ArduinoClockDiscovery

Arduino Clockspeed Discovery Tool

Author: MKB

Published By: Robots Everywhere, LLC

A simple sketch to figure out the actual frequency an arduino is trying to run at.

Useful for cheap micro/nano boards that don't say on the silkscreen and use a tiny crystal that has no writing on it, or too small writing

How to use:

• Use a programmer that allows Serial to a terminal / serial monitor on your PC
• Set baud on serial monitor at 9600
• Upload the sketch to the Arudino
• The serial string will be transmitted at 2400, 4800, 9600, 19200 and 38400
• Clock information will appear on the serial port, along with junk data due to the other baud rates being mismatched.