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Step 27:

When the "thing" arrives on the catapult, the ir sensor detects it--then, after a time delay, the spring servo puts tension on the arm, The release servo is actuated and the "thing" flies through the air. The spring servo resets, then the release servo resets.

<p>could you make a Piano Tiles(android an iOS game) robot?</p>
That's as easy as getting a few photoresistors, arduino, and some method of triggering the screen (The design I used a while back involved solenoids). <br>Unfortunately, I never really documented it, and didn't save the code. It only took a grand total of 15 minutes to write, and I was fresh at arduino IDE at the time.<br>(Basically consists of the photo resistor detecting the color change, and the arduino powering the correlating solenoid.)
Seriously thinking of building this for a school funded project (credit will be given where it is due)<br>Could you PM me the exact servos, high torque servo, arduino motor shields, and infrared sensors that you used?
<p>Sweet! You have effectively invented a perpetual 'notion' machine... well done! :D</p>
<p>@silkier: Who will judge the worth of any pursuit? You? Me? MikeTheMaker? There will be three answers.</p>
<p>By far a Great! &quot;Useless Machine&quot;</p><p>Great idea for beginners' learning</p>
<p>Does ever so much better than my dog. I throw, she retrieves but won't bring back, sigh.</p>
<p>I love the narration in the video. Hilarious!</p>
<p>SUPER gona make this some day.</p><p>Keep up the good work.</p>
<p>What a wonderfully pointless device.</p><p>It does start the brainbox wondering if just maybe the thought and time to produce it might have been occupied in a more worthwhile pursuit...but no, what the heck, it's marvellous just as it is.</p>
<p>...yes! A 'Sisyphus' machine! Well done - </p>
<p>Thumbs up :-) I love machines that are constructed with the intention to do nothing (unlike machines that are intended to do something and actually do nothing).</p>
Simply amazing! It manages to do so much while doing nothing. I already voted for you.
<p>Thank you! I enjoyed the challenge of putting it all together.</p>
I can not find the code for camera, searching the &quot;thing&quot; an all logic around.
<p>In step number 17, &quot;vision_soft.ino&quot; is the code for the Pixy camera. </p>

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Bio: I am an author and a maker. Current projects include Santa's Shop and Little Friend (ultracapacitor powered robot) on hackaday.io. I'm working ... More »
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