Onion Relay Expansion [Discontinued] Chip Family_STM although after five or more

although after five or more shields you may begin to run low on RAM when using an Arduino UNO

The new RFID & NFC expansion board for Onion

The buzzer is controlled by one of the Arduino’s PWM outputs

We think this is a fantastic solution to the crippling e-waste problem

Onion Relay Expansion [Discontinued] Chip Family_STM although after five or moreThe Relay Expansion enables your Omega to control two other, independent electrical circuits. The circuits are isolated from the Omega and can operate at much higher or lower voltages than the Omega. So you can control other circuits youve built or small household appliances rated up to 60W. This Expansion is perfect for home automation projects since it gives you the ability to control other devices remotely using your Omega. It features two