The throttle body, as in the clip, is from a Drive by wire system ( toyota) 60mm diameters.
The easy part is , for now, to actuate it with a PWM and a pot meter.
The goal is do replace the PWM with some small arduino and use the PWM from that as output towards the DBW
The arduino can gets its signal from the AFR set
The output voltage from the AFR , between 2 value’s, will determine the position of the butterfly valve.
All functions have been tested already, separate it is, now to combine all modules.
In the video, the butterfly goes to the zero position from the installed spring.
for the AFT throttle, an adjustable zero spring, both sides of the movement, will hold the valve at position, and the PWM will only adjust the position either way, if needed. ( fine tuning )
At this moment using this setup as mixture control with an pwm and adjustable knob, already works. ( for those who use a cable and want to replace that )
Same for using this as a RPM throttle…
Bottom line: i want to keep this as simple as possible with easy ways to improve or copy build by others.
I plan to stick with 2 standard way’s , as used in car’s already: Either as shown in the movie clip or a simple stepper as on the pictures.