Re: Remote Control Power Switch using Raspberry Pi
Jackal 21 Jan 2017, 20:13: "I have only implemented remote switch off on my delta with raspberry pi and Omron remote reset switch (https://www.omron.com/ecb/products/pdf/en-a8gs.pdf)"
After seeing this in the linked thread above, I ordered one of these switches, thinking that I could easily drive it to shut down mains power to the MeanWell SE-600-24 that powers my printer.
This has hit a snag after realizing that it requires 5V 0.2A to trigger the coil, and that the G-code driven power off only opens a switched dc contact on the ATX control pins.
My questions are: is there any way to change what output the ATX M80 and M81 trigger, or to invert the switch behavior (M81 i1 for instance?)
If I could invert the switching behavior, I could run a voltage regulator or just a divider circuit, and either drive it through the ATX power output or a transistor, to trigger the reset coil on the power switch.
The other option that I was pondering was to use an external transistor to switch it, controlled by one of the unused heater outputs on the expansion header.
If going that way, is there any relatively simple g-code to trigger it after the thermostatic extruder cooling fan has turned off, like the ATX power seems to already have logic programmed to do?
I was hunting for any g-code to do this, but was not finding it if it exists.