2Instructables29,748Views6CommentsRoanoke, VAJoined January 2nd, 2015
Hi! I'm a technology nut, dabbling in everything from mobile electronics to computers to 3D printing to website design and hosting. I work for Gridpoint, an energy management company, and I enjoy riding motorcycles and dedicating time to my church.


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  • Converting 12v/24v Power Supply to Remote (G-code) Switching

    Sajovicd - Thanks for asking. Interrupting the power inside the power supply provides a measure of protection since the high voltage connections remain inside the protective enclosure and only low voltage connections are needed outside the enclosure, except for the original screw terminals, of course. Plus, I didn't want another component between the wall outlet and the screw terminals. If you want to install the relay outside of the enclosure, please exercise caution and provide some means of protection (3D print an enclosure for the relay?) to prevent shock. -Mindrealm

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  • Converting 12v/24v power supply to remote (G-code) switching

    It looks like the 1.1 boards had a PSEL jumper to choose whether to power the board's 5v logic from the power supply or the USB, but this is absent on the 1.2 boards. I suggest unplugging the power supply inputs from the board and connecting the USB. This should power the board. If so, then use a volt meter to check to see if 5v is present at pin 1 of any of the following connectors: SPI, ICSP, I2C.If so, you can use this 5v for the relay power and pick up the signal in the PS_ON terminal beside the power inputs. DISCLAIMER: I have no experience using RAMBO boards. This information is provided from examining the schematic at at YOUR OWN RISK!

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