Let's Make Robots!

ScannerTank

voodoobot's picture
sits in one spot and does nothing for the moment
Cost to build: 
$100
Time to build: 
6 hours
Weight: 
2 grams

Basically this tank was gutted and is being rebuilt with sensors and a new brain. I've posted info on this tank and how cheap it was to aquire, so now this is going to be the actual project page.

I'm currently still working on the dual hbridge  which will be controlled by two of the pwm's of the arduino. I'll be using a 14m and 8m for the sensors and communications array.

From the image I've posted, I have the gp2d10 up front for immediate front detection. This has been glue'd on. The ping senosr has also been mounted and this should be the final location. I have played around with different servo postions and will come up with a final location hopefully soon. There was a mic that used to be where the ping is but I removed that.The ir beacon sensor will be mounted right behind the ping sensor which it also happens to be the perfect height for the sensor and beacons. If I can get my hands on one for cheap, I'll be adding a wiimoteir sensor to assist in the locating of the ir beacons so that I can do a recode of my ir setup and also remove some unwanted issues that I currently have.

 

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cool

Really like your frame. Can`t wait to see more updates.

TinHead's picture
Nice work so far, the bridge looks pretty solid, why not make a pcb layout?
voodoobot's picture

thanks!

This was only meant to be a one off, and when I started, I thought, how difficult could this really be....lesson learned  :D

Honestly, I'm glad I built it the way I did. I it was a valuable lesson in building and layout planning.

 

voodoobot's picture

Updates:

TankMover(Hbridge)MKII - complete

I finsished working on the dual hbridge and tested the new side. Works like a charm.

Next part is to integrate it into the system design.

Top side

hbridge04_topside_complete.jpg

...and the nightmare side...

hbridge04_bottom_complete.jpg

 only took what seems like an eternity to build...

dent's picture

LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL LOL

awesome!!! but whatever happened to voodoobot :(  

(the robot, i mean)

I think you should call this the VOODOOBOT II 

voodoobot's picture
Voodoobot is still on thw work desk. I'm having to redo the main board due to the setup being underpowered for the motor/driver combo I was using not to mention the lack of room issues I was having. doing something tracked was also easier than trying to 3 point steer something.
OddBot's picture

This looks really nice. I will be interested in seeing how well the beacon finder works as I want to try something similar myself with Mr. Tidy.

What FETs came with the tank? Can you attach the datasheet?

voodoobot's picture

Thanks!

btw, I've posted the code a few weeks back on the scanner if you want to look at it. Actually both scanner and beacon that I currently am using for testing are here.

The scanner works fairly well, I'll see if I can post some video of it in action. though it's just static so not really a true test of how it'll work.

I know one of the fets is a b772, the other is it's compliement, 8 something something...I'll edit this when I get home.

robologist's picture

Interesting explorer bot. Pretty cool idea to re-use the FETs in your own h-bridges, were the datasheets available?

Will the beacon finding be used for a recharge station, or location triagulation or both or something else?