We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit. This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled. Then, I utilized the 4x4 matrix keypad design to send keyboard keys, supporting up to 32 keys with two dynamic keypad options. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC.ģ. The ATmega32U4 comes equipped with a full-speed USB transceiver, which can emulate any USB device. There is a voltage regulator on board so it can accept voltage up to 9V DC. Description The Pro Micro is an Arduino compatible board based on the ATmega32U4 and the smallest member of the Arduino family. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. This tiny little board does all of the neat-o Arduino tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interfaceĢ. In contrast to the well-known board Uno, this model has a number of features. With this board, you can create projects where the Arduino device actively interacts with the computer and acts as a familiar peripheral mice, keyboards, and game controllers. The Pro Micro is similar to the Pro mini except with a ATmega32U4 on board. Arduino Leonardo is a platform based on the ATmega32u4 microcontroller. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. Pro Micro ATmega32U4 5V/16MHz Module Board with 2 row pin header for arduino Leonardo Replaceġ. The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet).
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