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Trim Pointer Stepper Help

Hi @Karl Clarke

I am trying to get the Trim Pointers to work and seeing odd behavior when I test both of them in MobiFlight. I followed @Ede Banatzke instructions in this post.

www.737diysim.com

MTU base stepper driver holder | The Sim

am I missing something or is there room for 5 drivers but 6 are needed?

If I have 1 motor connected, the stepper moves as expected. When both motors are connected the movement is not smooth. My connections are as follows:

This is what happens when both motors are connected to TB6600.

Here it is with wiring still connected to TB6600 but only 1 stepper is connected. It is smooth as I would expect. This has me stumped.

6 answers0 replies

6 Comments

mladen crvelin

Nov 20, 2022

Hello Folks...

I am struggling to get trim needle steppers to work.

I connected as per the drawings hovewer i found that stepper heats a lot and when testing it turns only in one direction. I connected only one stepper for testing purpose and i use 12v power supply.

I observed also strange noise in the stepper while it doesnt move

Steve Parrilla

Nov 20, 2022

Replying to

is the noise a popping or clicking sound? if so, i think something is jammed and not allowing the stepper to move. You may also try to adjust the DIP settings on the driver. Mine is assembled so i cant tell you what settings i used. sorry

mladen crvelin

Nov 20, 2022

Replying to

As for the sound it is like a boiling sound but I figured that aps were to high so I set to 1A only on the dip board that way stepper douesnt heat anymore so much. As for the mobiflight programing I get stepper to respond to sim values but it turns only in one direction. so for the test purpose i use APU temp just to see and stepper turns one way only regardless weather the value increase or deacrese. what am I doing wrong?

mladen crvelin

Nov 20, 2022

Replying to

I figured this out and found it on the forum. need to change connections from arduino to TB6600 instead 2345 to connect 2435. Thank you for the assistance

Karl Clarke

Sep 16, 2022

Captain, we need more power to the dylithium crystals! Are you using 12v or 24v?

Steve Parrilla

Sep 17, 2022

Replying to

@Karl Clarke 12v I have a 24v power supply that I can try.

Trim Pointer Stepper Help

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