These pins are referenced in the Arduino IDE via an integer value between 0 and 21. Every pin can be used as a digital input or output, for blinking LEDs or reading button presses.
#Arduino pro micro pinout pro
The Pro Micro’s I/O pins – 18 in all – are multi-talented. GND, of course, is the common, ground voltage (0V reference) for the system.The Pro Micro will remain “off” until the reset line is pulled back to high. This pin is pulled high by a 10k&Ohm resistor on the board, and is active-low, so it must be connected to ground to initiate a reset. RST can be used to restart the Pro Micro.If the board is powered through the ‘RAW’ pin (or USB), this pin can be used as an output to supply other devices. This voltage is regulated by the voltage applied to the RAW pin. This voltage will depend on whether you’re using a 3.3V/8MHz Pro Micro or a 5V/16MHz version, it’ll be either 3.3V or 5V respectively. VCC is the voltage supplied to the on-board ATmega32U4.
On the other hand, if the board is powered externally, through this pin, the applied voltage can be up to 12V. If the board is powered via USB, the voltage at this pin will be about 4.8V (USB’s 5V minus a schottkey diode drop).
#Arduino pro micro pinout how to
How to Install Arduino – A general installation guide for Arduino.What is Arduino? – An introduction to the Arduino platform and IDE.If you’re not, consider checking out the related tutorial first. On-Board micro-USB connector for programming.īefore delving into this tutorial, here are some concepts you should be familiar with.The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board.Like Pro mini,the Pro micro also comes in two different models i.e, 3.3v and 5v.The Pro micro 3.3v model has 8MHz crystal oscillator in its board whereas the Pro micro 5v model has 16MHz oscillator which differentiate them.Īlso notice the backside of board in which the model number is marked either 5v or 3.3v.If both of this signs are failed,check the jumper(J1) at the top left corner of the board which is closed for 5V and open for 3.3V. 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 labelled. If you’re supplying unregulated power to the board, be sure to connect to the ‘RAW’ pin and not VCC. There is a voltage regulator on board so it can accept voltage up to 12VDC. 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.
#Arduino pro micro pinout serial
This tiny little board does all of the neat-o Arduino tricks that youre 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 a bulky external USB interface. The Pro Micro is an Arduino-compatible microcontroller with an ATmega32U4 on board.
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