For an electro-mechanical designer, motors are a key component. Being able to move stuff in the physical world at high speed and precision makes modern products feasible. For a long time brushed, DC Motors were the only viable option, sometimes coupled to a gearbox and or encoder. Lately, more and more products began using brushless motors which also means cheaply available overstock.
You can now buy a powerful and fast brushless motor, including controller and and encoder for precision feedback for about €5 including shipping(!).
I just had to try these out. Attached is the code for open-loop control. I might implement closed-loop some time in the future as well, so this becomes even more powerful and precise.
Like this? You might be interested in my latest project. It's a desk light made completely from a single sheet of printed circuit board. Check it out:
