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I have 11 of these units now. I have 6 of them running with DHT11 sensors and data logging to my linux server on a regular basis (every 10 mins). I have them all over my house and even one outside in my garden shed. I live on Vancouver Island and so far the lowest temperature record this winter is -2C. The boards are extremely reliable and I have only had to reset them on a very rare occasion.
I love these boards as they are suitable for so many projects. Only issue I have is that on two of the three boards I received one side of the pins were soldered on an angle that make it next to impossible to seat properly on a breadboard or you risk breaking something. I will have to try and heat them up to straighten them out.
Boards were clean, packaged well, one had bent pins but no big deal.
Two of the boards work great, however, one of them seems defective.
I think I've wasted at least 5 hours of my life trying to get it to work, at first I thought it was user error, but now I'm fairly certain its hardware related. I've tried every. single. "fix" 10 pages of google searching had to offer with no avail.
Its weird I have a variety of like 13 different boards all work flawlessly.
Man have I been satisfied with these NodeMCU's I wish I had bought more than 3 at the time. Easy to use, plug-and-play with Linux and the Ardiuno IDE. Tasmota works great on them as well. Integration with Home Assistant was a breeze and they have plenty of I/O pins for multiple sensors to be attached.
A neat little board that's nice to have a built-in voltage regulator so you can power it with 5V through USB and you don't need a UART adapter to flash the chip. Note that the available flash is on the lower end of the spectrum, at only 512K, and not the 4MB that is listed as the spec for the ESP-12E, but this should be good enough for most purposes. I've used one of the three boards I received so far to power a set of individually-addressable LED lights using the WLED library, and it's worked beautifully.
I am almost giving up on my project due to unsuccessful tries on setting up this board. Unfortunately I cannot understand how to make this thing work. I've built the firmware, uploaded to the board, but I cannot get it to my Arduino Compiler.
Can someone help me set it up please? I am new to arduino and electronics. Thank you
So far only followed the steps in the description and my first board I tried works. I think this will be a nice alternative. There are lot of examples built in and it seems simple to use, all examples are well commented.
Came with one of the pins slightly bent but it was easy to fix and works fine. It's quite easy to flash it on Linux via nodemcu-tool. It's easy to get it stuck in a boot loop if you mess up, but easy enough to erase and reset it if that happens. I recommend programming a delay into your code to make it easier to fix.
This is an excellent product. I ordered a kit of three - the first two I happened to use work fine. Yesterday I tried to flash ESPHome on the 3rd, however the product is dead. Return & support dates have since passed. Do I have any chance of getting a replacement or partial credit? I am planning to order another kit of 3 of these. Thanks for anyone with Amazon who cares to respond.
I got the pack of 3 and the first one died on the 31 day mark. second one for different project died 6 hours after I completed the project. Not really happy with this as I wasted 4+ hours soldering everything together just for it to be all go down the drain. Would like refund or replacements.