How to get different steps out of drive?

Support Motor controllers/drivers and motors
1

I am new to all this so this may be a dumb question.

I am looking to order a couple of the step motor drives to try with an Arduino (trying to build a clock with three motors).

I want to experiment with different steps ( full, half, 1/4, …).

M0 is floating so I gather I can put it to ground or positive voltage to make it high to low …is this right? … or do I need a resistor ?

M1 on the other hand has an internal pull down resistor making it low. How can I get M1 to be high?

Thanks … Mike

2

Hello.

We make a few different stepper driver carrier boards with similar layouts but slightly different operation modes. Which driver boards are you using? If you are unsure, can you post pictures of them?

-Nathan

3

There are several that seem to need the same set-up. Lets say the DRV8834 for example. Looking at the middle of the web page has a table for M0 and M1

M0 can be floating (I believe this is the factory setting) high or low.

So do I need to ground it or connect it directly to positive power or do I need to go through a resistor?

M1 had a pull down resistor built into the board. If I what to use it fore 1/8 steps, I need to make this line high. How do I do this if it has a pull down resistor on it?

Thanks so very much !!!

Mike

4

The mode pins do not necessarily behave the same way on all of our stepper drivers. On the DRV8834, M0 is floating by default and M1 is pulled low by a built in resistor. To change the state of those pins, the you can connect them directly to GND or your logic power supply, though using some resistance (between a few hundred ohms and a few kiloohms) can help reduce the risk of damage if parts of your system are powered separately or the pin is accidentally connected to the wrong thing.

-Nathan