Volos uses the ESP32 microcontroller's USB host capabilities to build a word processor that interfaces with a USB keyboard, showcasing the chip's potential for complex USB tricks.
A step-by-step guide on how to flash the prerelease 1.7.0 for Nerdminer V2, including downloading required files, using the esptool-js Flash Tool, and troubleshooting tips.
An open-source device, kv4p HT, connects to an Android smartphone and turns it into a radio transceiver for about $35. It uses an ESP32 and transmits one watt, featuring APRS and scanning capabilities. The PCB is simple and affordable with a 3D-printed case.
A Trinket for The Pawn Shop, interacting with an OLED screen and an LED strip, displaying messages and scanning for Bluetooth Low Energy (BLE) devices.
MicroPython is a powerful and user-friendly interpreter for embedded systems, providing interactivity and ease of use for rapid development. The article discusses its advantages, such as the Read, Evaluate, Print, Loop (REPL) interface, and its extensive library support.
A Flasher utility for DIY miners to flash NerdMiner firmware onto various boards, such as LILYGO S3 Dongle, LILYGO T-Display-AMOLED, ESP32-WROOM, LILYGO T-QT, TDisplay v1.14, ESP32-2432S028R, and M5-StampS3. The flashing process should take less than one minute.
Improved version of first ESP32 NerdMiner, an open source project that allows you to try to mine Bitcoin with a small piece of hardware.
Nerd Miners offers Bitcoin lottery miners with plug-and-play functionality for DIY enthusiasts.
Track Bitcoin prices automatically with an ESP32 and an OLED display using MicroPython or Arduino.
/u/BesBesCat writes:
```
JSONVar getBTC() {
String serverPath = "http://api.coindesk.com/v1/bpi/currentprice.json";
jsonBuffer = httpGETRequest(serverPath.c_str());
JSONVar myObject = JSON.parse(jsonBuffer);
return myObject;
}
// Use Coindesk's API instead.
```
/u/BesBesCat writes:
```
JSONVar getBTC() {
String serverPath = "http://api.coindesk.com/v1/bpi/currentprice.json";
jsonBuffer = httpGETRequest(serverPath.c_str());
JSONVar myObject = JSON.parse(jsonBuffer);
return myObject;
}
// Use Coindesk's API instead.
```
CodeCell is a tiny, Arduino-compatible module with an ESP32-C3, sensors (light, proximity, optional motion), and USB-C charging. Perfect for robotics, wearables, and IoT projects.
