Motor Speed Controller DIY

I was in need of a motor speed controller in one of my diy projects. Even though I already had purchased a PWM motor controller module lately but I think this won't fit and is overkill for this specific project. Then suddenly I realize, why not making my diy version of the said controller making use of some scrap electronics parts. In this video I made a low power motor controller driven by a single MOSFET that I had taken from old computer motherboard. It is controlled using a PWM IC 7500B or TL494 through 5K potentiometer. If you're interested in making this low power BDC motor controller, I am not liming you in using the same parts as what I did. Some parts might not be available in your local stores lets say for example the MOSFET. You can replace it with another POWER N-MOSFET if you want as long as it is SMD. Same also as diode D1, you can replace it with any high speed diode. You can use TL494 or 7500 IC's and you can find them from old generic computer power supply. The C945 and A733 transistors were also taken from old computer PSU and random electronics boards. Download schematic and layout: https://drive.google.com/file/d/1EIJ31p12os1gh7mvrZOhEh7D1waTNMVI DIY BDC Motor Speed Controller quick specs: ✓22KHz Frequency (Above the audible noise created from using up to 20Kz frequency range) ✓up to 95% duty cycle ✓Low Power (Not intended for High power BDC Motors) ✓10-25V Power Supply Range I use this motor controller for my etching machine. Link: https://youtu.be/3v8naf976o8 Since it is a PWM controller, I also tested it with 12V COB LED 50W as a dimmer. It works as expected in varying the brightness levels down to 0% brightness. If you like my content, that means we share the same interests. I invite you to subscribe to my channel for more DIY projects. Feel free to leave a comment. 😀 Music Background: from youtube library Patrick Patrikios - Touch Patrick Patrikios - Thinking of Us