puff wrote:one more idea. what if we make a line in engine config, which would determine if it it would be 4-pin or step-dir control?
do you know a person who would make the 4-wire implementation? because trust me: once I have one implementation and it works, it would be hard to convince me to make another one
this would be me may be DaWaN
the thing is i got l293 (SN754410) - which is the power contour. I was very happy to know you started implementation of stepper control (no need to build PWM to stepper converter). To avoid purchasing that $20 board, I was researching some cheaper options and found solution based on 5 Russian chips When discussing various options with forum people, all of them were convincing me do that in firmware, rather than in hardware, claiming that any extra circuitry adds complexity to the overall solution.
Just looking around after being gone for a long while recuperating.
On FCA (Chrysler vehicles) the idle stepper circuit becomes the ETC circuit on throttle by wire ECU's. It does double duty as both the stepper motor and the throttle body motor use the same H bridge. Just a FYI in case this project moves forward with drive by throttle control someday.
С 4-проводным управлением можно использовать шаговый двигатель или же электрическую дроссельную заслонку. При одной и той же печатной плате покрываются потребности обоих типов дроссельной заслонки. Это бы в конечном итоге сэкономило деньги.
Google.Translate: With 4-wire control, you can use a stepper motor or an electric throttle. At the same printed circuit board covers the needs of both types of throttle. This would ultimately save money.
I believe this one would work with rusEfi as long as you have the A4988 module - you would connect only four wires and simply leave two wires unconnected.
Hello, need instruction to connect the stepper board to stm.
I have these pins:
gnd-»gnd-ok
vdd-»5v-ok
1A,2A,1B.2B-»motor-ok
vmot? need? my motor only have 4 wires (2 coils) don´t need this pin right?
enable(rusefi enable pin)? which pin?
MS1?
MS2?
MS3?
Reset-»sleep-ok
step?
direction?