Adafruit Pro Trinket - 5V 16MHz Shipping:1 day It can be used to

It can be used to load up CircuitPython

Comparison with the Zumo robot kit for Arduino (with Zumo Shield)

Relays - 8 with snubbers for inductive loads

Using these features

Adafruit Pro Trinket - 5V 16MHz Shipping:1 day It can be used toDeprecation Warning: The Pro Trinket bit bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Pro Trinket so that people can maintain some older projects, we no longer recommend it. Please check out the Metro Mini (ATmega328 @ 5V 16 MHz) , ItsyBitsy 32u4 5V 16MHz , ItsyBitsy 32u4 @ 3. 3V 8MHz or ItsyBitsy M0 @ 3V 48MHz . All have built in USB and are comparable in price!