Nerd Stuff

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Bubble Display – HP QDSP 6064

I picked up these tiny bubble seven segment displays from Cool Components – https://www.coolcomponents.co.uk/opto/led-displays/bubble-display-7-segment-4-digit.html They are cute little displays ideally suited to counters, watched or displaying your analog values. They can be really power efficient too, with a 2v drop on the segments I can calculate the resistance needed for around 0.5ma. 3v / 0.0005…

Repairing Old Stuff: Commodore PET 2001 – 8 (1977) – Part 1

I have salvaged this lovely Commodore PET 2001 – 8 (Earliest time code on ICs is 1978 so far) from eternal storage and inevitable decay. I hope to restore the PET to a reliable condition by cleaning the board connectors etc, replacing capacitors where feasible and reseating all of the accessible chips. Some may even…

DigiX Arduino all up in your grill: Getting Started and sever example

***Watch my previous DigiX video for more details about the specs.*** The DigiX from Digistump arrived over the holidays and despite some lovely customs charges I am thrilled that it is here. It is a fantastic alternative to the Due and Yun and I am a big supporter of custom boards and the maker community.…