AITRIP 5pcs Digispark Kickstarter Attiny85 General Micro USB Development Board for Arduino
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Product Details
Support for the . IDE 1.0+ (OSX/Win/Linux).||Power via USB or External Source - 5v or 7-35v (automatic selection).||On-board 500ma 5V Regulator.||Built-in USB (and serial debugging).||6 I/O Pins (2 are used for USB only if your program actively communicates over USB, otherwise you can use all 6 even if you are programming via USB).