New tool to find short capacitors on motherboards : shorty with display

[dicky96]

Re: New tool to find short capacitors on motherboards : shorty with display

Hi Kripton
The AD8628 come in two package types, SOP-8 (which is cheaper) or SOT23-5

I think form your pics you are using SOP-8. Can you confirm that is the correct one for your pcb?

Cheers

[stj]

Re: New tool to find short capacitors on motherboards : shorty with display

I'd think the speed might help, but maybe not, I haven't read the code, but I rarely run out of ram or flash on these small devices.


https://www.raspberrypi.org/products...pecifications/
>Dual-core Arm Cortex-M0+ processor, flexible clock running up to 133 MHz
Ugh. Now I have to deal with threads on a tiny mcu. I think I'll pass on this one for a while, I'm pretty bought into the stm32 ecosystem. Speaking of which, I think this was recently released, it's a version of the blue pill with stm32f4 processor, usb c, and space for a flash chip on the underside. I might grab a few.
https://docs.zephyrproject.org/lates...doc/index.html

i'v seen the F411 blackpill,
but you may as well spend a bit more for a nucleo64 with the chip on.
then you get more i/o and an st-link programmer/debugger module.

[kripton2035]

Re: New tool to find short capacitors on motherboards : shorty with display

@dicky96
yes I use the ad8628 in the sop-8 package for my pcb. (and the mcp3421 in sot23-6)
anyway as I will publish the kicad files (schematic and pcb) once the pcb is ok
you will be able to change the package if you need it.

[dicky96]

Re: New tool to find short capacitors on motherboards : shorty with display

Thanks kripton - I wanted to order the components I don't have in stock so they are here on the slow boat from china by the time your PCB is ready. Really it's just the AD8628, MCP3421, OLED display and Arduino nano I need to get. Everything else I think I have.

[sam_sam_sam]

Re: New tool to find short capacitors on motherboards : shorty with display

@dicky96
yes I use the ad8628 in the sop-8 package for my pcb. (and the mcp3421 in sot23-6)
anyway as I will publish the kicad files (schematic and pcb) once the pcb is ok
you will be able to change the package if you need it.

Will you be offering this in kit form if so what do you think the cost would be

Thanks again

[kripton2035]

Re: New tool to find short capacitors on motherboards : shorty with display

Will you be offering this in kit form if so what do you think the cost would be

sorry only bare pcb for now. may be later a smd-only populated pcb if there is interest.
you should be able to get all the components for less than $20

[light2021]

Re: New tool to find short capacitors on motherboards : shorty with display

Hy, there is my 'producat' or copy of Kripton2035/Shorty with little modifications/add , hardware an sofware. I replace AD8628
with LTC 1050 and work fine. From five of LTC1050 , only one give good results of measurement - offer high precision on low ohm value or high ohm value on this device. I used Atmega328, not Arduino. Have fun with work !
For me was, a lot!

[sam_sam_sam]

Re: New tool to find short capacitors on motherboards : shorty with display

sorry only bare pcb for now. may be later a smd-only populated pcb if there is interest.
you should be able to get all the components for less than $20

What would the cost of a unpopulated board plus shipping cost

[stj]

Re: New tool to find short capacitors on motherboards : shorty with display

i think that was already answered in post #40.

[kripton2035]

Re: New tool to find short capacitors on motherboards : shorty with display

nice to see other variations around my project !

the pcb is ready to send to manufacture (for prototype and test only). should receive it in 2 weeks. then test it and if it is ok manufacture in greater qty.
it should cost EUR 10 with untracked shipping, and EUR 15 with tracking.
there will be an order button on my pcb page of the project.

for now, the last variation of the pcb.

[Ritchie_Uk]

Re: New tool to find short capacitors on motherboards : shorty with display

nice to see other variations around my project !

the pcb is ready to send to manufacture (for prototype and test only). should receive it in 2 weeks. then test it and if it is ok manufacture in greater qty.
it should cost EUR 10 with untracked shipping, and EUR 15 with tracking.
there will be an order button on my pcb page of the project.

for now, the last variation of the pcb.

Do you have a website with more info on please?

[kripton2035]

Re: New tool to find short capacitors on motherboards : shorty with display

sure !
http://kripton2035.free.fr/Projects/shorty-display.html

[dicky96]

Re: New tool to find short capacitors on motherboards : shorty with display

OK I'm ready to buy once you have the PCB available. Thanks

[robante15]

Re: New tool to find short capacitors on motherboards : shorty with display

Keep the project updated, I would like to buy one when possible

[dicky96]

Re: New tool to find short capacitors on motherboards : shorty with display

Any news on when the PCBs will be ready? I have all the parts here now and I'm keen to try building one

[stj]

Re: New tool to find short capacitors on motherboards : shorty with display

i also have all the parts , now i just need to find time to build it
the chinese shipped all the shit real fast though.
funny how actually paying for the post has that effect!

[megaraider]

Re: New tool to find short capacitors on motherboards : shorty with display

(...)
the chinese shipped all the shit real fast though.
funny how actually paying for the post has that effect!

Now you left me curious...
From my experience (couple of hundreds or less) i always got the feeling the sellers were only playing around with the items price and shipping cost (except for express delivery, of course).
Would you mind sharing the site url... (not plain text )

[kripton2035]

Re: New tool to find short capacitors on motherboards : shorty with display

I received the pcb some times ago. but there is a failure I did not find until now.
I made some changes in the schematic, using a constant current source for better repetability,
well I'm still investing. the voltage regulator is giving 2.4V instead of 5V
... and it does not seems to be a short circuit !

[stj]

Re: New tool to find short capacitors on motherboards : shorty with display

Now you left me curious...
From my experience (couple of hundreds or less) i always got the feeling the sellers were only playing around with the items price and shipping cost (except for express delivery, of course).
Would you mind sharing the site url... (not plain text )

just ali-express sellers in general.
just dont use super cuano shipping!!
i opt for ali standard or saver shipping.

[megaraider]

Re: New tool to find short capacitors on motherboards : shorty with display

just ali-express sellers in general.
just dont use super cuano shipping!!
i opt for ali standard or saver shipping.

Thanks @stj
That's what i usually do, but the outcome -time to arrive- varies widely. [Portugal, Western Europe]