i have a laser engraver board that uses l9110 driver ic to drive cd rom motors but want to use it on a new project which uses Nema 17 stepper motors.
My quest is how to boost the output Of 800mA upto the 2000mA required for the Nema 17,
Any ideas suggestion would be highly appreciated
andi968:
My quest is how to boost the output Of 800mA upto the 2000mA required for the Nema 17,
Don't.
You will almost certainly want to use a much higher voltage as well as the higher current.
Get a suitable stepper motor driver - a Pololu DRV8825 may be suitable but just about. A higher current driver would probably be better if the motor really requires 2 amps.
Post a link to the datasheet for the motor. Nema 17 only describes the size of the front face.
See stepper motor basics.
...R
Robin2:
Don't.You will almost certainly want to use a much higher voltage as well as the higher current.
Get a suitable stepper motor driver - a Pololu DRV8825 may be suitable but just about. A higher current driver would probably be better if the motor really requires 2 amps.
Post a link to the datasheet for the motor. Nema 17 only describes the size of the front face.
See stepper motor basics.
...R
Thanks for reply
Here's a few more specs NEMA 17 Stepper motor - RepRap
I have considered trying the L298N Stepper Dual H Bridge Motor Driver Module Controller Board for Arduino which is more than adequate
andi968:
i have a laser engraver board that uses l9110 driver ic to drive cd rom motors but want to use it on a new project which uses Nema 17 stepper motors.
You can want as much as you like, it isn't going to work. (L9110's or L298's)
Have you bought the motors already, and if so what are they exactly (current, winding
resistance, winding inductance, output torque). How fast do you want to spin them?
What is the application?
MarkT:
You can want as much as you like, it isn't going to work. (L9110's or L298's)Have you bought the motors already, and if so what are they exactly (current, winding
resistance, winding inductance, output torque). How fast do you want to spin them?The motors are some I have laying around and in the past work fine with the L298
They will be moving a 1000mw laser around the X,Y axis at slow speed as accuracy is more important than speed.
My other home built projects use the same motors with Melzi board for my 3d printer and Ramps 1.4 for my CNC.
I have a Arduino V3 CNC shield with steps sticks hanging around which if need be I could use instead with GRBL, But it would be a shame to waste the benbox shield.Below are the specs I can find
A smaller bipolar (4-wire) NEMA17 stepper motor with 200 steps per revolution (1.8 degrees per step). This is not the most powerful NEMA17 motor, but it's a little smaller, with a respectable holding torque of 2600 g·cm. It has a current rating of 1.2 A, which is ideally suited for small drivers such as A4988, as found on Pololu and StepStick driver modules.
Inductance Accuracy: +/-20% Model: XY42STH40-1204A
Dielectric Strength: 500V AC for 1 Minute Rated Voltage: 4V
Max.Radial Force: 28N (20mm from the flange) Phase Current: 1.2A
Max.Adial Force: 10N Form Factor: NEMA17
Temperature Rise: 80 Centigrade Max(rated current,2 phase on) Step Angle: 1.8 Degree
Ambient Temperature: -20 Centigrade to +50 Centigrade Step Angle Accuracy: +/-5%(Full step, noload)
Number of Lead Wire: 4 Resistance Accuracy: +/-10%What is the application?
Laser cutter and engraver
