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If you’re not familiar with the 555 timer, suffice it to say that this versatile ... on hackaday.io), was built on a postage-stamp-sized PCB with 50 mil square pads for external connections.

The PCB KiKad files in this repo implement a composite mod board for the ZX81 as described here. More details can also be found on the excellent joulespercoulomb YouTube video. If the backporch signal ...

It’s back! The 555 timer contest wants to see you do something cool with the 555 timer chip. At stake is the adulation of electronics geeks everywhere. Three top winners will be awarded a $150 ...