A beautiful kitchen timer using an LED Matrix display #Arduino @grapefrukt @hackaday

Martin Jonasson has built a rather beautiful and unique kitchen timer.

The summer of 2021 I finally got fed up with my crappy Ikea kitchen timer and decided to build my own.

Put together on a piece of perfboard, the handwired circuit also includes an Adafruit PowerBoost 500 Charger, a 3.7 V 2500 mAh LiPo battery, a IS31FL3731 Charlieplexed PWM LED driver, and a piezo buzzer. The top of the rotary encoder has been capped off with a sold metal knob, which combined with the enclosure made of stacked laser cut 3 mm acrylic sheets, really gives the device a very sleek and classy look.

The build was facilitated by a number of Adafruit products:

You can get the code and read up on GitHub, see this Twitter Thread and a Hackaday article.


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