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

4-Channel Secure 433 MHz Automotive Relay Receiver with STM32G071 and RFM69HCW, featuring a 16-pin Digi-Key right-angle ≥10 A/circuit connector, 2 oz copper 10 A traces, AEC-Q200 Digi-Key control passives, and verified LED/pushbutton wiring #automotive #433MHz #STM32G0 #RFM69 #relays #10A #2ozCopper #AECQ200