You are my king! Every video is about things I like and questions i have without me asking, Thank you!

I just want to say hello from Vancouver, BC . I want to deeply thank you for making these videos. I love playing with electronics and also want to teach my young kids. I have learned SO much from your videos in such a short period of time. Your videos are very well produced and super detailed. Thank you again. Tom from Vancouver, BC

This is my favourite video so far. I love your enthusiasm. Keep making more of these great videos please.

Thanks for another interesting video. Excellent close up camera work, always in focus and with good lighting. I look forward to your video posts and enjoy hearing the detailed technical explanations. I am pleased to support your channel.

Hi Andreas, as always thanks for sharing. It's good timing as the other day I ordered a few wemos minis and a few shields, looking forward to working with them

Another amazing Swiss-ly accurate, informative, and entertaining video.Well done, Andreas!

Loved the switch between clock and temperature sensor.

Got me hooked. Ordered some before your video was over. Thanks for the review.

Great video. I purchased a kit with most of those shields for my dad for Christmas. Thanks for the excellent overview.

Thanks for the compatibility table, saved me lots of time. Don't forget that these shields are breadboard friendly which is always useful :)

Awesome overview, I really starting to love these boards!

I used to absolutely HATE dupont connectors, but then I ordered the crimping tool you recommended, and voila! Dupont connectors are now my go-to solution for most things, including things where I want to be able to replace thru-hole LEDs without soldering. So, for that (too!): thanks a lot!

1:51 "A female with long legs which can be used as a male on the other side" Great quote

WOW. WOW. WOW. SPOT ON!!!! Sorry for shouting but your content, production and delivery in this video is your best to date. Amazing video Andreas.

Great video, as always!

I have several Wemos d1 mini and pro and some shields. They are great and using them are straight forward. Good video!

Nice video once more! I like all the references you give and also like to see how your various videos tie together. Wish you all the best and much success and happiness in the new year! Some ideas for new prototype shields: 1. use dipswitches or jumperpins to select pin connections for more compactness (you only need to select non-conflicting pins). 2. make an audio shield containing a buzzer and/or loudspeaker, using jumper pins to select buzzer or speaker connector. 3. make an i2c multi-i/o shield using the pcf8274 for having more pins (cheap pcfs can be found on the lcd-backpack modules, pcf class to easily switch pins is on the playground) 4. make a compact led-matrix shield using a max7219 module to show scrolling text Have fun!

I also love this concept ! Just 1 problem with the temperature sensors : as the ESP heats up, the temperature of the sensor is about 2°C higher as the real temperature. I tried to avoid this with some insulation, but it appears that the heat is transferred through the pins. Another interesting feature : you can use this as a ftp-server, with 3 Mb storage. I use this as serial logger. Great channel !

excellent video, concept and application !!

Thank you Andreas for another awesome video. I bought WeMos D1 Mini from the AliExpress source that you mentioned in one of your video. Now I am thinking to buy some of the shields that you have mentioned in this video and try to make something useful out of them. OLED display and that button with LED can be very useful for any project.

Grüezi Andreas, I have been watching your channel for very long time, and you had a major impact on me starting to tinker with ESP8266, namely Wemos D1 and its shields. I have started an MQTT Temperature logger project - using Wemos D1 mini + DTH22 shield, placed side-by-side in wemos dual socket shield. For some reason, my readings from DHT22 are around 2C off, when the shield is in dual socket base. When I move it further from ESP, it starts reading accurate measurements. I have had this problem since beginning. Originally I had my DHT on top of ESP (I thought, that heat from esp chip is rising into DHT), so I moved it to the side. Readings were still the same, inaccurate (this time I thought, that heat is transfered via pin headers between boards). So I introduced deep sleep in my algorithm - I start the ESP, measure temperature, connect wifi, send mqtt message and sleep for 10 minutes. Both boards are bare, without any enclosures. Only thing which seem to remedy this issue, is to move the dht sensor away - connecting using dupont cables. That made me think, that problem could be wifi interference of esp, so I swapped the dht for SHT30 and I experienced the same - whenever the sensor is next to esp, it reads around 2C warmer, than it really is (confirmed by bunch of other thermometers in my room). Do you have an idea, what could be the culprit of the issue? Thank you, and wish you all the best! Keep up the great work and content :) Peter

Intersting vid! Happy new year!

