Chiped....

[markitect]

https://www.silabs.com/products/mcu/...C8051F0xx.aspx

The dev kit is under $100

someone should scope the signal to confirm its really a DC signal though, wish I had some more free time.

[bearda]

Originally Posted by markitect

https://www.silabs.com/products/mcu/...C8051F0xx.aspx

The dev kit is under $100

someone should scope the signal to confirm its really a DC signal though, wish I had some more free time.

Hmm, that micro doesn't look too bad. I'll see if I can get a sample.

I know that on my Mazda I was able to pull APS voltage from the OBD-II PIDS, and it was a 0-5V DC signal. I'll see if I can hook my laptop up to the Yaris this weekend and confirm that it works that same. By the way, you really don't need a whole engine to test this, just the accelerator pedal.

[CTScott]

Originally Posted by bearda

Hmm, that micro doesn't look too bad. I'll see if I can get a sample.

I know that on my Mazda I was able to pull APS voltage from the OBD-II PIDS, and it was a 0-5V DC signal. I'll see if I can hook my laptop up to the Yaris this weekend and confirm that it works that same. By the way, you really don't need a whole engine to test this, just the accelerator pedal.

The only bad thing about that 8051 based mcu is the amount of support circuitry required. The PICs require far less.

The reason I would like to have a running engine to bench test with, is that I see taking this to the extreme of actually using the microcontroller to even fire the injectors. The injectors are controlled by a PWM signal. For Turbo and SC cars the system could then meter more fuel as required (by tweaking the PWM duty cycle).