Looking for something with a bit more style than the traditional kitchen timer, [Martin Jonasson] decided ... the idea using a rotary encoder, 16×9 LED matrix, and a Teensy 2.0 microcontroller.

This Brutalist kitchen timer project is a nice addition to some of the kitchen timers we’ve featured in the past, including a minimalist LED matrix timer and a Nixie timer with keypad.

and TMR0L is the value loaded into timer register TMR0L to generate timer interrupts every Time period. In our application the clock frequency is 4MHz, that is, clock period = 0.25 ?s, and Time = 5ms.