The OOET is a multi-purpose board which works with Onion Omega. This Onion Omega Ethernet adapter provides an Ethernet Expansion for the Onion Omega 2
I2C Shield for Onion Omega with Ethernet Port
315Mhz RF Shield Arduino Compatible
Use the Arduino Micro to take control of our complete line of devices with the AMI2C expansion., The AMI2C provides a 5 Volt I2C expansion port,
I2C Shield for Arduino Micro with I2C Expansion Port
WiFi / Cellular Chicken Feeder – Joe Did It
Arduino Uno Click Shield - MikroElektronika
MICO Arduino Cell Phone Interface Shield - ON SALE - MCU-072-001
Buy Arduino Shield Online - Arduino Compatible Shields - ThinkRobotics –
Shields & Carriers — Arduino Online Shop
4 채널 범용 SPDT 릴레이 실드 + 4 GPIO (IoT 인터페이스 포함) > 릴레이 컨트롤러 & I/O
NFC/RFID Shield for Arduino - RobotShop
WiFi / Cellular Chicken Feeder – Joe Did It
MikroElektronika - Daughter Cards & OEM Boards