[Lab] ORE Bots

Paul & Andrea Mumby themumbys at gmail.com
Tue May 17 23:18:35 EDT 2011

Well just ran into some problems tonight... I think I need some filtering
caps on my sensors... My range finder is calibrated, but doing very strange

Also my line followers I setup to be polled by the digital io out pins on
the arduino (wanted to keep the i2c port free, only leaving me 4 analog in
ports, so I wired 3 of them directly, and setup 5 more as polled inputs,
using a digital IO to power the vcc on the sensor, and reading back the
output... But either the digital out isn't able to source the current for
the sensor, or I suspect the sensors wired to ground without a vcc are
acting as a pulldown, basically pulling the output to zero regardless of
which one is energized...

I might have to add an actual multiplexer to my circuit...

I'll bring the bot in regardless, and with some tuning might be able to get
it in the ring, but I might have been a bit premature with my "challenge"

Although any tips/pointers would be greatly appreciated lol... I'm kind of
rushing this together and I'm suffering for it now. I'll bring along a paper
copy of the schematic as well in case that helps.

- Paul

On Tue, May 17, 2011 at 10:38 PM, Aaron Ramsey <aaron at ottawarobotics.org>wrote:

>  I wouldn't worry.... my new robot doesn't have much code in it yet and I'm
> drastically underweight so it should be a good match-up.
> Aaron
> On 11-05-17 6:23 PM, Paul & Andrea Mumby wrote:
> Awesome :) prepare to do some winning! ;) lol
>  (I barely got my sensors working yesterday, and my range finder is still
> badly unrefined) lol... but it will be fun either way.
>  Also I have yet to add any traction to my tracks... (planning on
> rubberizing them, but for now elastic bands will have to do which likely
> won't work for long) lol
>  this should be amusing (and a great first round test) :)
>  - Paul
> On Tue, May 17, 2011 at 5:43 PM, Aaron Ramsey <aaron at ottawarobotics.org>wrote:
>>  I'll bring some of mine as well as the ring.
>>  Aaron
>> On 2011-05-17, at 12:23 PM, "Paul & Andrea Mumby" <themumbys at gmail.com>
>> wrote:
>>     Hey, I'm getting close to a working bot for my ORE Robot Games Sumo
>> entry (http://ottawarobotics.org/games2011/). I was wondering if any
>> other Lab members have bots (either for this or past competitions) I could
>> bring mine in tomorrow night, and have a go ;) (I'll loose horribly as it's
>> not complete by any means yet, but can be cool to try out against some other
>> bots to see where/what I need to improve).
>>  If anyone has a Sumo ring, that would be cool too.
>>  - Paul
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