USB-powered ESP32-WROOM-32 industrial vibration and temperature monitoring sensor node with ADXL345 SPI accelerometer, DS18B20 1-Wire temperature sensor, SSD1306 I2C OLED, LEDs, buzzer, relay header, and 3.3V AMS1117 power supply.

USB-Powered Seeed Studio XIAO nRF54L15 Module as Electrically Isolated Placeholder from TPS61088 Boost Converter Section

USB-Powered ESP32-C5 Indoor Air Quality Monitor with STCC4 CO2/SHT41 (I2C), PMS7003 (UART), AP2112K 3.3V LDO, Polyfuse Protection on 55×45 mm 2-Layer PCB