Hi Angus, What you are doing with the controller is basically OK, but you can't reverse the motors with just 2 transistors. You need an H-bridge that is able to reverse the voltage across the motors. You might want to think about one of the ant controller kits form Barello or Robotic Power.
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Australian 2015 Featherweight champion
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what current level are these things pulling?
there are some small H-Bridge chips
~3-5A that may do everything you want pretty cheaply with a PIC or something to drive them
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Mechanical engineers build weapons, civil engineers build targets

Thats not a bad idea, actualy i remember glen talking about them. If someone could help me program a picaxe for controling 2 h-bridge chips and an AUX for weapon i would be very happy!
Seriosly, if someone develops the code for that (i can't imagine it being that hard), I know at least 8 people that would buy it to make an ant!
+ Using a picaxe allows you to use a standard rc reciever! (no hacking crappy rc toys or going INFRA RED like someone i know... )
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Does anyone know an aus source of these h-bridge chips?
Oatley?
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quote:

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or going INFRA RED

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Hmmmm?
http://www.oricomtech.com/chips2.htm
Thats a duel h-bridge and 4 half bridges in the same chip. I'm assuming a half bridge only controls the motor in one direction?
https://www.zagrosrobotics.com/shop/item.asp?itemid=573
Interesting, this might just be do-able...
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800ma is what that 2nd one is speced at is really low current
like *really*
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Mechanical engineers build weapons, civil engineers build targets

Stuff this, i'm just going to hack some servos.
Does anyone know where i can get some futaba reciever plugs? I need them, as the servos have the wrong plugs (they're very old futaba servos, but work nicely). I also think that if i can find myself a cheap cooking blowtorch (the next size step from pencils), with a peizio, i'll buy it and rig up a servo.
shite lightning, better get of the computer!
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my servo leads cost about $7 each, they are really expensive for some reason.
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www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

Whoa pricy...
I'll check out the prices at hobbyco.
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Uh, glen..... methinks you got ripped bigtime...
http://www.hobbyco.com.au/product/show_item.php?plu=PRO5000FJ
$2.60 aint bad, i'll grab some on the weekend.
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I've got some ideas for a proportional speed control for an antweight based around a picaxe chip. If you catch me on msn I'm glad to explain my ideas.
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Ok, i'll talk to you soon. Thanks.
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Found a good 12v battery for my bot, its perfect for a fbs as its real thin.
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=5983187540
Would 700mah be enough to power the weapon motor, hacked servo's and the reciever?
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Hate to dampen your throughts, but that pack sucks royally They are just lo grade AA NiCDs
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