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Your cart is empty.An open-source firmware and development kit that helps you to prototype your IOT product within a few Lua script lines.Open-source, Interactive, Programmable, Low cost, Simple, Smart, WI-FI enabled
Mark Serrano
2025-09-02 11:50:13
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horack
2025-08-25 13:52:06
These things are awesome. I am currently running 3 of them with a small 64x128 OLED display and a DHT22 sensor in different places in the house. All this built using the Ardunio IDE. I have also added some NTP code I found on the web and now each board syncs up its clock using NTP, so it's almost like having an RTC onboard (as long as you have internet connectivity, at least one time when you power up or reset the device). One of the most awesome features is being able to use the ArduinOTA package so that I can now make code updates wirelessly over wifi after burning the initial code into each board. There are only a few reasons that I would maybe use an Arduino board instead of these: Analog inputs - this has just one built in. Most of my analog input sensors already provide SPI or I2C interfaces, so that's not an issue for me. You may also opt for Arduino if you absolutely need a 5V device (these are 3.3V) or for something battery powered where you'd want the lowest drain. Not sure yet if I can shut off the wifi radio in this guy to achieve similar low-power useability but for 90%+ of my projects, this has just become my go-to board. Note that the one I got from HiLetgo seems to be better than two other ones I got later from another seller. The HiLetgo one can be programmed at a full 921600 baud over USB, where the ones from the other seller can only be programmed reliably at 115200. This could be just luck-of-the-draw and probably they all come from the same factory and it may have just been a batch of less precise processor crystals or who knows what. The difference in programming speed isn't huge, so no big deal. Overall, I am very pleased with these boards. I've attached a pic of my temperature/humidity sensor project. Uses just a NodeMCU, a breadboard, an I2C OLED display, a DHT22 sensor, a 10Kohm resistor and 7 jumper wires. I can access each one of my 3 boards through any browser to get the readings off of it. You could get rid of the OLED and 2 jumper wires, if you just want to be able to read your data through a browser.- Quick follow up: I just got 3 more from HiLetgo and they all can be programmed at full 921600 baud, so FWIW, the HiLetgo "brand" appears to be better than the batch of 2 I got from a different seller, which could only be programmed reliably at significantly lower speeds though they still appear to run code fine after programming. I still love these NodeMCUs :)- Another follow up: I have created a githup repo (search github.com for "esp8266_arduino_temperature_nodes") with the source code. It's a bit of a hodge podge since it's just experimental as I play with this board's capabilities. (update: added ILI9341 TFT display, see pic) Hope somebody finds it useful.
Saidev S
2025-08-23 15:56:03
Good product .I uploaded a code it sucess
Muhammad Asharaf
2025-06-26 21:57:13
Best Buy for the money. No problems and works perfect.
José Octavio Zaragoza Zambrano
2025-05-03 16:33:34
Bien y en tiempo, pero hay más baratos
Henri Bergius
2025-03-06 10:56:11
I ordered six of these boards yesterday. They arrived quickly, but two out of six were not working (one not flashable at all, one not able to connect to WiFi). Lots of the soldering is shoddy and connections between components weak or non-existing.
Jack
2024-12-06 12:30:05
Board received is completely different from standard NodeMcu boards. I was unable to find specs nor the proper pinout for this board. Supposed manufacturer HiLetgo, doesn't list any similar boards on their website.
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