Very interesting, as usual!

I already have enough ESPs, but after seeing your video, I'm going to have to get MORE! Thanks Andreas! LOL I guess it's ok, I don't have any Wemos yet. Thanks for another great video Andreas!

Absolutely brilliant video Andreas, These Wemos modules seem to make it almost too easy :D il be grabbing a set.

Thanks Andreas - great video! Those WeMos shields look good and at a great price :) Just ordered a few different ones on ebay

I'd be interested in knowing your thoughts on the D1 Mini Pro, specifically if the ceramic antenna (or external option) is worthwhile. Thank you for your frequency of videos, even through the holidays! Keeps me going! :)

Good points as usual. Happy New year everybody :-)

Hallo Andreas. Weißt du noch, woher die Taster mit LED stammen? Gab es da welche mit höherer Tastachse? Hi Andreas. Do you still know where the buttons come from? Were there some with a higher sensing axis? (Google Translation, cause i don't know the Translation for "Tastachse" :) Gruß Fred

omg what a great video, simply PERFECT

Thanks, it is exactly what I need!

Great video !

Very nice Andreas, you must have bought all available shields!

Great video. I ran into the same problem of the duplicate pins on the wemos shields. Now I simply cut the trace on the shield (d1/d2) and add a bodge wire to an available pin (d3). FYI wemos also has a button shield.

Great video. I wish I had the time to work on my toys.

Thank you for an awesome video. Have you ever used the Wemos D1 R2. I using it at the moment wit a DTH 11, reporting humidity and temperature a local mqtt server. Happy new year from South Africa

An interesting video indeed. I think I'll buy a couple of boards and shields.

The biggest advantage of the mini pro is you can re-locate the 0 ohm away from the ceramic antenna and use the IDX for an external +16dB amplified antenna yielding 1000 omni directional meters distance.

Very nice!

Great video, thank you. Did you put the shield compatibility matrix somewhere other than in the video, also? Do you suggest to avoid buying the old revision mini D1, that with the "reset" sign written horizontally?

Hi Andreas, don't forget there is an SHT30-D temperature and humidity sensor board/shield. Also I am using the D1 Mini Pro with the full flash memory, there is a new boards file that enables this on GitHub.

I think that dual and triple base for the D1 mini is super awesome, it helps a lot for most projects, I love it not only for shields but even for soldering my components on it. Is there something like this even for ESP32?

Thanks Andreas.

Hello Andreas! Your videos are like good book which you choose it whenever you need it so i've found this :-) Which flux do you using? I saw it at 4:56 in video. And doy you have any experience with soldering paste? Thank you!

Thanks for the great video. One thing that I really like about the mini is the very fast upload speed of 921600 baud with the Arduino IDE. It would be nice if you could do a range test video with the mini pro using an external antenna.

thank you for another great video :) I've been playing a lot with the D1 mini and still waiting for v2 to arrive (not to be confused with R2). the only thing i don't like is the deep sleep.. its uses about 170 uA, way too much. i blame the LDO, dont know why they didn't use something like the ht7333.

