Here’s the setup, with the computer connected to the ECU via the EEPROM circuit on a prototype breadboard. If you do have problems reading and writing from the chip, you have to short the crystal on the board. However the clip doesn’t have a good grip on the SMD chip so I chose to solder wires directly to the leads of the chip. Using a test clip helped a lot during prototyping. Note: This is the same circuit for programming the odometer’s EEPROM: To connect the 8-pin EEPROM chip to the computer you'll either have to solder hook-up wires to the pins or get a Test Clip for onboard programming. The components required are fairly basic, three 4.7K ohm resistors, three 5V zener diodes, and a computer with a serial port. In my case, I made my own, using this EEPROM circuit.
You can either buy a USB programmer from eBay or make your own to communicate to the serial port. This is where you need to get a programmer to connect the chip to your PC.
0 kommentar(er)
