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About this product
Product Identifiers
GTIN0953880138540
UPC0953880138540
eBay Product ID (ePID)2165773840
Product Key Features
ModelNodeMCU
Ratings and Reviews
Most relevant reviews
- Feb 25, 2018Top favorable review
Exellent product - Hard to Install - Easy to use.
If you want to use it with the Arduino IDE, have in mind that it's not so easy to install. On the other hand, there many tutorials to help you with the precess. You have to download extra software (Git and maybe Python) to get the Arduino IDE to show the ESP-32s boards, compile and flash your sketches. If you manage to complete the installation (it took me a while, that's why i write about it) then it works like a charm. Sketch compiles and uploads really fast. And the board works great. I tested it with "blink" sketch as well as with "WifiServer" sketch with no problems at all. Great product. Nice price. Great features. What else do you need??Verified purchase: YesCondition: New
- May 24, 2018Top critical review
Auto Programming not working out of the box. Brownout Warning resets chip over and over.
To enable automatic programming, a 0.1uF capacitor is required between EN and GND. (If you do not I had to hold down IO0 button to program) Other problem . "Brownout detector was triggered" This resets the Dev board over and over again. This code hides the Brownout issue and Dev board seems to work: //Code start #include "soc/soc.h" #include "soc/rtc_cntl_reg.h" void setup(){ WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector //Code endVerified purchase: YesCondition: New
- Feb 22, 2019
Excellent value for IoT experimentation.
Testing this development board as a plug-in replacement for a more expensive one on Amazon. This one isn't finished as well, and has cheaper silkscreening on the pin side, but that did not matter too much. Also, no schematic (the Amazon one has the schematic). There are several Internet PDFs from hobbyists who have nice overlays to work with the device with a breadboard, since you cannot see the silk-screening. Initially, I could not program the device with my Linux espressif toolchain, as the device was in constant reset (SPI_FAST_FLASH_BOOT) after a program was downloaded into it. After a while, I decided to run a simple "blinker" sketch from the Arduino environment (NodeMCU32S) and was successful, as was a more complex sketch that employed the onboard http server. No issues. So I went back to my espressif environment , and this time, the device "took the programming" and worked just like the Amazon one. I'm using it with a Passive IR sensor, a few LEDs and a high torque servo. These are great boards, and I plan to buy a couple more of these as my home automation experimental projectsVerified purchase: YesCondition: New
- May 17, 2019
Extremely versatile little unit
Bought this to build a custom weather station Pros: + Small footprint, can fit in a permanent shadow of my balcony railing, to get accurate measurements + Has deep sleep mode perfect to conserve battery + Has wi-fi to attach to home network and report the results + Powerful enough to serve the results via HTTP + Has enough on-board memory to provide nice UI and detailed week or month-long weather log + Has enough peripheral connections to allow for temperature, humidity, pressure and air pollution sensors + internally runs on 3.3v, compatible with most sensors without level adjustment logic Cons: - A bit of an overkill for just a weather station - I might add more sensors to it because I can.Verified purchase: YesCondition: New
- May 20, 2020
So much better than the arduino in many ways
I bought this to replace an arduino since I ran up against the memory limit. I was really pleased with how easily it's incorporated into the arduino IDE, and how similar it is. In the end it's much faster than the arduino, has much more memory, and has built-in bluetooth (both BLE and classic) and wifi. The only downside is a higher current draw. But I'm completely sold on these things.Verified purchase: YesCondition: New
- Apr 06, 2019
Works great.
I was able to get this setup and usable in about 15 minutes. Only problem I had was downloading a script using the arduino ide. Turns out you have to hold one of the buttons down for it to start downloading. It would be nice if they came with an instruction sheet, but none of these types of electronics I've bought have them.Verified purchase: YesCondition: New
- Oct 30, 2017
Works great after problems in programming
It is a nodeMCU ESP-32S V1.1 module. At first programming failed in Arduino. Solution was to Hold the IO0 button pressed under programming and after the item worked flawlessly. Forums said v2 doesn't have this issue. By the way the dev board does its work.Verified purchase: YesCondition: New
- May 16, 2018
Cheap, and works great - if you have experience with similar stuff.
Using this as an IoT device in my home automation network. Right now it's just logging temp and humidity with a DHT11 sensor. And it works GREAT-O, and it is CHEAP-O. Using Particle.io as IDE on Atom which works great after a lot of fiddling. Not the best documentation, but not the worst either. If you want good documentation, go for the (much) more expensive Particle Photon. For example, this happened: After a windows update, the driver to this device was rendered unusable, the workaround - published by the authors of the driver - included opening up windows for installing unsigned drivers and manipulating values in the driver file. If that made your head implode, don't buy this. Stuff like this happens with these chips.
Verified purchase: YesCondition: New
- May 09, 2019
Excellent easy to use development board. Beware the ESP32 A/D converter, however.
These boards work as advertised, and are easy to use with the Arduino IDE. The only "issue" is with the ESP32 itself -- the advertised "12 bit A/D converter" is rubbish, with horrible non-linearity and deadband at both ends of the range. So buy this board, but use an external A/D converter, like the ADS1015, which has four channels of 12 bit conversion (or two channels differential.) Again, this board is fine (and don't bother buying the 36 pin version; the extra 6 pins are pretty much unusable anyway). I recommend the board. I don't recommend the ESP32 A/D converter.Verified purchase: YesCondition: New
- Jun 25, 2019
Lots of features and easy to get started with!
If you have experience with similar boards e.g. Arduino, and the Arduino IDE this board is great! There is a lot of projects available on different forums.Verified purchase: YesCondition: New
