Also, make sure you select "Interact" mode. Select the appropriate COM port (showed up as COM4 for my laptop), and select "GM 410B" as the ECU in the software. Wire the Black connector (GND) to the "A" connector on the ALDL block.Ĭonnect USB to laptop, let Windows install the FTDI drivers. Wire the combined TXD and RXD pins to the "M" connector on the ALDL block Wire the TXD and RXD pins together, Green and Yellow.
Many Arduino-targeted cables use 3.3V, which may not be adequate for the TX pin to the 5V logic used in the ECU!) (must be this one, with the FTDI chip to support 8192 baud, and must use 5V TTL levels. Okay everyone, as a public service, I thought I'd do a bit of a write-up on how hooked up to my 1992 LH0-engined car with a <$8 USB cable and no messing around with MAX232's, transistors, resistors, or even soldering.
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