I needed a way to turn my 3d printers off after they were done printing.
This box goes inline to up to two printers.
The external control box was made from this part:
This box allows you to turn off the printers after a set amount of time.
Be very careful. Youw ill be working with line voltage in this project. This can be dangerous.
Do not work on this when alone in case something goes wrong.
Print the box.
To assemble the box, you will need:
1 - 3d printed box
2 - 3d printed relay retainer plate
3 - 3d printed cover
4 - relay board http://www.amazon.com/gp/product/B00KTEN3TM/ref=oh_aui_detailpage_o03_s00
5 - Inlet plug http://www.amazon.com/gp/product/B0050HH70E/ref=oh_aui_detailpage_o03_s01
6 - Standard wall power outlet
7 - Standard wall cover plate
8 - rj45 jack http://www.amazon.com/Keystone-Cat5e-Network-Ethernet-Punchdown/dp/B00CJGJ1MG/ref=sr_1_32?s=electronics&ie=UTF8&qid=1423113450&sr=1-32&keywords=rj-45
9 - network wire. You can cut up a piece of network for this.
10 - 18 gauge or thicker wire for moving the power.
Place the relay board in the box. Conect the power through the switch.
Break the tabs off of the outlet receptacle.
Run both legs of the AC through the relays to the swtich to ensure that you are switching the power on and off.
Hook up the wires on the relay board to the rj45.
Build the LCD box. Add the arduino. Program it with the supplied arduino sketch.
Connect the rj-45 connector to the box.
Power it up in a safe place.
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