The AAduino is an wireless Arduino clone the size of an AA battery with Keystone battery terminals rotated 180° to act as positive and negative terminals. It is meant to go inside a 3xAA battery holder creating a very small wireless node. Powered by an ATMega328p, it is fitted with an RFM69CW companion, two DS18B20 temperature sensors and an indicator LED

Temperature Sensor Digital, Local -55°C ~ 125°C 9 b, 10 b, 11 b, 12 b TO-92 #commonpartslibrary #integratedcircuit #temperature #sensor #digital

Temperature Sensor Digital, Local -55°C ~ 125°C 9 b, 10 b, 11 b, 12 b TO-92 #commonpartslibrary #integratedcircuit #temperature #sensor #digital

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.

100 mm x 140 mm ESP32-based 18650 battery state-of-health analyzer prototyping board with active MOSFET discharge switching, current/voltage measurement, OLED UI, DS18B20 temperature input, and fan control.

ESP32-based automatic Normal Saline Solution warmer with dual DS18B20 temperature sensing, ILI9341 TFT display, relay-controlled 12V heater output, buzzer/LED alerts, push button input, and segregated high-current PCB layout for thesis prototyping.

150 mm x 15 mm 2-layer soil moisture probe using an external 3.3 V supply, FDC1004 capacitance sensor, DS18B20 temperature sensor, top-half component placement, and a bottom-half exposed interdigitated sensing electrode region on both copper layers with 1 mm trace/space for JLCPCB 0.8 mm fabrication.

Termostato da incasso con NodeMCU ESP8266, sensore DS18B20, alimentazione isolata 230 Vac, uscita relè SPDT a contatto pulito per caldaia e controllo via pagina web Wi-Fi.

Compact 24 V Cat5-powered RS485 node with STM32, 3 bistable relays, 3 DI, DS18B20