Hi, I have a reprap, working except Arduino does not get power from RAMPS. If I provide it to barrel, works ok. My question is, how to power Arduino correctly in this situation. 1. Using an extra power supply is ugly (but works). 2. I want to wire power from RAMPS to Arduino. Maybe to barrel, maybe to pins, maybe to USB. I need to know which is best, preferably, using RAMPS - to Arduino via pins (without taking it apart again and soldering). An ideal would be something like "wire power supply 5A output to barrel", but I'd like an expert advice first. Thanks. https://reprap.org/forum/read.php?4,748313,748313#msg-748313 Sat, 12 Sep 2026 00:51:31 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,748313,749083#msg-749083 https://reprap.org/forum/read.php?4,748313,749083#msg-749083 replacing-a-damaged-arduino-voltage-regulator

Worked for me . . .]]> Ed would Reprappers Thu, 16 Feb 2017 04:37:59 -0500 https://reprap.org/forum/read.php?4,748313,748483#msg-748483 https://reprap.org/forum/read.php?4,748313,748483#msg-748483
Both the DC jack and the power from ramps vi D1 feed this regulator. So you cant run both at the same time.

power from USB is 5v direct from the computer


You have three options.

1) Replace the mega (or repair if your good at electronics)
2) Create you own 5v from 12v and apply it to the board +5v lines (some people use unused endstop pins for this) (make sure to remove D1 if your doing this)
3) only use usb power for 5v, I would still remove D1 in your case since regulator is damaged you don't want anything trying to power it). This is not recommend if you have a LCD or a servo]]> Dust Reprappers Tue, 14 Feb 2017 16:03:06 -0500 https://reprap.org/forum/read.php?4,748313,748481#msg-748481 https://reprap.org/forum/read.php?4,748313,748481#msg-748481 stephenrc Reprappers Tue, 14 Feb 2017 16:00:18 -0500 https://reprap.org/forum/read.php?4,748313,748424#msg-748424 https://reprap.org/forum/read.php?4,748313,748424#msg-748424 I can provide power via USB, and Arduino runs the program.
I can not provide power via Jack. Diodes go on as should, the program does not run.
But once, accidentally, I used 24V power supply to Jack. And it worked (I turned it off as soon as I realized, but...)
My current hypothesis is that The on-board power supply suppresses the outside supply, unless it is 24V... Anyway, need an advice. I would like to use Jack.]]> Fizpok Reprappers Tue, 14 Feb 2017 12:51:51 -0500 https://reprap.org/forum/read.php?4,748313,748401#msg-748401 https://reprap.org/forum/read.php?4,748313,748401#msg-748401 forums.reprap.org]]]> Fizpok Reprappers Tue, 14 Feb 2017 11:31:33 -0500 https://reprap.org/forum/read.php?4,748313,748399#msg-748399 https://reprap.org/forum/read.php?4,748313,748399#msg-748399 Fizpok Reprappers Tue, 14 Feb 2017 11:25:31 -0500 https://reprap.org/forum/read.php?4,748313,748357#msg-748357 https://reprap.org/forum/read.php?4,748313,748357#msg-748357 Srek Reprappers Tue, 14 Feb 2017 08:37:59 -0500 https://reprap.org/forum/read.php?4,748313,748313#msg-748313 https://reprap.org/forum/read.php?4,748313,748313#msg-748313 I have a reprap, working except Arduino does not get power from RAMPS. If I provide it to barrel, works ok.
My question is, how to power Arduino correctly in this situation.

1. Using an extra power supply is ugly (but works).
2. I want to wire power from RAMPS to Arduino. Maybe to barrel, maybe to pins, maybe to USB.

I need to know which is best, preferably, using RAMPS - to Arduino via pins (without taking it apart again and soldering).
An ideal would be something like "wire power supply 5A output to barrel", but I'd like an expert advice first.

Thanks.]]> Fizpok Reprappers Tue, 14 Feb 2017 05:33:08 -0500