I’m probably doing something wrong here, dont shoot me (yet)
I’m trying to communicate through Termite with the OEM module.
Connected the TX and RX to DB9 2 and 3
Power up with and without the heater ground connected
Termite Settings as per manual
I do get some weird data back, but nothing usefull.
What am I missing, I want to change CAN ids so i can use multiple in parallel.
USB-serial cable has a prolific driver, chipset unknown to me.
Can you post a picture or link of the USB serial cable you are using?
You need something like this, Amazon.com
I have said cable, wired the Rx an Tx to the corresponding pins of the cable, no comms to termite. Sorry for the hassle, but a document about this would be nice.
3 connections must be made, TX, RX, and ground (use the same ground as the Spartan 3 electronics ground)
If it still does not work then swap Rx and Tx and try again.
With garbled output I always check serial cable ground (as Alan mentioned) and baud rate. It’s usually from bad baud rate. Make sure you’re running 9600 8-N-1.
Thanks for the replies and info
It worked, had to reverse the Rx/Tx and hook up the electronics ground to the TTL adapter.
Much appreciated
Hi Alan. On the Spartan 3 Lite OEM, sending new ASCII commands must be done in the bootloader? With the Flasher software?.. Can you enlighten me on this subject please? Thanks.
Hello everyone.
I’m considering to buy 2 Spatran OEM light to use in my 2.7T V6 engine. Is there any possibility to read both banks with one USB serial converter to read parameters of both sensors at the same time to see them simultaneously in Torque Pro app, or do I need to make some esp32 board to join signals and sends all params to phone 
Thank you in advance
Pawel
There is not way to read 2 units with a single USB serial converter.
