JAYCAR Speedo Corrector old model

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vp304
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Re: JAYCAR Speedo Corrector old model

Post by vp304 »

It works yehhhhhhh
For anyone else the instructions above are what you need to calibrate it
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antus
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Re: JAYCAR Speedo Corrector old model

Post by antus »

It sounds like your sorted :thumbup:

It looks like these are from a later revision of the same thing. Jumpers appear to be the same at a glance.

Ive added a link to this thread to the FAQ, and I also have these scanned docs I'll attach here for more detail incase they're ever useful to anyone.
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Board1.JPG
User Manual AA0376.pdf
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Jaycar_Corrector.pdf
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Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
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delcowizzid
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Re: JAYCAR Speedo Corrector old model

Post by delcowizzid »

Good stuff guys
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem
vp304
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Re: JAYCAR Speedo Corrector old model

Post by vp304 »

Good stuff thanks antus
Antus is that the newer version of the speedo corrector that people say they have trouble with on vn to vs commodores?
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The1
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Re: JAYCAR Speedo Corrector old model

Post by The1 »

someone sent these to me, i havn't looked at them but might be worth investigating, they have a few different methods and types.

https://www.dakotadigital.com/index.cfm ... /prd57.htm
https://www.dakotadigital.com/index.cfm ... prd916.htm
ejukated
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Re: JAYCAR Speedo Corrector old model

Post by ejukated »

From memory the original design was from a Silicon Chip magazine, you could probably find the calibration procedure in there too
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Re: JAYCAR Speedo Corrector old model

Post by Holden202T »

Page 65 :)
Silicon_Chip_Magazine_2006-12_Dec.pdf
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Holden202T
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Re: JAYCAR Speedo Corrector old model

Post by Holden202T »

After reading this thread and finding the silicon chip article with all the info in it i decided to put together a PCB from it and see if i could get it to work.

so this is basically the jaycar speedo corrector mk2 i believe but condensed onto a smaller double sided PCB to fit into a case that i had previously used for another project, and draw up a pcb shape to fit it.
MicrosoftTeams-image.jpg
so below, the top trace is the signal from an arduino (5v quare wave) being fed into the speedo correctors input wire, and then the one below it is the signal out of the unit.
243277896_541953917102239_2148527982749002974_n.png
Theres a few things i found like part ID's and such that were not right on the PCB and in particular the transistor footprint has two tenths of fuck all gap between the solder pads, so i will update them for future boards, but other than that it works :)

i also managed to find the firmware for the PIC on silicon chips website so the entire process can be replicated!
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Re: JAYCAR Speedo Corrector old model

Post by VX L67 Getrag »

AWESOME WORK!!!! you clever cookie!
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Re: JAYCAR Speedo Corrector old model

Post by immortality »

That's bloody brilliant. Any chance it can also do signal conversion for those who are doing T5 transmission swaps with ecotecs/L67's?
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