Raspberry Pi + 2-ch relay for Ender 3
thingiverse
I upgraded it because I have an Ender 3, controlled by Raspberry with Octoprint and PSU Control Plugin, making it easier to move the printer outside my enclosure. PSU Plugin: https://plugins.octoprint.org/plugins/psucontrol/ Relay: https://www.amazon.com/Channel-Expansion-Arduino-Optocoupler-Triggered/dp/B07LH53G5F I always keep my Raspberry Pi on, while the relay simply cuts off 220v power entering the printer. This way, the raspberry can turn the printer on or off at will.
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