stick a scope across the motor, I have a sneaking suspicion they could be low inductance/ high voltage spike models.
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Mechanical engineers build weapons, civil engineers build targets

There is something about putting 20A into a battery which just seems excessive.



I have two pairs of these for charging @ robogames.

I have also written a bit of new code for the ESCs so shall see how that goes. Does anyone know if the integrated GCC compiler in the new AVR Studio 6 automatically puts CLI/SEI in the interrupts? I am 90% sure AVR-LIB did but this could cause heaps of issues for the controller if its switching multiple fets on different bridges. One switch at the wrong time and you leave a single bridge carrying all the current for 2ms and that could be bad.

Steve
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Steven Martin
Twisted Constructions
http://www.botbitz.com

Almost done....



47.2KG at the moment, with a few panels to add and a few things to be lightened up to make weight. If the uprights are exchanged for aluminium, we can get the weight down to 42.0KG
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https://www.halfdonethings.com/

Pretty, and well ventilated
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

looks very cool guys....those cavities might catch spinners though?

What will its shell be made from... biz?
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Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Chassis is to be made from 8/6/4mm Bisalloy or Hardox 500.

The ventilation holes might be easier for spinners to catch, but 6mm steel isn't going to survive Last Rites anyway, so it's a mute point. We are just going to pray we can feed the 8mm thick wedge into his weapon instead if we end up meeting him.
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https://www.halfdonethings.com/

*moot* point.

Looks like a neat design for a very lightweight wedge ant frame too.
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

god do you know how hard it was not to correct that, thank you! ;->
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Mechanical engineers build weapons, civil engineers build targets

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https://www.halfdonethings.com/

well actually its not a correction of grammar, its a correction of semantics.
to be pedantic
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Mechanical engineers build weapons, civil engineers build targets

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https://www.halfdonethings.com/

hehehehe
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<Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls

So did you find out what went wrong with the robot in your drive test?
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Miles Blow - Julie Pitts
www.mulesfilm.com.au
www.wombokforest.com.au

-Pickasso- Vivid Sportsman champion 2015

Well the speed controllers. But I still am not sure I have a 100% fix yet.

Steve
_________________
Steven Martin
Twisted Constructions
http://www.botbitz.com

Hmmm.

Watch in High Def and see the amps needle.
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Steven Martin
Twisted Constructions
http://www.botbitz.com