Building a Punchtape Reader
NYC Resistor’s phooky built a punchtape reader to read some old punchtapes. After an initial attempt, he built a new reader: This time I used proper phototransistors and IR LEDs I scrounged up around the space (thanks, Miria and Raphael!). Because they’re 5mm in diameter (and the spacing between channels is only 2.54mm), I had […]