I’ve installed the Hexagon hotend on my Taz 4, and I noticed that it was plugged into a PWM pin on the RAMBo. Is there a way to directly access and control those pins to adjust the fan speed or turn it off, as it currently appears to always be on 100%?
I’m actually looking for a way to control the brightness of some LEDs, and I’d like to be able to do it through those pins.
Also, is there a place to get some always-on regulated power to power a Raspberry Pi, even when the Taz is switched off? And to power the aforementioned LEDs while I’m at it? I expect to use transistors to control them, unless those PWM pins can handle lots of current (around 100mA per channel, possibly more).