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Author Topic: stm8s003f3  (Read 653 times)
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David_1
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« on: February 08, 2021, 09:40:23 21:40 »

Hi all Ive been away awhile Smiley
so my new plan ... Van Life  well sort of inside these Chinese diesel heaters is an ECU, It talks to the display/controller both ends seem to contain an ST chip.
I thought getting the code out would be easy so I started buy cheap pcbs that should contain similar chips.. I have failed on such a scale I wont even admit how many W1209,s ive bought.

I gave up there, so new plan just buy the little dev boards with a power led and led connected to pin 20. Write code the flash LED..
I have code but still waiting for more dev boards..
The hack to extract  code  is just a glitch on the reset pin I think, but it needs to be fairly fast...
once I can get code out of a sample chip I will look at the more expensive ECU pcb's
Back in the old days it was acid and lifting lids.. I hope this one is a little less dangerous..
This is just a place to document, where I am and if I succeed.
But I will post my findings good or bad Smiley  


like this
https://store.siqma.com/stm8s003f3p6.html
oh this is not an advert delete link if not seen as helpful.. !
« Last Edit: February 08, 2021, 09:43:40 21:43 by David_1 » Logged
David_1
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« Reply #1 on: February 09, 2021, 09:29:11 21:29 »

https://www.ebay.co.uk/itm/4-Digital-LED-Blue-Tachometer-RPM-Speed-Meter-Hall-Proximity-Switch-Sensor-NPN/313333175769?hash=item48f41cd5d9:g:1IEAAOSw0iRfzecv

So I now have bought three of these all contain the stm8s003f3 ... the W1209 seems to be made with something else !
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pickit2
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« Reply #2 on: February 09, 2021, 11:19:43 23:19 »

the price has gone up double to what I paid, but that was before Brexit. they do have SWIN conn.
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David_1
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« Reply #3 on: February 12, 2021, 03:31:23 03:31 »

https://www.aliexpress.com/item/4000996539208.html?spm=a2g0s.9042311.0.0.22894c4dSa4yMx

arrived but I payed 52 pence each... prices change so quick LOL
anyway I got 8 boards.. Now building glitch device.. will post again when I have news... wish me luck LOL
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