aknovaman

So I have sold hundreds of these and the demand has dropped off so I decided to show you all how to make your own USB programming cable. These can be built for less than $10 total.

All you need is a USB to serial adapter with a FTDI chip on it and a 1000 ohm resistor and a simple glass diode. The USB to serial adapter can be had on ebay. The resistor and diode can be bought at radio shack for cheap.

The build and testing directions are in the vid but I will repeat them here.

Solder the resistor to the diode end without the black stripe. Solder the other end of the resistor to the RX terminal on the USB adapter. Solder the diode other end with the black stripe to the TX terminal in the USB adapter.

Then connect the adapter ground terminal to your car obd port black wire. Connect the resistor/diode to the tan wire on your obd port. It will work with either square and obd2 style port. Just look at the back of the port for wire colors.

Here is a link to the build and test video using data master data logging software.


Enjoy !