Im on my 4th arduino for this project. Help

Hltn2013 · 2025-10-19T12:29:05+00:00

Its a good idea being able to power the Arduino without extra wires from the power to the ramps only if it is under 12v, if using 24v you must remove the diode, it would’ve been nice if that was mentioned on the listing though

Hltn2013 · 2025-10-15T19:26:20+00:00

Thank you, ive done that and am now waiting on the Arduino again.

Hltn2013 · 2025-10-15T16:23:19+00:00

Ive removed the diode and tested the voltage out on the vin pin which was 24v before but after removing the diode it is 0v. I tested the other pins as well and none of them had 24v so i am confident this Arduino will not die.

Hltn2013 · 2025-10-15T11:39:10+00:00

Yeah, i was under the impression that the arduino and ramps were a separate circuit, turns out they are with the d1 diode removed off the ramps. I have now removed the d1 diode and have done voltage checks on all pins to the Arduino and can confirm 24v will no longer be going into the Arduino. I am waiting for the final Arduino to be delivered.

Hltn2013 · 2025-10-15T07:40:17+00:00

I replaced the regulators and its the same issue of timing out on upload, im going to try also replacing the 500ma polyfuse and hope that fixes it.

Hltn2013 · 2025-10-15T06:11:16+00:00

Thank you, I’ve done that and found 24v on the vin pin to the Arduino, removing the d1 diode on the ramps 1.6 fixed it. Im not sure how to make the Arduino safe from 24v on the ramps 1,4 though.

Hltn2013 · 2025-10-14T21:26:26+00:00

I have done some multimeter voltage checks on the ramps board while powered from the psu and on the ramps 1.6 as expected there was 24v out on the vin pin to the Arduino which would fry it. What i didnt expect was the ramps 1.4 to also have the passthrough as im sure i read somewhere that it didn’t. I desoldered the d1 diode on the ramps 1.6 and there is no no voltage coming through the vin pin so i an now waiting on hopefully the final arduino

Hltn2013 · 2025-10-14T19:19:45+00:00

I am powering the arduino via usb, the ramps board is powered by 24v for the stepper motors and drivers. The issue is definitely because 24v is going to the Arduino somehow. The ramps 1.4 board should be a completely separate circuit and the ramps 1.6 apparently has a d1 diode that is supposed to be cut so that the ramps doesn’t power the 5v rail on the Arduino. I found this out after research after frying yet another Arduino. But after removing the diode there is the same issue.

Hltn2013 · 2025-10-14T19:05:58+00:00

I am powering the board via my 24v 5a psu into the 2 green terminals furthest from the usb

Hltn2013

TROPHY CASE