Thank you for looking at my sketch, just noticed the optocoupler is the wrong way around I will flip it now. Can the value of it be changed? I need it to be a 6n138 optocoupler. The diodes vaue needs changing to a 1n914 diode too. Okay thank you! I have just edited the position of the optocoupler. Everything should be right. Chewie 2_fixed.fzz (87.3 KB)
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