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DIY chipKIT Uno32 Stopwatch

This project is for those who always wanted to make their own stopwatch. It’s built using a combination of eight seven segment displays multiplexed together and hence can be control by a fewer number of pins. It’s capable of timing minutes seconds, and even 1/10 of a second. The entire project revolves around a chipKIT Uno32 board. Along with the capability to time, it also has start and stop buttons just like a traditional stop watch. This project uses the millis() function for time keeping. The millis() is a built-in function in Arduino, and so in MPIDE, that returns the number of milliseconds elapsed. The LedControl library is used in this project to interface the MAX7219-based seven segment LED display with the chipKIT Uno32 board. The stopwatch is started and… Continue reading