Search found 3 matches

by someone972
Mon Mar 25, 2019 2:51 am
Forum: Adapters & Connection
Topic: Modifying an OBDLINK SX USB Adapter for HS/MS-CAN relay managed by RTS
Replies: 29
Views: 28138

Re: Modifying an OBDLINK SX USB Adapter for HS/MS-CAN relay managed by RTS

Took a closer look at the board today. Was able to confirm that the 5 pin unpopulated header next to the OBD port is in fact a PIC programming port for the PIC24HJ128GP502 main chip. The pin that the RTS line is hooked up to is the PGEC2 pin of the chip, so it's likely that the firmware flashing pro...
by someone972
Tue Mar 12, 2019 5:53 pm
Forum: Adapters & Connection
Topic: Modifying an OBDLINK SX USB Adapter for HS/MS-CAN relay managed by RTS
Replies: 29
Views: 28138

Re: Modifying an OBDLINK SX USB Adapter for HS/MS-CAN relay managed by RTS

Hmm, I suppose I could put an oscilloscope on the RTS line and see if it changes state at any time during regular use. Not sure when I'll get around to that though.
by someone972
Wed Mar 06, 2019 7:27 am
Forum: Adapters & Connection
Topic: Modifying an OBDLINK SX USB Adapter for HS/MS-CAN relay managed by RTS
Replies: 29
Views: 28138

Re: Modifying an OBDLINK SX USB Adapter for HS/MS-CAN relay managed by RTS

Has anyone done this RTS mod with the newer revision of the OBDLINK SX board (the red one)? I don't have any of the parts I would need to do the RTS mod, but I was able to hack in a temporary HS/MS switch and communicate over MS-CAN with it. The package of the chip which handles the serial to USB in...