Adafruit Pro Trinket - 5V 16MHz Shipping:1 day along with pads for 3V

along with pads for 3V and GND)

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Relays - 8 with snubbers for inductive loads

The Mega is compatible with most shields designed for the Arduino Duemilanove or Diecimila

Using these features

Adafruit Pro Trinket - 5V 16MHz Shipping:1 day along with pads for 3VDeprecation 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!