[help needed] The stepper motor is not working

[1204257363@qq.com]

I used rusefi plate throttle with stepper motor on the motorcycle, and set the stepper motor function Dan on the debugging software. The motor can only work one-way and does not return. What is the problem

[AndreyB]

what hardware? please post tune, see http://rusefi.com/s/questions

[1204257363@qq.com]

Firmware μsEFI v20210106@28903) EFI Simp uses 4988 driver

image.png

[AndreyB]

Firmware μsEFI v20210106@28903) EFI Simp uses 4988 driver

what is μsEFI ?

today is end of June of 2022 why January of 2021 firmware?

what is EFI Simp?

can you post your tune and log at https://rusefi.com/online ?

[1204257363@qq.com]

I'm really sorry for the wrong expression. Now the stepper motor problem has been solved by updating the latest firmware. Now I find that the maximum speed limiter can only be 12750RPM, and the maximum speed of my motorcycle carburetor is 18000.

[AndreyB]

that's a defect https://github.com/rusefi/rusefi/issues/4298 give me a couple of days to fix

[AndreyB]

RPM limit fixed now please try latest snapshot version

[1204257363@qq.com]

Tested, OK

[1204257363@qq.com]

Does it support Bluetooth wireless connectivity? USB connection is easy to drop when the engine is working

[AndreyB]

Yes, but it would be worse.

Please start providing much more info. Pictures of hardware, pictures of wiring, etc etc.

[1204257363@qq.com]

The setting of ejection can only be default. Other options will be automatically restored to "Simultaneously" after the ECU is powered off. Other options cannot be saved

[AndreyB]

Please start a build thread with vehicle and hardware photo.

Please use https://rusefi.online to share full tune