📡 HiLetgo ESP-WROOM-32 ESP32 ESP-32S Development Board: Dual-Mode WiFi + Bluetooth Microcontroller with Integrated Antenna RF AMP Filter for Arduino IDE Review

This board is really good! I'm currently using it as the brain of a small robot with two servos that receives commands on port 80 from an ESP8266 remote. At the moment, Bluetooth and AnalogWrite() are not yet implemented in the Arduino library, but PWM is fairly easy to implement using ledcWrite() and related functions. I downloaded the Arduino library from GitHub /espressif/arduino-esp32, copied the library to Arduino/hardware/espressif/esp32/ and then ran the script in the /tools folder to…

These are fantastic little microcontrollers once you get over the kinks. What's good: The NodeMCU board is well documented and there are plenty of tutorials online, no matter what your project is. It's really picky about which USB cables you use. Of the 15 or so cables I have, only one works. Guys at HighLetgo: If you're reading this, what cables do you recommend? The pinout is numbered on the bottom of the board. A mess if you use a breadboard. I have to keep counting the solder bumps to…

**Update** After about 30 days of operation, this ESP32's wifi module died - it outputs random data, then keeps crashing every access WiFi. I have two other esp32s purchased at the same time from another vendor that run the same code with no problems. I am still using the paper receipt they sent as it is identical to the other unit so the 1 star rating is saved. -------------- I bought several ESP8266 and ESP32 from different vendors to test several options. I've seen almost every seller and…

I received the HiLetgo ESP32 board on December 31, 2017. "Unfriendly" but with these little gimmicks, it's better to be safe than sorry. If you're using the Arduino IDE, you'll need to install the board library for that hardware either with Git or by downloading the zip file and extracting it manually. If you've ever played around with its little sister (ESP8266) you should be able to do so, although it's not that easy (no board manager as of 12/31/2017). After about 30 minutes of setup I was…

Conclusion: This is a well made device. There are nits, but for the price I think it's a good deal. You can use the Arduino IDE and a framework, or the ESP-IDF framework, or even mix and match a bit. It uses version 1 of silicon (see below). Pros: * It flashes without having to press any buttons; I suspect this is done using the de facto standard of downgrading some serial lines. Solder joints are clean with sufficient solder and no flux residue. The circuit board is black, which is both a plus

I used an Arduino Mega2560 when experimenting with sensors that have analog outputs. So I'm counting on a good ADC. The Arduino seems to have a pretty good ADC. The temperature sensor I created was pretty accurate (as you might expect). I've read that the Arduino is really just a beginner's toy and the real deal for more serious work is the ESP32. So I bought this ESP32 and transferred my temperature sensor to it. Wow I was disappointed. The ADC conversion is wide and non-linear. I did a little