I never know if this site is useful or not and so it is really nice to hear from people who have built the device. But remember, building the device is only the start.
With hindsight, the inline LEDS are not such a good idea (means more current draw on the Arduino pin) and the LEDS just before the optocouplers can be safely removed. I included them to aid with debugging when I was first developing the device. That and the fact I like LEDS. I am now working on version 3 and this does not have the LEDs.
- This reply was modified 4 years, 2 months ago by Martyn.