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AITRIP Pro Micro Module Board, Replace with Pro Mini Compatible with Arduino with 2 Row pin Header 10pack
Feature running at Compatible with Arduino IDE On-Board micro-USB connector for programming 9x 10-bit ADC pins 12x Digital I/Os (5 are PWM capable) Rx and Tx Hardware Serial Connections dimension 33.5 x 18.5 mm(1.3 x 0.7 inch) Package includes 10pcs Pro Micro Module microcontroller The Pro Micro is similar to the Pro Mini except with an on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on-board and do away with bulky external USB interface. The acceptable voltage range is 5 to 9 V. On-Board micro-USB

Price is $66.00
Price: $65.99