It's been a long time coming but I'm soon at the point where I can start a build thread of my version of Reef-pi. But until then I'll have to post some specific questions here.
I'm drawing up the enclosure for the whole controller in cad so I can laser cut the parts at work (benefits of working at an architectural firm with a model workshop). I want to have some status leds on the front panel.
- RPi power led, I read somewhere that you can hook that up to pin 1 and it will act as a power status indicator, is that true? Does that pin always have power on as default? If not, do you have any suggestions on how to hook up a custom power indicator led?
- Status indicators for relay board/power module. Can I hook up a small 20mA 5mm led (with resistor) in parallell on the GPIO pin that connects to each of the relays?