just a thought

[webby]

could u get a servo and take the controller part out and where the motor goes some how add more power to control a 12v motor?


esc----batt----motor ????






or is this stupid

[daliad100]

this + that = Bidirectional ESC

[webby]

what dose that mean?

[daliad100]

The first link is how to get directional control from a servo and some relays.
The second is how to control speed from a servo and a transistor (should really use a mosfet).
Finally is the amalgamation of the two to produce a speed controller that can reverse.

If there's anything specific you don't understand about it don't hesitate to ask.

[webby]

sorry for delay on reply laptop broke -_-

here is what i thought

[harry hills]

servo board's dont like bigger motors than they are desighned to handle

[daliad100]

That design won't work, you can do just do a straight motor swap but you can't really have a particularly big motor on a servo board, only one of similar size or smaller. It'll be fine for fleas, ants and possibly beetles.

Some larger servo's have a separate H Bridge IC in them that can take more voltage than the control electronics so you can over volt them more like so: http://www.teamkiss.com/antweight.html (bottom bit of the page)

To run a bigger motor you need to use relays and/or mosfets/transistors to take the current.

[webby]

ok just tryed motor swap for another small motor and it works!
whats the motors that most ants use? one with the gearbox?

[razerdave]

Yeah, pretty much every antweight uses 12mm gearbox motors like these:

http://www.robotbits.co.uk/motors-gearb ... od_10.html
These are the ones all my robots use. The HP motors are the best of these type of motors, more power that ones of a similar type.

However, if you are on a budget:
http://www.ebay.co.uk/itm/6V-300RPM-Tor ... 3366bf48bd

[webby]

thanks there the ones ive seen