28BJY-48 is very popular and cheap stepper motor, and used for many micro computer DIY with Arduino, Raspberry-pi. It also often sold with small motor driver board.
![](https://stellartech.science/wp-content/uploads/2024/01/PXL_20240116_140410910-1-1024x576.jpg)
I want to make telescope focuser, so I made a metal bracket to fix the motor to other metal parts.
![](https://stellartech.science/wp-content/uploads/2024/01/bottom-3.png)
![](https://stellartech.science/wp-content/uploads/2024/01/top-3.png)
![](https://stellartech.science/wp-content/uploads/2024/01/withMotor.jpg)
![](https://stellartech.science/wp-content/uploads/2024/01/PXL_20240116_125044412-1-576x1024.jpg)
![](https://stellartech.science/wp-content/uploads/2024/01/withMotorBack.jpg)
![](https://stellartech.science/wp-content/uploads/2024/01/withMotorSide.jpg)
![](https://stellartech.science/wp-content/uploads/2024/01/図面2-1024x526.png)
Point 1.
I made holes for PCB spacer for “ドライバー基盤付で購入したときについてくる基盤「”X113647 Stepper Motor Driver Board” which is very common to be sold with.
![](https://stellartech.science/wp-content/uploads/2024/01/withAll01.jpg)
![](https://stellartech.science/wp-content/uploads/2024/01/withAll03.jpg)
![](https://stellartech.science/wp-content/uploads/2024/01/withMotor02.jpg)
Point 2.
For generic purpose, I made M5 thread x1, M4 threads x2, and 4mm slot.
![](https://stellartech.science/wp-content/uploads/2024/01/穴.png)
Point 3.
I made M4 thread on the same position as some major product, so the third party item may be able to use for this bracket. I can not guarantee, though.
![](https://stellartech.science/wp-content/uploads/2024/01/compare.png)
I made some extra, and put on eBay.