Hello Andrew, I have another question about the Wemos Relay Shield. I notice that the tracks between low-voltage input part and output power unit are very close together. The mains voltage in my house can be up to 244VRMS (345VPP) without considering any harmonics. Is this module safe to use with such a high voltage? Thank you for your answer.

do you also have a sketch of : wemos D1 with relay and temperature sensor. that when it reaches X degrees Celsius the relay opens allowing for example a fan to be powered. another question does the wemos d1 mini run on 3.3 volt or 5 volt, since there is much conflicting information. i want to build my own radiator fan from a wemos d1 mini. {stand alone or wifi based is fine with me} like a master slave configuration with 1 wifi based arduino as the master and the others as a slave that runs the command when told it has to run it

Andreas hello! I've been watching your channel for a long time. Great videos! I would like to add some informations about wemos (we have been using it for a months). The wemos itself is very limited if you try to run more than one sensors at the same type at a time. Not every port runs every sensor. For example DHT's work only on three ports D2-3-4 at 3.3 or 5V. But DS only works at D6 if you run it at 3.3V if you run it on 5V it works on D7 also. Great module but there are lots of things still have to be developed. Even Arduino platform is much more robust and reliable than wemos unfortunately.

Hi Andreas, Im a bit on the blond side.......as this is just a hobby with not many time on my hands, if I want to use a motion sensor , it's pin D2 and D4? Thanks for the great videos. Update on the A7,as you mention you have not done a project, really struggling when batteries are used,the GPS fix point is not correct

Great video as usual! I like shields, but I think it is always better to consider the alternatives. For example, a bare DS18B20 (TO-92) with one 4.7K resistor is very compact and can be connected to any pin.... The same for a common relay shield: it can be connected to any pin. So, the alternative to pre-built shields is to customize your own shields with a bare Wemos D1 mini. Do you agree?

Hi Andreas, I got most of the shields, think I need that proto board shield. I know sadly that relay shield won't go with oled shield, I thought why not break the track of the relay shield and put it on D3 or D4 OR even better one, using a relay shield as a I2C (can be done with ATTINY85 as I2C slave)... any thought?

I have a few of those shields (and a lot of Wemos D1 minis). The only problem I had with the battery shield is that the inductor on it is prone to breaking during transit and that the connector is a little backwards (i.e. when ordering the same type of battery connectors, + and - are reversed compared to the battery shield). The DHT11 and DHT22 shields have the problem of getting hotter than the environment truly is because of the Wemos warming things up (especially the linear regulator on it). But on the whole these shields are great for beginners because there is only little soldering required and you don't have to design your own shield (what I did by the way :D!). TL;DR: Be careful with the battery shield, temperatures are of because of IC heat influence, shields are great for beginners!

Is it possible to add an emitter (on a meter wire) to the Wemos IR shield so it (the D1Mini and shield) can be hidden away and the emitter directly attached to a TV for example?

Hi Andreas , Thanks for your great video's, they've thought me a great deal. Concerning this specific video I have some remarks and a question: One slight advantage the D1 mini Pro does have over the 'regular' one, is that it has an external antenna connector, which might be handy if Wifi reception is poor. I also read (but not verified myself) that the built in ceramic antenna of the pro is by itself already better as the PCB antenna found on the regular ones. Next remark is the battery shield, As others have mentioned, it is really not a good solution for any battery powered project, the voltage is boosted from 3.7v of the LiPo cell to 5V, and then converted back to 3.3V for the ESP8266, this wastes a lot of power. Now for my question: You've mentioned in the comments that you don't think the wemos boards are a good option to use as a finished product on battery operated projects, becuase of the serial chip which is always powered, and the low efficiency regulator. What about using the wemos boards, but instead of feeding them 5V, just feed them 3.3V on the 3.3V pins, this would eliminate the serial chip and inefficient regulator. I'm thinking about doing a project with the wemos board powered by a LiFePo4 cell without regulator directly to the 3.3V pin. Thanks again and keep up the good work!

Good day Andreas. I'm trying to find the pushbutton with LED for this Wemos project, was it in a mailbag that I might have missed?

nice! thanks!

2:18 Mini Pro has antenna connector! Useful when router is behind a concrete wall or need distance.

Hello Andreas, I like your videos very much! Regarding the relay shield: I've got one from robotdyn.com (via AliExpress) and this one has soldering bridges from D0 to D8 on the bottom which makes it extremely flexible. Keep on the great (video) work!!

