This is the part where I learn from the experts. I BBC was so excited to complete my build and power in my mpcnc, I wouldn’t doubt I messed something up. I think I have double checked all the instructions, but I could have missed a detail…
I purchased the dual Endstop kit from v1.
I wired it up according to the diagrams. Pics. Below. No power to the lcd. No power to the indicator lights on the board.
12 volt, 3 amps are coming out of the power supply into the board. I can measure 12 volts across any of the terminals and from the fuse to the black.
I had the heck of the time getting my LCD to read. I kept swapping and changing the ribbon cables orientation until it worked. Sorry, I don’t even know by sight what board you have other than someone will see what is going on and tell you what to do!
Thanks. Even with the LCD unplugged I don’t see power on indicator led on the Rambo 1.4 board. From what little I have looked at, the board requires 12 v at 5 amps.
I suspect I wired the power wrong or my power supply is bad.
It may be a trick of the lighting, but it looks like your fuse isn’t seated all the way. Might be worth pulling it, checking to make sure it isn’t blown, and reseating.
I did check both contacts on the top of the fuse and both sides of the fuse read 12 volts. It would be quite a fluke for the fuse to see 12 volts on both terminals and have something else wrong.
Thank you to everyone who looked and took the time to read this. As I mill this over, and I have been all night, I think the biggest problem is that my power brick is putting out 12 amps 3 volts and the board needs atleast 12 amps 5 volts.
I am trying to think about other power supplies I might have easy access to.
I do not want to take apart my 3D printer, even for testing purposes. All the computers are Macs, no power bricks. No gaming systems.
What you are doing in that picture will not actually read Amps. You need to hook it up inline, not just passively and then swap you red probe to the amp slot.
At that point what you are reading is how many amps the board is drawing, not how much the PS has. There is not non-destructive Amp test. You need to run them for a significant amount of time with a calibrated Amp drawing load and see it melts down or not.
Unfortunately from what I can see you have plugged your endstops into the wrong ports and Hopefully only blown a fuse. I see you have half of them in (+ & -), they go it (- & S). You have created a direct short I don’t know if that blows a fuse or pops the board, or maybe just the endstop ports.
[quote=“vicious1, post:11, topic:13787, full:true”]
Unfortunately from what I can see you have plugged your endstops into the wrong ports and Hopefully only blown a fuse. I see you have half of them in (+ & -), they go it (- & S). You have created a direct short I don’t know if that blows a fuse or pops the board, or maybe just the endstop ports.
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Here is a closeup if the board. Nothing has been unplugged since the previous photos. The + channels are empty.
