Optically isolated servo motor - Wiring (6n137 and 4N35)

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i want optically isolated circuitry of motor servo of synthetizer circuitry these bastl module.

the reasons simple; ground of servo create pollution modular synthetiser, it's absolutly same thing midi io.

the goal create someting that:
http://www.bastl-instruments.com/modular/servo/

this bastl modular nice it's not accurate 12v servo , it's not portable, goal use servo motor @ 10 feet distance modular synthetizer...




there schematic, servo motor fail. test, use arduino exemple arduino - knob. simple code. pwm not pass on optpcoupler


that's all!
thanks me resolve mistake of life.  ::)

how using pullup resistor in range suggested datasheet, 330 ohms 4k.  lower is
going better risetime, 470 or 1k

[ suspect servo has internal 10k pulldown or that, weak pullup
like 10k isn't useful ]


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Optically isolated servo motor - Wiring (6n137 and 4N35)


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