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Old 02-19-2021, 12:32 PM   #21
kripton2035
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Default Re: New tool to find short capacitors on motherboards : shorty with display

yes
https://www.analog.com/en/products/ad8628.html
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Old 02-19-2021, 04:49 PM   #22
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Default Re: New tool to find short capacitors on motherboards : shorty with display

so your using it *with* the mcp?
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Old 02-20-2021, 12:46 AM   #23
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Default Re: New tool to find short capacitors on motherboards : shorty with display

I use the ad8628 in replacement of the original mcp6041 aop
and I use a mcp3421 as an adc after the ad8628 and before the arduino.
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Old 02-20-2021, 06:19 AM   #24
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Default Re: New tool to find short capacitors on motherboards : shorty with display

ah - o.k.
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Old 02-22-2021, 06:19 PM   #25
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Default Re: New tool to find short capacitors on motherboards : shorty with display

@kripton2035
Came to my mind, though you probably already thought on this, to include a pulse switch, easily accessed from the box exterior, to reset reading to zero.
This would become handy whenever one's need to calibrate the probes and more often to exclude some known fixed value while probing.
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Old 02-23-2021, 09:14 AM   #26
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Default Re: New tool to find short capacitors on motherboards : shorty with display

this is what the big red button you can see in the videos is for ! make temporary zero, or permanent zero if you long press it is stored in the arduino eeprom.
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Old 02-24-2021, 11:25 PM   #27
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Default Re: New tool to find short capacitors on motherboards : shorty with display

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this is what the big red button you can see in the videos is for ! make temporary zero, or permanent zero if you long press it is stored in the arduino eeprom.
Already wondered what that big red button was for...
Like I said "though you probably already thought on this"
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Old 02-25-2021, 12:39 PM   #28
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Default Re: New tool to find short capacitors on motherboards : shorty with display

I've published the first draft of schematic and source code of the project. enjoy !
http://kripton2035.free.fr/Projects/shorty-display.html
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Old 02-26-2021, 06:10 AM   #29
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Default Re: New tool to find short capacitors on motherboards : shorty with display

thx a lot Kripton2035!!! a lot of beer for you !!!
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Old 03-02-2021, 10:49 AM   #30
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Default Re: New tool to find short capacitors on motherboards : shorty with display

Hi Kripton
I would like to build one of these. Which is the correct OLED display that I need? Can you post a link to it on Aliexpress if possible as I find it easiest to order from there.

I would be willing to buy one of your PCBs when you have some

Cheers

Last edited by dicky96; 03-02-2021 at 10:55 AM..
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Old 03-02-2021, 11:25 AM   #31
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Default Re: New tool to find short capacitors on motherboards : shorty with display

it is a standard 0.91" oled module, in a 128x32 resolution. plenty of them on ebay or ali

there will be a button on the pcb page to buy it, but please wait 1-2 months before it's available.
I must first make one, buy one, receive it and test it, and then only they will be available.

Last edited by kripton2035; 03-02-2021 at 11:27 AM..
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Old 03-02-2021, 12:09 PM   #32
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Default Re: New tool to find short capacitors on motherboards : shorty with display

Thanks Kripton

Something like this one
https://www.aliexpress.com/item/1005...archweb201603_

I may as well order the parts I don't already have here, then everything will be ready

best regards
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Old 03-02-2021, 12:31 PM   #33
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Default Re: New tool to find short capacitors on motherboards : shorty with display

those are cheap!!
last time i got some they cost 1.60 in 5's
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Old 03-02-2021, 01:26 PM   #34
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Default Re: New tool to find short capacitors on motherboards : shorty with display

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Yes these are ok. anyway there are constants at the beginning of the source code to tell the resolution of the oled, easy to change it if needed.
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Old 03-02-2021, 05:53 PM   #35
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Default Re: New tool to find short capacitors on motherboards : shorty with display

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those are cheap!!
last time i got some they cost 1.60 in 5's
Yes, but if you add the Shipping cost US $1.35 (max. 2 pieces) that will end up the same price.
Unless you buy enough pieces to cover shipping cost (Shipping US $3.58 for 3 or more pieces).
My opinion FWIW
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Old 03-02-2021, 07:38 PM   #36
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Default Re: New tool to find short capacitors on motherboards : shorty with display

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Originally Posted by kripton2035 View Post
I've published the first draft of schematic and source code of the project. enjoy !
http://kripton2035.free.fr/Projects/shorty-display.html
I would also be interested in buying a couple of these boards if and when you have them available
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Old 03-03-2021, 05:00 AM   #37
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Default Re: New tool to find short capacitors on motherboards : shorty with display

I'm making the pcb right now, then I'll have them made, then test them and if ok there will be a button to order them on the pcb tab of the web page.
but I need 1-2 months before it's available.
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Old 03-03-2021, 05:04 AM   #38
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Default Re: New tool to find short capacitors on motherboards : shorty with display

Quote:
Originally Posted by megaraider View Post
Yes, but if you add the Shipping cost US $1.35 (max. 2 pieces) that will end up the same price.
Unless you buy enough pieces to cover shipping cost (Shipping US $3.58 for 3 or more pieces).
My opinion FWIW
i got 10 last time.
they are used on gotek floppy-simulators.
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Old 03-04-2021, 04:16 PM   #39
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Default Re: New tool to find short capacitors on motherboards : shorty with display

Really nice. How bad is shipping from france? It's unfortunate that shipping to the US from china approaches free, everywhere else it's a make you cry price.
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Old 03-05-2021, 12:28 AM   #40
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Default Re: New tool to find short capacitors on motherboards : shorty with display

it seems I will be able to ship a letter with a pcb inside for EUR 5 all around the world without tracking, and 8-9 EUR with tracking. more expensive than china of course but still reasonable.
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