Hello
I want to use multiple vibration motors (from 3 to like 30). I have different groups of motors, so lets say group 1 needs to go on = motor 1, 2, 3 need to go on.
But what I cannot find: Are vibration motors in essence DC motors? Can I use vibration motors on the DC port of a motor shield like this: Overview | Adafruit Motor Shield | Adafruit Learning System ?
Or should I connect id different?
Some vibra motors are simple DC motors with an eccentric weight, others are linear voice-coil types that require an H-bridge to drive them.
You will always need some buffering between the motor and the Arduino I/O pin.
Aha ok.
The adafruit motor shield states:
-4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal shutdown protection, 4.5V to 25V
Should that be enough for either a DC motor or the linear voice-coil types? The ones that I wanna use are those flat types.
The ones that I wanna use are those flat types.
Not really enough detail. If you hold one and tap it and it feels like there's a spring in it, then it's a voice-coil type.
I'd reckon on typically 50 to 100mA per device, but it's easy enough to measure.
Watch out for the voltage drop on the L293s