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Author: Subject: Microsquirt mapping cable
cliftyhanger
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posted on 14/4/25 at 11:56 AM Reply With Quote
Microsquirt mapping cable

I am just looking at the microsquirt I have, but I need to get a mapping cable.
Ideally I want one of these, but shipping from the USA can be "difficult"
https://www.stinger-performance.com/store/usb-serial-2.5mm-audio-microsquirt-pimpx-expansion

(it is the little 2.5mm "headphone type" jack to a USB with built in FTDI etc)

The other alternative is for me to make an adaptor cable with a 2.5mm jack and a serial connector (I am assuming just 3 wires are used) and then use the serial to USB lead I already have. But I cannot find anything about which pins to use on a serial plug. It seems MS is in serious decline?
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obfripper
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posted on 14/4/25 at 01:09 PM Reply With Quote
I'm pretty sure the serial cables for Innovate lambda controllers/dataloggers use the same pinout, they're on eBay for about 20 quid.
They should plug straight into your serial-usb converter and work straight off.
If you want to diy the cable, the left side of the diagram in the link should be correct.

https://forum.efilive.com/attachment.php?attachmentid=3333&d=1211350225
From here:
https://forum.efilive.com/showthread.php?8115-FlashScan-to-LC-1-Serial-Cable-Diagram

Dave
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cliftyhanger
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posted on 14/4/25 at 05:34 PM Reply With Quote
That is really helpful.
The obvious solution is to chop off the MS female jack and fit a male 9 pin connector. Not sure why I didn't think of that before!

quote:
Originally posted by obfripper
I'm pretty sure the serial cables for Innovate lambda controllers/dataloggers use the same pinout, they're on eBay for about 20 quid.
They should plug straight into your serial-usb converter and work straight off.
If you want to diy the cable, the left side of the diagram in the link should be correct.

https://forum.efilive.com/attachment.php?attachmentid=3333&d=1211350225
From here:
https://forum.efilive.com/showthread.php?8115-FlashScan-to-LC-1-Serial-Cable-Diagram

Dave

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