Hi,
I've just bought a Nema 17 (1.8A - link) and a Nema 23 (2.8A - link)
To be able to test and get to know them a bit. My question is, which stepper motor drivers would you recommend?
You need stepper drivers that can comfortably supply the current required by your motors. A Pololu DRV8825 should be suitable for the 1.8A motor but you would need a driver that could manage 3.5A or 4A for the 2.8A motor. Unfortunately that moves you out of the hobby price range. If you just want to buy a high current driver you will be able to use it with the smaller motor if its output current can be limited to 1.8A
I suggest you Google for 4amp stepper driver. Gecko is the expensive brand. Leadshine is a cheaper brand.
Do not be tempted to buy a simple dual h-bridge that is primarily intended for driving DC motors.
...R
Stepper Motor Basics
Hi,
Are any of the two below good alternatives for the Nema 32 stepper motor?
9.5 USD (link)
6.8 USD (link)
I can't read the text in that link. I saw 4.5A and if that means it can provide 4.5 amps it should probably be OK.
...R
Robin2:
I can't read the text in that link. I saw 4.5A and if that means it can provide 4.5 amps it should probably be OK....R
Sorry, just corrected the links above. Also added a second cheaper alternative.
I understand I will also need a power supply. Any recommendations?
In general a higher voltage power supply is better - but make sure it is within the acceptable range for the stepper driver.
If you calculate how many watts the motor needs (coil current squared * resistance I2R) then your power supply should probably provide about twice that to allow for inefficiencies. Err on the generous side.
...R