Glad you got there.

For the sake of curiosity, did you leave the +5V line disconnected? (My adapter wouldn't work without it but it also had an extra levelling stage since I used an RS232 adapter)

Have you got a link as the product code seems to correlate to the FTDI adapter with 3.3V TTL levels but if it works I wouldn't be concerned about that.

 

the 5 volt wire IS NOT connected

as advised by the doc

it makes sense NOT to wire it as if you do ,you are trying to give your computer/laptop extra power it dont want

 

I used a USB to RS232 adapter, then a max232 line adapter to TTL which is why mine needed the 5V to be connected... as that is how the line adapter gets its power.

Well glad you got there with some good advice from the doc, not to power the USB to TTL adapter from the CU port.

 

yes very happy it all works ,getting practice at minute soldering ,dont know how you guys solder those chips

at my age i find it hard to stop shaking while trying to solder tiny wires

 

Thanks for this post.
I got a homemade cable made out of a USB to TTL module and an old PS2 cable I had lying around.
First try was a console cable for a rasp pi. Too cheap didn't work. Second one I tried is a circut board with headers on one side and a usb on the other side. I had a PS2 cable in a box in the closet that I cut off and figured out the wire mapping. The image above verified against our 132/164 CU with a quick voltage check.

In case my experience helps someone:
I connected CU gnd to TTL gnd and CU RX to TTL TX and CU TX to TTL RX and used the carreralib python module. Viola! Lap counter and timer.
carreralib.readthedocs.io/en/latest/

 

Congratulations on getting your interface running. I hadn’t heard of the python Carrera library, I’ve not dabbled in python much at all (did something very basic 20 years ago) but this looks very very interesting, I don’t know how I missed that one. What do you hope to achieve? I’m going to lose sleep on this lol, looks very useful if one can nut it out. Do you plan to run the demo RMS?

 

Track is my 14yr old son's he wanted to have a lap counter but didn't have the cash to buy one yet. For now I think we'll just run the demo on a RaspPi I had lying around.
I may try and get him to build a pygame interface or a wxPython interface to display the data in a graphical interface and use it as teaching tool. For now the demo meets our needs. Hope you enjoy the pythonlib, I do a lot of python and was excited to find it.