Deek-Robot Pro Micro

Deek-Robot Pro Micro

The Deek-Robot Pro Micro is the most popular, or at least most available, of the Pro Micro clones. There are dozens of different brands of this board, but the only one we could find with a traceable brand name on it was the Deek-Robot board. Amazingly, they have a website that comes and goes. Sometimes it has nothing on it. Sometimes it has four or five products.

A Deek Robot shown with an Arduino Pro Micro for comparison.
Figure 1. Deek-Robot Pro Micro with Sparkfun Arduino Pro Micro

The Deek-Robot Pro Micro is almost an exact replica of the Sparkfun Arduino Pro Micro. The only differences we could find were the color and the missing Sparkfun logo. We use them interchangeably, the Deek Robot and the Sparkfun, often saving the Sparkfun for development. It should be noted that all of the Pro Micro boards have a pinout almost identical to the Pro Mini, except for the SPI pins, which would normally be on 11, 12, and 13. On the Pro Micro they are on 14, 15, and 16. pins 11, 12, and 13 don't exist on the Pro Micro.

Similarities or differences between the Deek-Robot Pro Micro and the Deek-Robot Pro Mini, based on the general pin configuration:

  • I2C is on pins 2 (SDA) and 3 (SCL), not A4 and A5
  • SPI is on pins 14 (MISO), 15 (SCK), and 16 (MOSI)
  • There are four analog inputs (A0-A3) rather than six (A0-A5)
  • There are 14 digital I/O lines, RXI, TXO, D2-10, D14-D16

A size comparison of the four small form factor Arduino boards is helpful to see where the Deek-Robot Pro Micro fits in the tiny Arduino board lineup.

Deek-Robot Pro Micro
MCU ATmega32U4
DigitalPins 14
Analog Inputs 4
Analog Outputs 0
Operating Voltage 5
Operating Frequency 16MHz
3.3V Output None
Test Current Draw36mA
Web Site Deek-Robot
  1. Information from manufacturers and other sources.
  2. Test current from sketch that exercises I2C, SPI, and analog pins.
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