Menticol
Active Member
Hello guys!
I'm building a small CN laser engraver, based solely on old printer scraps. So far is looking like this, but i'm stuck on a point and I wonder if you could give a hand.
![IMG_1458.JPG IMG_1458.JPG](https://www.electro-tech-online.com/data/attachments/56/56192-e864957dfa8d994dce68e79a5f286d6d.jpg)
My goal is driving the stepper motors using some components of an old EPSON printer PCB. Unfortunately I couldn't find the datasheet of the motors controller, SMA7023M.
![IMG_1583.JPG IMG_1583.JPG](https://www.electro-tech-online.com/data/attachments/56/56193-7179636be95782d467d1774f741d0005.jpg)
This is the controller, each branch of 6 wires go to its respective stepper motor.
![IMG_1584.JPG IMG_1584.JPG](https://www.electro-tech-online.com/data/attachments/56/56194-eb084d9dfd8af2991f58e585e4bce1b1.jpg)
The only similar datasheet that I could found was for the SMA7022MU but i'm not sure if it would work.
The markings on the stepper motors are equally obscure.
![IMG_1581.JPG IMG_1581.JPG](https://www.electro-tech-online.com/data/attachments/56/56195-0b540e087a930efd2ca012048ddadb84.jpg)
Another question is, would be possible to simply power the board up and simply injecting external pulses on the adequate microcontroller outputs, faking the microcontroller orders and make stepper motors turn? I like the idea because the board is well built, and already has all the neat molex connectors, protection circuitry etc.
Any advice would be extremely appeciated
I'm building a small CN laser engraver, based solely on old printer scraps. So far is looking like this, but i'm stuck on a point and I wonder if you could give a hand.
![IMG_1458.JPG IMG_1458.JPG](https://www.electro-tech-online.com/data/attachments/56/56192-e864957dfa8d994dce68e79a5f286d6d.jpg)
My goal is driving the stepper motors using some components of an old EPSON printer PCB. Unfortunately I couldn't find the datasheet of the motors controller, SMA7023M.
![IMG_1583.JPG IMG_1583.JPG](https://www.electro-tech-online.com/data/attachments/56/56193-7179636be95782d467d1774f741d0005.jpg)
This is the controller, each branch of 6 wires go to its respective stepper motor.
![IMG_1584.JPG IMG_1584.JPG](https://www.electro-tech-online.com/data/attachments/56/56194-eb084d9dfd8af2991f58e585e4bce1b1.jpg)
The only similar datasheet that I could found was for the SMA7022MU but i'm not sure if it would work.
The markings on the stepper motors are equally obscure.
![IMG_1581.JPG IMG_1581.JPG](https://www.electro-tech-online.com/data/attachments/56/56195-0b540e087a930efd2ca012048ddadb84.jpg)
Another question is, would be possible to simply power the board up and simply injecting external pulses on the adequate microcontroller outputs, faking the microcontroller orders and make stepper motors turn? I like the idea because the board is well built, and already has all the neat molex connectors, protection circuitry etc.
Any advice would be extremely appeciated