Using OUT_0 to power toolboards and other accessories

Corbin4646

Trying to use OUT_0 as a powersource as it has a fuse built in which simplifys wiring.

only information I can find on programming is by tethering it to a thermistor and treating it like a heater

Question is how can I tell OUT_0 to simply just deliver constant power?

Duet 3 wifi mini 5+

droftarts

@corbin4646 Define OUT0 as an output (not heater) with M950 P[output number], then turn it on with M42. eg

M950 P0 C"out0"
M42 P0 S255

However, I don't know if this will turn on expansion boards quick enough to sync on CAN.

See https://docs.duet3d.com/User_manual/Connecting_hardware/IO_GPIO

Ian

Corbin4646

@droftarts said in Using OUT_0 to power toolboards and other accessories:

https://docs.duet3d.com/User_manual/Connecting_hardware/IO_GPIO

sweet thanks!!, perhaps i can use the delay command to ensure the toolboards have power

gloomyandy

@corbin4646 If that is a normal heater/fan output it will also be switching the ground/-ve output line, this may cause problems with whatever you are powering, a lot of things do not like to have a +ve supply without ground, especially if there are additional signal connections....

Corbin4646

@gloomyandy

interesting,

could i just connect the negative OUT_0 to the ground on power in? that way im still using the fuse for OUT_0 or will that cause problems?