Buy an Axon, Axon II, or Axon Mote and build a great robot, while helping to support SoR.
0 Members and 1 Guest are viewing this topic.
I'm assuming I'll need two different types of batteries, one 12v to power the solenoids (they don't need to pull back very much), and one 6v (which I already have) for the Axon.
Can someone help me decide what else I need? Any help is much appreciated.
Are you going to turn them on and off, or PWM the coil?If PWM, what frequency?
Are you sure you can get by with 12V drive? They are rated 24v.How often will you activate them and for how long?
@24V they need around 120mA, so a transistor like the BC337 will do nicely (or a 2N2222 if that's easier to get a hold on). Further you need 2 or 3 resistors (depending on whether the solenoids can be powered while the controller is off?) and a diode to protect the transistor....Why not go with weaker solenoids (and made for 12V) if that's what you need?
I can draw you a schematic on the drivers if you can read it?
If it's true that they can run acceptably at 12V (and that's a big if) and if they only need a short pull with some force (and then need less force to hold them), it can actually be run from 6V with a fairly simple circuit
I'm actually using them for a musical instrument. It's sort of like a player piano, only a xylophone instead. I only need the solenoids to move enough to create a tone out of the xylophone. (I'm an art student and this is part of a sculpture that has to make sound)
Because it's a sculpture, the aesthetics are as important, if not more important than the functionality,
which is why I was thinking solenoids, but yeah servos would probably be better sound-wise.
And I hadn't looked closely at the price of the ones I posted. WAY too expensive.