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May 12 2018 - Arduino Day!

A few weeks ago I was requested to build a prototype for a timing device with 6 timers and counters, each with their own display. It was not the famous 'back-to-the-future' clock, but it was something close...

My customer ordered the parts from Adafruit.

It turned out to be an elegant solution, as with these devices you can easily hook up to 8 displays on a single I2C bus.

As usual, the driver-software from Adafruit was ok to get started, but in order to deliver a more robust solution, I decided to write my own driver.