Pro Micro ATmega32U4 5V 16MHz ersetzt ATmega328 Arduino Pro Mini
6,75 €
The USB transceiver inside the 32U4 allowsus to add USB connectivity on-board and do away with bulky external USBinterface. This tiny little board does all of the neat-o Arduino tricks thatyou're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs aswell as hardware serial connections Rx and Tx.
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