8 ms·
I seem to recall one could damage a computer easily by interfacing through the parallel port without isolating correctly... Doesn't look like this guide covers
by mcmancini 11y ago
I seem to recall one could damage a computer easily by interfacing through the parallel port without isolating correctly... Doesn't look like this guide covers the pitfalls.
- Gracana 11y agoThere's a current limiting resistor and a back-emf protection diode across the relay coil, that's nothing fancy but it ought to be enough.