Let's Make Robots!

Lil' Tanky, yet another micro sumo bot

FrankNeon's picture
It tracks its opponent and tries to push it out of the ring, while also trying to stay inside the ring itself
Cost to build: 
$50
Time to build: 
20 hours
Weight: 
110 grams
AttachmentSize
Sumo_BotCode.pde2.64 KB
SumoBits.zip21.87 KB

While planning the Boise Bot Comp this year, we decided as a new event to try our hands at the micro level sumo and see what we could make. Initial thoughts were to go very minimalist with the hardware, but after thinking about it, I decided to try and see how much circuitry I could pack into a 50mm cube.

    I designed and printed the chassis and wheels on a Reprap, I need to make some changes there, but version 1 turned out to be workable in time for the competition, with some dremeling that is. I still need to calibrate the line sensors a bit more as the bot will fly out of the ring about 20% of the time. Gotta figure out how to drop some weight too, but I think landing at 110 grams was a good start. I managed to fit everything inside of parameters, so I'm happy.

 

For this project I used:

-Arduino Nano

- 2ea. solarbotics baby GM2's

- DAGU IR compound Eye

-2ea, QRD1114 IR Sensors

-Hobbyzone HBZ 1017 Mini Cub 7.4v 300mAh LiPo

 

Schematic:


 

 

UPDATE 10.10.11: Added a Sumobits.zip, Stl files of the chassis and wheels..Still a work in progress, got some photos today and am trying to find time to edit them into coherence.

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BotFIN's picture
Wery cool, i make picaxe version
MetalmonkeeLad's picture

it looks cute but i won't say that because it sounds girlie! so i'll say it's cool!

FrankNeon's picture

...because if Lil' Tanky heard you say that his lil' gear motors would start growling and he'd start gnashing ferociously on a dinner napkin or something and rip it to shreds!

TinHead's picture

Nice man real nice :)

PaulJD's picture

wow, thats a lot of bot in a little box.

why do you want to drop weight?  I thought sumo's wanted to be heavy to avoid being pushed around, and to have mass when pushing the other guy.

I agree with Danny, that would be a great little kit to buy.

great job!

FrankNeon's picture

If you go by the Robogames rules, the max weight of micro sumo bots is 100g.  At our competition we gave it a little leeway in order to be able to show the concept to people.

I've been working on cleaning up the design. It's nice to have other people's eyes on it for feedback.

Dunno about a kit, I guess I'll look into it, but if members of LMR can collaborate, we can make this style bot the best it can be!

Dannyface's picture

if it were akit i would buy it

FrankNeon's picture

I'll post the things I used and you won't have to wait for a kit!

TinHead's picture

Clear shiny pictures and a video too :)

STL?

FrankNeon's picture

Agreed, I'll replace with some better photos.

STL is kind of the industry standard file to print on a Reprap with.