Andreas. I have a Wemos D1 mini installed inside an aluminum box. It does not get any signal from my Raspberry Pi Zero W as an access point. I even took the top of the project box off thinking some signal will reach the Wemos. No luck.. I just ordered a Wemos mini Pro and antenna. Do you have any suggestions for good signal reception? Should I start thinking about a plastic project box instead? Thanks.

You should try MicroPython on it, I love it. It's really nice to have a quick prototyping language on a prototyping board.

I like those females with long legs :) Awesome video as always. Merry Christmas and lots of views and brain teasing projects for this channel for 2017!!

Hello Andreas, a question for you as a very skilled engineer: Can one DHT22 and several DS18B20´s be used on only one Wemos D1 mini? Can you refer to such a project? Thanks for your support.

Hello Andreas, I wanna a know one does the wemos battery shield has the over drain protect circuit with in it. Just like TP4056

Could you please share the PIR sensor Project details Sir? Is Wemos Battery Shield v1.1 is good enough to use it for Long term operation. Is it suitable for low Current operation?Thanks for all information. Love your videos. Could we make a good 18650 battery solution board as a community and support the Development with funds maybe...

Ein kleiner Unterschied zwischen dem Mini und Mini Pro ist natürlich noch die Anschlussmöglichkeit für eine externe Antenne. Was ist das für ein Button auf dem Prototyp Shield?

Hello Sir! Can you please provide me the link from where you have ordered your Wemos D1 minis from Aliexpress? Thanks!

Hello Andreas, have you experienced DHT22/SHT30 warming up by RF? I noticed both temp sensors show around ~2-4C more than actual temperature in my room. When I connect them via dupont wires and move away from esp they are accurate. Moved them closer to esp (still connected on dupont wires) and they are showing higher temp once again. Any idea why this is happening, how to fix?

As usually your video is very entertaining and educational, but this video made me wonder, if you have tried to make 2 or more ESP devises communicate via Wi-Fi with each other?

if a want to use 2 relay modules, do i have to cut the data trace of one of them and solder it to another pin?

which episode is about the led button? led button is a neat idea...

Just launched my sprinkler system based on temp and moisture. Only puzzle is why does it show up on my LAN? I didn't place any code for it to contact DHCP for network info. Tried connecting to it via SSH but refused any ideas or videos you can point me to.

Now we know your preferences, female with long legs, pins of course. ;-) Andreas, do you ever rest ? Please take it easy, we want you to be with us for a long time. Happy New Year to you and continue you good work.

SEHR GUT !! Dinge an Rande - D3 / D4 sind für i2c auch geeignet - so kann man einige Shields direkt aufstecken ( zB. BMP280 ), - kann es sein das der "Schweitzer Uhr etwas wesentliches fehlt ? - die entscheidende "Sekunde" : - ) Die Lib. fürs Display kannte ich noch nicht also wieder was zum "spielen" ..... so und nun: Besten Dank für deine hervorragenden Filme und Information ( auch wenn sie dann direkt meine Bastel-Börse erleichtern : - ) ) weiter so im Jahr 2017 einen guten Rutsch ins Jahr 2017 und ein gutes Jahr 2017 Gruss aus Bayern

I’m try to learn Micro Python. I was wondering if you had any experience with micro Python and a MQTT publish script?

how does low temperature (lets say up to -20C) affect battery ? does anything other than capacity changes ? I want to build small weather sensor with little solar panel to keep battery charged but I'm afraid it might get damaged during winter

Hi Andreas, do you have the Shields Compatibility List (2:59) somewhere as PDF to Download? Thanks Philipp

So I signed up for IOTappStory and found the project and it says... "Closed Source". Really? What's up with that. Cannot get the source to compile. Can't even look at it. That's not helpful! Where is the source available from?

