MicroUSB ATtiny85 dev.board (Digispark compatible) The MicroUSB Digispark compatible developing board is an Attiny85 based microcontroller, board similar to the Arduin0 line, only cheaper, smaller, and a bit less powerful.
Mega 2560 PRO (Embed) CH340G/ATmega2560-16AU w/ pin headers The Mega Pro Embed CH340G / ATmega2560 board is based on the ATmega2560 microcontroller and the USB-UART adapter CH340.
Multi-Function Shield for Arduino
Xbee Expansion Board compatible
MKR2UNO Adapter The MKR2UNO Adapter allows you to turn your Arduino UNO form factor based project into a MKR based one without too much effort!
Velleman KA07 RTC Shield for Arduino® Add a real-time clock to your project and get an easy and accurate time measurement. While the map is measuring time and date, the controller performs other tasks.
38KHz IR Digital Receiver for Arduino
Accessory Shield for Arduino
Data Logger Shield for Arduino
Accessory Shield for Arduino Development