How to Make 400Watt Brushless Mini Sumo

This instructable is 18+ category in contest and will show you how to make a Mini sumo using brushless motors and brushless ESC's:



First of all, this project was a true challenge for me to fit all componenets in 10x10 cm projection area and not exceeding the 500gr weight limit. Because of its speed and power I call it Mach 1.0, pretty cool name huh? :)

Weight is an another issue when it comes to mini-sumo's. Every component used in project are precisley weighed before adding them to bot.

There is no gearbox on motors unlike nearly all of the entarants in robot contests do. That makes this bot unique and extraordinary.
Anyway this is enough for praising part, let's get it started.

For more info you can take a look at my blog: www.ceyhunderinbogaz.com

Step 1: Parts and Tools

Making the bot was easy, hardest part was finding the money and time for this project.

When it comes to Brushless technology, you need a thick wallet with nice green papers in it.

Luckily our Chinese friends working hard to make this parts cheaper every day.
PARTS:

2x Turnigy 35AMP CAR ESC

2x NTM 910KV outrunner Brushless motor

1x Turnigy Nano-tech 1300mAh 25-50c Li-po

1x Arduino Duemilanove

1x Laser cutted Bot frame

2x Ultrasonic Sensors for opponent sensing

2x QRD1114 contrast sensors

Total cost is approximately 150$
 

Comments

[veckoff]

Excellent design, congratulations, will be my next project,thanks for the tutorial

[ramicaza]

or could I just connect the ground and signal to the esc?

[ramicaza]

if I have a an esc that also powers the receiver, wouldn't this damage the arduino? what could I do to prevent this?

[Gilius]

Are those type of brushless motors AC or DC?

[TedRobotBuilder]

Do you have any video of it fighting other bots? Would be cool to see! XD

[bld]

How fast is this minisumo robot?
The dohyo has 77cm diamter, how much time it takes to cross the dohyo...?

[fluxuss]

I didn't use a chronometer but it doesn't take more time than closing your eyelids :)
Main problem is stability, too much power for a minisumo :S

[bld]

I think you need very fast sensors, otherwise the robot can easily go out of the ring.

[frank26080115]

That's a clever way of using outrunners!

[fluxuss]

Thanks for the compliment :)