GOOD

I have the Battery Shield. A cute little thing but I advise against buying it for any serious use. It is rather inefficient. Also, the Wemos D1 mini is not the most efficient to use with batteries due to the CH340 always being connected. Having said that... ofcourse it is great to develop stuff

Könnte ich das STL.File für das Gehäuse bekommen?Im .thingiverse finde ich nichts passendesLieben Gruß aus Hessen.

Hi, how can i tweet from one of this?

Here's a trick to unsolder the pin headers: 1.use a utility knife and carefully pry open the plastic seat of the header; 2.continue prying until the plastic seat is removed; 3.use a soldering iron and apply heat on the pad; 4.with the solder melting, hold the pcb and quickly strike against the table; 5.now you have a clean pad :P downsides of this method: 1.if you are not being careful, you could cut yourself, or scratch the the pad. 2.it is likely that you can't reuse the header

Shield layout control pins for esp8266 board, lol i will use a Trace cutter and a soldering iron to move the relay from D1 to D3 instead = pinMode , will use Ic2 scanner to move the DHT-11 D4 to D2 Data when i get the address,, ect ect, with other's, To Free up D Lines !

I put a example home/garage with WeMs here : github.com/i4things/NodeAPI/tree/master/examples/WEMOS/Garage/thing

Solved: to get the relay to work on a different PIN number, remove the header pin from D1, so it doesn’t interfere with serial communication, then solder a wire between relay D1 and relay D3.

heres a tip: I soldered the short female headers to the bottom side, and used that to glue it down to a board

Wemos mini Pro Esp8266 / 2 Dallas-DS18B20 / ic2 .96'' Oled / Dht-11 Hum-Temp. & Leds outputs as confidence on D6,D7,D8. All tied together working, all done in 1 day, Next Is, to get same data report to, Over WiFi to my phone,, will take much more work yet !! I still Expect to use ic2 scanner to find address of data shield and move pins to Just D1 & D2, to free up D lines, hope it works out.. BYE for Now ...

Nice video. However the modules are rather exclusive development boards. The "D1 mini Pro" will never pass FC certification in this shape. It misses the metalic cover just a short & fast observation. It means that they cannot be used outside the hobby area. The "Mini" is also discontinued and only the mini Pro is now available to be bought.....

I would appreciate an ethernet shield. Thanks for this overview :-)

Years back (1998-9), when PICs where the "Micro-controller of the day", DonTronics of Australia, was selling the same concept as today's "Shields", using SIMM sockets. I don't know why some people are not coming out with shields for the 8266-12E/F in that footprint? Not from lack of pins I am sure? Wemos has only 1 analog pin, but what I loved about it when I ordered one last year, was that each pin (except one, are capable of doings everything else on hardware level (I2C, SPI, PWM,etc..).! I don't know to what extent that is true, since I never used it or thought about it, till now. I think it's a very unique chip if that is in fact true, without the usual bullshit "Gotchas". One can't do much without a lot of I/O (hence the Mega256), I thought it would be a good port extender (I2C to whatever and vise versa) that could bring extensibility to "none-wifi" projects needing port and wifi extensions. For example one could be used to serve as an I2C server. Where it occupies only one I2C address, but can control at least 4 other I2C devices of any address. That would be a very useful "Shield" :) Propeller from Parallax, is too power hungry for battery operations, as are FPGAs.

I need use a i2c screen and relay.... but not can used both?

you Swiss like Chevy in the usa,, lol,, you not have race car,, but you are cool !

The W of the Wemos symbol looks rather ... hmm ... Naughty ;)

I think the Wemos D1 mini is still one of the best implementation of the ESP8266. In the US you can get the board from eBay goo.gl/5D0xMN for not much more and very fast shipping.

and yet, no RTC or GPS shields :(

:-) Swiss and time ... hehe

i really really hate this arduino born idea of calling the shields, they are if anything daughterboards, shields /protect/, these protect against nothing, therefore can not be shields..... If arduino spent more time fixing its ide so it didnt produce bloated code they would help a lot

A female with long leggs! Used as a male on the other side!!! No I'm not into that!