Monthly Archives: January 2021

Serial output from an ATtiny85

Abstract: The serial protocol is used to display a multitude of information, and is often an indispensable aid that developers use on MCUs (microcontrollers) for debugging purposes. The ATtiny85 is a small device with a limited number of pins that … Continue reading

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#rakulang Puttering about with digital signals

I’m in the process of relearning about DSP (Digital Signal Processing). alas, I’ve forgotten nearly everything that I learned initially at university. That was 30 years ago, mind. One aspect we might like to consider is how to produce tones … Continue reading

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#arduino and #raspberrypi componentless “level shifting”

Arduinos work on 5V, and (Raspberry) Pis work on 3V (actually 3.3V). It is OK to send a 3V signal from the Pi to the Arduino, IIRC, the Arduino registers voltage high above 2.6V, and voltage low below 2.4V. What … Continue reading

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Schrödinger’s Douchebag

A guy who says offensive things and decides whether he was joking based on the reaction of people around him.Watch out, Susie! That guy is Schrödinger’s Douchebag, he’ll trap you in a thought-experiment without your consent! That was Urban Dictionary’s … Continue reading

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