RoboSavvy Forum

Has anyone used a Sharp distance Sensor (GP2D12)?

2011-11-15T19:01:54+01:00

Sorry to bring back a long lost post but I just got two of these and seeing as my programing skills are at a novice level I am having difficulty understanding the code provided with the instruction sheet. Anyway here is what I do not understand.

Code:: Gp2d12_val = 6787 / Gp2d12_val

Why is the value equal to 6787 being divided by the value?

Code:: IF Gp2d12_val > 100 THEN Gp2d12_val = 0 ‘limit

Wait,what?

I want to calculate precise values but I am currently way to tired to figure this out, any assistance is much appreciated.

Statistics: Posted by serithseraki — Tue Nov 15, 2011 7:01 pm

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-03-01T04:04:37+01:00

Here's my Robonova reacting to an object placed in various locations around him, with the more efficient arm moves to take front and back sensor readings. He scans every few seconds. I messed up which side to attack when he turns to react to a threat from behind, but you get the idea. I added a couple of his built in sound effects at the end, too:

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Statistics: Posted by beermat — Thu Mar 01, 2007 4:04 am

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-03-01T01:18:17+01:00

Sure, engineer, what do you want me to share? I'll post a video if it all looks good, and if anyone wants to see the code - which I hate the look of compared to stuff in a 'real' language, but hey, I guess it is RoboBASIC, we have to work with the tools we are given - I can do that, too.

Statistics: Posted by beermat — Thu Mar 01, 2007 1:18 am

tried this

2007-02-28T15:39:34+01:00

WOW beermatt!! just do a backflip into it, that should discourage whatever it is ,especialy a cpt. crunch box, seriously, what a job, keep it up. And share some of the stuff so the rest of us can try to keep up.way to go

Statistics: Posted by engineer — Wed Feb 28, 2007 3:39 pm

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-28T04:55:58+01:00

No idea, lampcov - some on here might have a sense of what works with KHR and Manoi, but you might be better posting on those forums and cross referencing here for advice?

Sooo, I've programmed my 'bot to have 3 toggleable sensor modes (off, left and right only, or flap-arms-around-and-take-6-readings), and I've done the same for reaction modes (defensive, passive, aggressive), all controllable from the remote. In defensive mode, he'll move away from something 'in range'. In passive, he'll speak out loud the distance (really, a debug mode for me), and in agressive, he'll attack if something is 'in range'. I've got the 'in range' adjustable up and down in centimeters via the remote, but 12cm seems to work well as the no-go zone.

I've got attack moves for front left, front right, left, and right, but not if anything is detected on his rear left or rear right. Anyone got any suggestions for an attack move for something detected behind? Hard to reach around with his arms, and turning around is too slow by far, so if anyone has any ideas, that'd be great!

I've now got over 70 commands programmed into the remote, now, too; have to keep a spreadsheet of them to remember them all!

Statistics: Posted by beermat — Wed Feb 28, 2007 4:55 am

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-26T15:33:55+01:00

Hey guys- Very cool stuff...I was wondering if anyone knew what the possibilties would be for integrating this type of sensor on to a RCB-3 for the KHR and Manoi bots....

I'm still way too green to have any idea what the work would take or if it's even a possibility.

Marc

Statistics: Posted by lampcov — Mon Feb 26, 2007 3:33 pm

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-26T06:11:55+01:00

That is extremely cool. Not far from being able to have autonomous battles.
I also messed with sonar and it was hit or miss but I think if think if you integrate both the sonar and IR returns you can get very accurate, unambiguous ranges.

Statistics: Posted by subpilot — Mon Feb 26, 2007 6:11 am

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-26T04:46:26+01:00

Thanks! (and great work on Bing 3, BTW - following your progress with much interest!)

Actually, I just realized the moves in the video are inefficient, doing front left, then front right, then rear left, then rear right. For each one, I added a 250ms pause to let the arm rest in place before reading the sensor. I originally did it an arm at a time to avoid clashing arms, but now I have changed it to read front left / rear right simultaneously, and then rear left / front right simultaneously. Much smoother, and a much faster way (half the time) to get a positional location on the enemy from 6 key spots with 2 sensors

Statistics: Posted by beermat — Mon Feb 26, 2007 4:46 am

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-26T04:03:39+01:00

Ha, that is excellent!

Statistics: Posted by DerekZahn — Mon Feb 26, 2007 4:03 am

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-26T04:00:17+01:00

Yeah, the sharp sensor is a lot better than the sonar (I played around with the sonar for a while), and it is also more accurate at measuring the distance of an object.

Check out the video below - my Robonova moves his arms around and takes 6 sensor readings on his left, right, front left, front right, rear left and rear right, and then verbally reports (via the Quadravox chip hack) the location where it detected the closest object, if it found any at all within range. Audios a bit low, I'm afraid, so you might need to increase your volume:

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Statistics: Posted by beermat — Mon Feb 26, 2007 4:00 am

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-25T23:20:07+01:00

Nice One lol

After I tried this http://robosavvy.com/forum/viewtopic.php?t=166&highlight=spare I went down the Sharp sensor route and have to confess it was a lot more successful than the sonar

Pev

Statistics: Posted by Pev — Sun Feb 25, 2007 11:20 pm

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-25T23:09:44+01:00

I'm now working on a set of arm moves that allows my RN to take a set of readings all around - left, right, front-left, front-right, back-left and back-right - and then determine which reading detected the closest object......

Statistics: Posted by beermat — Sun Feb 25, 2007 11:09 pm

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-25T22:54:24+01:00

Fantastic, I'll have to play around with a pair of them myself

Statistics: Posted by Orac — Sun Feb 25, 2007 10:54 pm

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-26T00:55:41+01:00

Been playing around with the Sharp GP2D12 myself. I attached one to each arm, and programmed my RN to turn his head to look at anything 12-25cm away, on either side. Anything closer than 12cm, it attacks. If something is detected on both sides, RN will turn his head toward / attack the closest of the two objects. Here's the video. No Capn Crunch cardboard boxes were harmed in the making of this video:

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Statistics: Posted by beermat — Sun Feb 25, 2007 10:11 pm

Has anyone used a Sharp distance Sensor (GP2D12)?

2007-02-16T08:55:27+01:00

If you just wanty it to loop continually you could just add a goto at the end like this :

Read_gp2d12:
MUSIC "FEDC"
Gp2d12_val = AD (6)
IF Gp2d12_val < 4 THEN Gp2d12_val = 4 'min
Gp2d12_val = Gp2d12_val - 3
Gp2d12_val = 6787 / Gp2d12_val
IF Gp2d12_val > 100 THEN Gp2d12_val = 0 'limit
IF Gp2d12_val >= 0 AND Gp2d12_val <= 24 THEN GOTO forward_punch
IF Gp2d12_val >= 25 AND Gp2d12_val <= 49 THEN GOTO ma_test1
IF Gp2d12_val >= 50 AND Gp2d12_val <= 74 THEN GOTO bow_pose
IF Gp2d12_val >= 75 AND Gp2d12_val <= 99 THEN GOTO Dance_one

Goto Read_gp2d12
RETURN

That would mean that once you entered the routine you'd never leave it....

Pev

Statistics: Posted by Pev — Fri Feb 16, 2007 8:55 am