Hi, Is there anyone in the VHS community that can help me build a speed controller for a tiny motor. I have a project in mind. I am just looking for a mentor, someone that can advise and direct me on practical electronics.
My knowledge of electronics is extremely limited but I am very keen to learn.
If you can reply with a description of the motor you wish to control ( Part number, pictures, etc.), it will ease the narrowing down an affordable off the shelf controller for your project.
I am sorry for the late reply, I missed your reply.
The motor is tiny it’s from a rc mini matchbox car. I want to take the motor and the 3.7v battery and put it into an IKEA train. It will need to be slowed down a lot but also keep the toque. Eventually I wanted to put it on tracks and have it drive and around and up a Christmas tree while pulling some carages.
There are two issues. One the existing speed control PCB Is too big for the cavity of the IKEA train (which I 3D printed). The IKEA Train cavity is 22mm x 58mm. And the other issue is the motors spin way too fast.
I am doing the best I can learning about electronics by myself with a breadboard and a 555 timer, because I think I might have to make something custom to fit the cavity.
* I would suggest using a worm gear To interface the motor to the drive train (wheels), As this gives the best solution for speed reduction and increased torque.
The worm would replace the gear currently On the motor shaft, and the worm wheel would be what drives the actual train tires. We can use 3D Modeling software to do a custom prototype specifically for your project, and then 3D print the parts.
* I have a lot of experience using KiCAD to create printed circuit boards. You will have to figure out what your ideal circuit board dimensions are for the train, Throw your 555 timer circuit into a schematic, And hope you can route your PCB with (likely) Surface mount parts.
? I was Curious as to the means you expect to control the motor speed with… Just a small variable resistor or potentiometer, Somewhere on the train at the back… a dial you can just roll or turn… Could a wireless, Off-the-shelf microcontroller somehow fit in there so The motor speed could be remote controlled…
Overall, what you’re trying to accomplish is technically sophisticated and challenging. In theory, it’s a simple enough project, but in practice, there’s going to be some high precision 3D printed parts and at least one custom PCB that will have to be made from scratch for this project to be successful.
