Winaldl cable
#WINALDL CABLE SERIAL#
You can buy an ALDL Cable with an OBD1 12 pin connector shell, or OBD2 style 16 pin connector shell, or a cable with just a bare male pin, to plug into your cars female connector serial data pin location (pin M or E or 9 on the diagrams above). What about the zener diode I mentioned? If I put that on the 12V data line would that possibly make a signal compatible with the FT232? I don't know how much that would interfere with the signal. Make sure you buy the correct ALDL cable setup for your car or cars. That's interesting point about greater voltage tolerance with the MAX232 - that might well be relevant. Moates has a 'ALDL Echo Test Program,' which tests your ALDL cable when it is not hooked into vehicle you will have to power up the cable with 12Volts when doing this test. Otherwise its all guesswork, and I think you've tried everything. If anyone buys one of those ALDL Cables with a serial interface, this information may be of interest, if stuff happens. If you want to debug the circuit you have i'd suggest getting some kind of a scope on to it so you can see the signals across the circuit and see whats going on. Once done it May have you restart the laptop. All I do know is that the max232 gives you the most voltage tolerances, and Ive used that style with success. Plug in the cable and when you see the icon at the bottom of the screen telling you its loading the driver, click on it and it will give you the status and will tell you what and to which comport it is loading. The data is presented in a way that will help when tuning a car after engine modifications. The sight you linked also talks about 5v and 12v circuits but I dont know anything about that. Obd1 Aldl Usb Cable WinALDL - 160 baud ALDL reader WinALDL - 160 baud ALDL reader WinALDL is a program that reads the ALDL data from some supported ECM types. Not all cars required the 10k, i think the commodore techedge was talking about did not, which is why its not included.
![winaldl cable winaldl cable](https://images.fiero.nl/pffimages/ALDLcable.jpg)
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I'll try using the TxD line as you suggest, and see if that does anything.Īm I right in thinking I can simply wire up to an FT232 in the same way you would a serial port? Can anyone shed any light on the differences between the FT232/245BM and FT232RL? All the data I can find seems to suggest they work the same way, although none of the FTDI utilities seem able to invert the signals on the FT232/245BM, which is a pity.Īntus wrote:This analog circuitry can be a bit hit an miss. Of course, neither of the techedge or winALDL diagrams mention using an FT232 etc, and I'm just assuming I can wire them up the same way. It also doesn't show the 10kohm resistor to the 5V supply from the USB, which I think is needed to operate the transistor? I've tried with and without and neither yielded any data. I'll admit I was slightly suspicious of the techedge information because it doesn't include the 10kohm resistor between pins A and B to trigger the diagnostic mode. Gargano notes that D1, Q1 and R3 are only required if reading 8192 baud, which I'm not so they're omitted from my connector.