Antweight help

[Max]

Ahh, didn't realise that! I guess we'll have to make up a simple circuit to covert the ppm signal from the receiver to the pwm circuit for the motor driver. Obviously wont have room for an arduino but I guess we could design a circuit with an ATMega chip programmed on an arduino then plugged into a smaller custom circuit- that could allow us to introduce some autonomy in the future.

[marto]

Yeh or could just use our 10As as you suggested initially.

[Max]

Too late as already bought those polulu ones! May try to see if we can return them but will be a bit of a pain

[Max]

What capacity 2s lipos do most people use for competitions? One is for a flipper bot and one is a spinner. Looking at the battery we've got it takes up loads of room and weight (http://www.giantshark.co.uk/product/...c-lipo-battery) (almost 40g).
Just don't want to order something too small! The smallest I've found is 120mah which weighs 11g- would this be suitable or can anyone find a smaller one!
Thanks,
Max

[harry hills]

Sounds about right. I run 120-180mah packs in mine.

[Max]

Can anyone provide a link to a smaller esc for a 2wd antweight available in the uk, I've heard the baby oragutan is good but it doesnt seem to connect to a receiver, is this correct?

[razerdave]

In the UK you've only got 3 choices for a 2 channel esc: sabretooth, Baby O or a Pete waller board (for AWS attendee's only). You can attach a receiver to the Baby O but it's a solder job, no RC leads as such. I'll talk to Andy Hibbard or Jim Blunden, they have Baby O speedos, I'll try and get some instructions and a diagram/program.

[Max]

Thanks Dave. Another thing is that we want more speed from our motors as they are a bit slow! We currently have these:
http://www.technobotsonline.com/polo...gearmotor.html
But was thinking about getting some of these ones:
http://www.technobotsonline.com/polo...rmotor-hp.html
For more power, does anyone use these? Do you know if they weigh the same and have same size/ mounting? And can I go for a higher ratio eg 30:1 with 40mm wheels?

Thanks for your help!

[razerdave]

I use the 50:1 HP motors on all my ants; best mix of speed and power on the standard 32mm pololu wheel. 30:1 will be faster but lacking in torque. Here's an idea of the speed and drive you're looking at:

[duff]

30:1 HP motors would be mad on 40mm wheels! Anything over 24mm and you should be using 50:1 in my opinion. Unless you like them really fast.

And the Baby orangutan is a great board, and very cheap. But you need to buy a separate programmer to get it working, and solder all the connecters on for the battery, receiver and 5v reg. But once you've done it once, it's very easy to do more. I use them in all but one of my antweights. It weighs 1.5g and costs £17, so I can't see me using anything else for the foreseeable future.

Here's a guide to programme the baby o. Have a read through, and if you're confident enough, I'd say give it a go.

http://www.pololu.com/docs/0J37