Added psucontrol sub-plugin momentarygpio (#1247)

Co-authored-by: jneilliii <[email protected]>

_plugins/psucontrol_momentarygpio.md

@@ -0,0 +1,55 @@
+---
+layout: plugin
+
+id: psucontrol_momentarygpio
+title: OctoPrint-PSUControl-MomentaryGpio
+description: A sub-plugin for PSUControl. Adds a momentary option to PSUControl power controls that sends a signal for a
+  brief time rather than continuous. Useful for bistable relays.
+authors:
+- Justin Zak
+license: AGPLv3
+
+date: 2023-12-07
+
+homepage: https://github.com/irotsoma/OctoPrint-PSUControl-MomentaryGpio
+source: https://github.com/irotsoma/OctoPrint-PSUControl-MomentaryGpio
+archive: https://github.com/irotsoma/OctoPrint-PSUControl-MomentaryGpio/archive/master.zip
+
+tags:
+- relay
+- bistable
+- power
+- psu
+- control
+- psucontrol
+- psucontrol subplugin
+- gpio
+
+screenshots:
+- url: /assets/img/plugins/psucontrol_momentarygpio/momentarygpio_screenshot.png
+  alt: plugin settings screenshot
+  caption: Settings screen for plugin
+- url: /assets/img/plugins/psucontrol_momentarygpio/psucontrol_screenshot.png
+  alt: PSUControl settings plugin screenshot
+  caption: Settings screen for PSUControl plugin
+
+featuredimage: /assets/img/plugins/psucontrol_momentarygpio/momentarygpio_screenshot.png
+compatibility:
+  os:
+  - linux
+  python: ">=3,<4"
+
+---
+
+A sub-plugin for the PSUControl plugin that allows using bistable relays for power control. It implements
+the same mechanisms as PSUControl, so it requires python periphery to be installed, only it pulls the GPIO
+up/down only momentarily and then returns it to the default state.
+
+### Instructions
+
+- Set the PSUControl Switching Method to "Plugin" and select "PSUControl MomentaryGpio Plugin" from the dropdown
+
+- Then in the PSUControl MomentaryGpio Plugin settings screen, set the appropriate GPIO Device, PIN, and pulse time in
+milliseconds.
+
+http://plugins.octoprint.org/plugin/psucontrol_momentarygpio/