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This is the second of these I have had, they work fine on the Arduino IDE and give no trouble connecting to Wifi or pairing with Bluetooth. Plenty of ports. No issues using these ESP32 libraries: Preferences.h // to use NVRAM for data RTClib.h // For the real time clock; uses I2C "wire" BluetoothSerial.h // To my phone HardwareSerial.h // Hardware to the modem
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Bought for weather-station control but WiFi drops out intermittently and fails to auto re-connect. Power cycle is the only way to reconnect. Not suitable for my project sending data to weather app
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Excellent product for development of IoT devices and other simple control systems with wireless communication. Easy use with linux computers and Arduino IDE.
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This is a powerful microcontroller on a single board, Wifi, Bluetooth, lots of I/O pins. You need to know that the pin layout is the same as the DOIT ESP32DEVKIT V1. "random nerd tutorials" use this board a lot. Some of the I/O ports are not brought out onto pins in this version. The built-in LED is pin 2. You can now easily use the Arduino IDE to program this board, you need to look at a YouTube video.
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Setting up the Arduino IDE requires a few extra steps but so far, no problems - works as expected! The only surprise for me was when I tried to hook it up with WS2812B LEDs - first, you don't need step-down converter - ESP32 has built-in voltage regulator, so the Vin needs 5V (it didn't work when I lowered it to the range 3.0-3.6V given by datasheet). The next surprise was that the LEDs didn't work properly, when I used logic-level shifter from 3.3V to 5V (as opposed to tutorials). Turns out that you can drive the LEDs directly from the data pin without level-shifting (of course with a proper resistor between the data pin and the first LED).
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