I've hacked a toy and I'm trying to trigger a DC motor using optocouplers (should I even try?) I've got my circuit working triggering an LED but when I replace the led with a Motor it won't work. Any ideas why? should I use a TIP120 transistor instead? I would like to keep the circuits separate if I can. The motor does work and have tested it and it runs if I connect the two wires together that I'm connecting to the optocoupler. Am i being really stupid?
Any help much appreciated