How are going to home the stepper? Then control it? Servos are very easy and less complex to code plus wire there is only one signal wire. You only need a $5 dollar servo for this. Its just moving a butterfly plate there is zero load it has to move.
These kits are not that expensive anymore
This the AEM generic brand version. Amazon.com: Wideband UEGO Air/Fuel Ratio Gauge 52mm (2-1/16”) with 4.9 LSU Sensor, Digital AFR Controller Gauge, Wideband O2 Control Sensor kit | 0-5V Analog Output (10-20 AFR Range) : Automotive
Yeah I don’t think cost is a huge factor anymore. Even a replacement O2 sensor is at most $80, and they’ll last for years unless you’re burning oil or something else that would poison the sensor.
I got the same wideband kit.
I like this topic.
Many of us are or have been tinkering with more or less unique systems.
Similar as gasifiers, I enjoy each of those idea’s.
For simplicity, it would not be easier to bypass those AEM sets , see Matt Ryders achievements, I play with those as well.
So far I try to keep it KISS by using the DBW valve, easy to be found at a scrap yard, an AEM set and a basic arduino setup.
Add some sensors from the gas pedal, and you can ref the settings to: WOT/ go rich for acceleration, middle for Cruising/ at perfect AFR, and at zero throttle go lean .
Just my 2 cents and coz i have a lot of used/unused gizmo’s around to play with…
@AndreasTs
I am a little lazy like, allow me to ask for detail about Servo Tester Module .
@Matt Maybe i am able to do things different, but by no means able to do it better than you are doing it.
Still am and will always be an admirer / fan of your work.
@k_vanlooken I am also still experimenting. I agree that Matt has done an excellent job. I am also looking for an easy approach. I am utilizing ChatGPT AI to get some answers. As soon as my theory works, then I will post something more solid.
Kalispera Andreas…
Greece… I have many Greek friends in my past, however never had the chance to go there…
Looking forward to see more of your progresses.
I will try to post some more actual builds soon i hope…