chips...
@rogeriolisto 2 роки тому
Perfect timing. Thank
@AndreasSpiess 2 роки тому
You are welcome!
@acopernic 2 роки тому
Exactly what i'm doing.. Bravo!!!!!!!
@AndreasSpiess 2 роки тому
Glad you can confirm it is a good idea.
@acopernic 2 роки тому
@@AndreasSpiess well done. As usual a brillant demonstration.
@JohnAshleyMckenzie 10 місяців тому
The voltage input for the analog input on the raw 8266 is 1v but on the Wemos Mini and other Node MCU boards is 3.3V. Love the video! I learn so much from you thank you!
@AndreasSpiess 10 місяців тому
Yes, you are right.
@keithroberts5946 2 роки тому
Very interesting - always great ideas and videos Thank you for sharing
@AndreasSpiess 2 роки тому
You are welcome!
@ktestable 2 роки тому
oh my, wow! this part 11:56 is the solution to my problem of diy ups. Thanks a lot
@AndreasSpiess 2 роки тому
You are welcome!
@MartinPDanz 2 роки тому
Simple and efficient approach. Thanks. Maybe we should use this approach more often.
@AndreasSpiess 2 роки тому
Absolutely! The film is old and still not fully understood ;-)
@JEXUSWAT 2 місяці тому
Thank you for the knowledge shared. you earned a new subscriber.
@AndreasSpiess 2 місяці тому
Welcome aboard the channel!
@stasstas206 2 роки тому
Thank Andreas, your lessons are very interesting and kinde of relaxing ))
@AndreasSpiess 2 роки тому
Glad to hear that! Thanks.
@tchrig Рік тому
Excellent video, thank you. Simple and professional! It is what I need. BTW I also need turn-off the load at night. So I can use the solar panel voltage, or the lack of them, to turn off the load. I need the battery only to supply instant current on LoRa transmit or similar.
@AndreasSpiess Рік тому
Good idea!
@jackdaniels8898 2 роки тому
Excellent. Thank you!
@AndreasSpiess 2 роки тому
You are welcome!
@TheUnofficialMaker 2 роки тому
great engineering, love it
@AndreasSpiess 2 роки тому
Thank you!
@uribass7733 2 роки тому
Thank you!! Very helpful!
@AndreasSpiess 2 роки тому
You're welcome!
@distancelab2010 2 роки тому
Thank you so much. Very interesting, and informative.
@AndreasSpiess 2 роки тому
You are welcome!
@LarryKapp1 2 роки тому
I have over 6 KW of pv and 13kwh of battery here at my place. I like your simple setup and how you are using those tiny PV and battery - it sure takes up a lot less space than what I have !
@AndreasSpiess 2 роки тому
But it would be too small to charge your Tesla ;-)
@calvinbrowne2126 2 роки тому
Nice one! Thank you!
@AndreasSpiess 2 роки тому
You are welcome!
@ruudb72 2 роки тому
Thanks Andreas! Very good explained and very usefull.
@AndreasSpiess 2 роки тому
Glad you liked it!
@johncaipa 2 роки тому
Excelent video as always.
@AndreasSpiess 2 роки тому
Thank you!
@jjanevski Рік тому
Really nice and informative video. Thanks for making this. 👍
@AndreasSpiess Рік тому
Glad you liked it!
@inlywang8157 2 роки тому
very useful and good solar project, talented man👍👍👍
@AndreasSpiess 2 роки тому
Thank you!
@danielbatista8760 Рік тому
Thank you for the videos
@AndreasSpiess Рік тому
You are welcome!
@mariabarbarasalinasluna4808 2 роки тому
Thanks Andreas, excellent explanation :)
@AndreasSpiess 2 роки тому
You are welcome!
@matheo4934 4 місяці тому
I love it so much. Thanks
@AndreasSpiess 4 місяці тому
You're welcome 😊
@emilalmberg1096 2 роки тому
Wow, you're really thinking, smart!
