New answers tagged electronics
That circuit is horribly wrong: The connections to pins 4 and 5 of the MIDI connector are exchanged (and that connector is labelled wrong). RB must be 220 Ω. The CNY17 optocoupler is often too slow; use a H11L1, or better a 6N137. RD is too large unless you're using a really fast optocoupler. But when you're using a correct circuit (see, for example, ...
Top 50 recent answers are included