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Chuck Stephens
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Here's a sneak peek at the laser spirograph synthesizer. Tune in to the hang out for all the deets!

So has anyone been able to get the motor shield working with the Galileo? I seem to be having a problem with the Wire library.

Help! I'm usually the tool and design guy on the team but I'm stuck doing the code this time around and I'm an Arduino noob. I'm controlling the speed of a 12vDC fan with a 10k pot. I've added this line to my code-
sensorValue0 = map(sensorValue0, 0, 1023, 0, 255);
to map the pot values to the motor speed variable range but I'm still getting a strange spiked distribution rather than a smooth 0 to full speed transition. The speed goes from low to high several times as I sweep the pot. Any suggestions on how to fix this?

OK so I assembled my motor shield and tested it with the arduino and it's working fine. I installed the Galileo IDE and updated the driver just fine. When I went to update the firm ware I got 'Target Firmware version query failed' and it doesn't do anything. Any ideas?

I kludged together a quick and dirty prototype of my laser spirograph. Here's a video-
I set it up with rheostats for manual analog control. It works somewhat, but I've decided to build a new model with 4 DC Computer fans because they have a much better surface area to mount the mirrors. I'm also using 1.5" cosmetics mirrors. I'm also hoping to find a green laser in time for the big reveal. Fingers crossed!

Super stoked to be here, guys! We had so much fun with the Robot Hacks we can't wait to get our hands dirty with this one. I've been working on a multi-axis laser 'spirograph' style projector with PWM motor controls. I want to use the Galileo to get better control of my motor speeds to achieve specific ratios for better control of the projected pattern. The ability to save settings would be nice also. This coincides nicely with our upcoming maker festival, the Gulf Coast MakerCon, on April 5&6, so we'll be able to debut our project for the public there as well as online. Thanks for bringing us along for the fun!

Chuck Stephens
Gulf Coast MakerCon
Hillsborough County Community Innovation Center Makerspace Advisor

Are we the only ones still tweaking our project at the last minute?
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