@AndreasSpiess 2 роки тому
Thank you!
@meetpatel5142 Рік тому
love the location you lived at
@AndreasSpiess Рік тому
Thank you!
@Jose-tw9bl 2 роки тому
Interesting as allways!!
@AndreasSpiess 2 роки тому
Glad you think so!
@jackdaniels8898 2 роки тому
Excellent. Thank you
@AndreasSpiess 2 роки тому
You are welcome!
@leandroga20 2 роки тому
Amazing video. I tried to think something like this. Thanks!
@AndreasSpiess 2 роки тому
Glad you like it!
@joamarticorena9018 2 роки тому
Fantastic!
@AndreasSpiess 2 роки тому
Glad you like it!
@ariel18012 2 роки тому
Muchas gracias amigo, excelente, ojala puedas perfeccionar este proyecto y convertirlo en una mini UPS.
@AndreasSpiess 2 роки тому
It probably already can be used as an UPS for an ESPxx
@JPMeijers 2 роки тому
Excellent. Thanks for this Andreas. I've been struggling to add an E-peas solar charging chip to my lora board. It does mppt, but it doesn't seem like I'm winning much. It's very complicated and expensive. I think I'm rather going to use the design you show in this video.
@AndreasSpiess 2 роки тому
My tests also showed that MPPT does not help with these low power panels. For you own PCB you might also have a look at the bq24074 or similar ( www.ti.com/lit/ds/symlink/bq24074.pdf?ts=1621319840198&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ24074 ). It seems to have a built-in power path.
@rxmas7234 2 роки тому
@@AndreasSpiess Thank you for this. I've been trying to find this for months!
@ounsspace2573 2 роки тому
wow ..awsome👍
@AndreasSpiess 2 роки тому
Thanks 🤗
@fleetinglife2984 2 роки тому
i will add the power path，nicework
@AndreasSpiess 2 роки тому
Thank you!
@andymouse 2 роки тому
Very nice solution...cheers.
@AndreasSpiess 2 роки тому
:-)
@edivollgas719 2 роки тому
Thank You, great inspiration as every video on Your channel. Two alternative aproach come to my mind ..... - using ttgo t display as it has charging circuit and I love the display on all esp projects.from video366. - using the 18650 power bank "shield" offered from various sources.from video351. both not so much hacked but will check what happens connecting to solar cell...... Regards from Bavaria
@AndreasSpiess 2 роки тому
You are right. There are many other possibilities. This one was very simple and cheap, I thought.
@PhG1961 2 роки тому
Very usefull indeed and nicely explained. Pure entertainment on Sunday mornings. What else....
@AndreasSpiess 2 роки тому
Thank you! Currently, they do not produce a lot of energy. We have bad weather :-(
@PhG1961 2 роки тому
@@AndreasSpiess Too bad of the weather. Here in Belgium it's reasonable... thanks to global warming and climate change the summers are getting warmer and sunnyer ;-). I'm thinking of buying a few of those solar cells. Also 2nd hand panels with more power are interesting these days.
@lamrikanwiwatman9192 Рік тому
Thanks!
@AndreasSpiess Рік тому
You are welcome!
@tinygriffy 2 роки тому
Very nice !! Thanks !
@AndreasSpiess 2 роки тому
Glad you like it!
@tinygriffy 2 роки тому
@@AndreasSpiess Yes, i think it is a simple and smart solution :) That's a little bit off topic : I think I have read something about Silica Gel getting conductive if it absorbs enough water, but I don't know _how_ conductive, and if it would influence the circuit that's sitting on it. Also Silica and Battery Electrolytes don't mix well I think. This maybe something to further investigate. (If the stuff on the bottom of the clip on lid plastic container is indeed Silica.) A solution to keep such a small container moist free might be an Solid State dehumidifier. (Clive made a Video about it v=Vabq-s62IVM)
@AndreasSpiess 2 роки тому
It is Silica and I added it a few weeks ago. I will see how it performs...
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