I bought 5 identical 12V drill DC motors. First thing I did was to measure (for one of them):
- the current consumption without any load: 0.16A
- the inrush current at turning the motor on: 1.5A
- the stall current: 1.5A (the lab power supply showed 2A once)
I plan to use 5 of these motors to make a tool for drilling 5 equally spaced holes in a 3mm thick wood. I have a DC power supply (12V, 10A) which I intend to connect them to. The diameter of the drill collet, which will be used is 2.5mm. The pieces of the wood, which I'll be drilling holes into, are part of a honeycomb frame (2 pieces per frame, 5 holes per piece).
My question are:
- can I connect them directly to the power supply and activate them using a bistable switch (while using flyback diodes)?
- or should I use an arduino, 5 MOSFETS, flyback diodes (I have a lot of 1N4007) to slowly (with PWM) start each one?