NefMoto > Noob Zone > Noob Questions (Moderator: turboat) > Create a Bench Power Supply
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Author Topic: Create a Bench Power Supply  (Read 4162 times)
PandaMak100HP
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« on: May 30, 2019, 02:24:23 PM »
Hi all,

I am very new to bench programming an ECU (new to programming ECUs entirely...) but was wondering how do you power your ECUs with 12V on the bench? I have been curious if it's possible to hack a power supply with a PC power supply (have seen some videos on Youtube about it but not for ECU purposes).

Are there any things I have to keep an eye on with regards to making sure there is only a particular window of voltage I have to give the ECU (such as 12-13V) and does current play a role in keeping the ECU alive while programming without interruptions?

I am sure there are perfectly good bench power supplies that are available but lets keep this in the realm of "I am so effing broke that I gotta ghetto ass do my ECU".

Much appreciated,
PandaMak100HP
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BlackT
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« Reply #1 on: May 30, 2019, 02:35:18 PM »
I use ATX power suply from computer.
No modifications, yust put switch betwen green and black wire on big ATX conector. So you can switch it on and off.
Take any yelow wire that is 12+, black wire is GND
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PandaMak100HP
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« Reply #2 on: May 30, 2019, 02:38:31 PM »
And there are no issues with regards to current or anything? There is a great video (https://youtu.be/F3_OeVjKHr0) that makes a great PSU and was hoping I can use something similar.

Thanks for the quick response Smiley

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Blazius
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« Reply #3 on: May 30, 2019, 02:52:42 PM »
They put out 20 amps on a single rail or so , current is not an issue lol, just take any 12v wire and a black one, you even got 5v wires etc. To start you short the green and black wire next to it on the 20/24 pin connector.
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PandaMak100HP
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« Reply #4 on: May 30, 2019, 02:54:28 PM »
Awesome! Thanks guys. Next project is to build it Smiley

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BlackT
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« Reply #5 on: May 30, 2019, 02:54:33 PM »
No,  ECU curent is small when programing, and ATX have huge enought capacitor. So don't worry  Wink
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Jerry Tunin
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« Reply #6 on: May 30, 2019, 09:48:23 PM »
I use a 16v Dell laptop charger then a few diodes to drop the voltage down to ~14v.  Works great, never had any funny business.
« Last Edit: May 30, 2019, 09:49:55 PM by Jerry Tunin » Logged
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Jerry Tunin
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« Reply #7 on: May 31, 2019, 06:02:15 AM »
12v power supply from router
It's enough for a bench flashing
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eliotroyano
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« Reply #8 on: May 31, 2019, 07:08:04 PM »
I am using a high current LED STRIPS 13.5V power supply. From my point of view it is small powerful reliable and not expensive at all.
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macxxx
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« Reply #9 on: May 31, 2019, 10:13:09 PM »
Quote from: BlackT on May 30, 2019, 02:35:18 PM
I use ATX power suply from computer.
No modifications, yust put switch betwen green and black wire on big ATX conector. So you can switch it on and off.
Take any yelow wire that is 12+, black wire is GND
Using the same setup - powering ecus , clusters etc
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PandaMak100HP
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« Reply #10 on: June 01, 2019, 01:12:32 AM »
Managed to get my hands on a free dell PC, how convenient! Now to get some bits and bobs to make it awesome. Gonna do a similar PSU like the video I posted in the earlier post

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