Projects

Light Play

Delta Robot : The Base and Arms

Today I made the arms for my delta robot ! I originally was planning on using aluminum for these pieces but it was a pain grinding through the material with my mighty Dremel… It took me more than a few minutes to make each cut and the metal heated up quite a bit. I was getting discouraged about the prospect of drilling free handedly through this stuff, so I went on youtube to find out any tips on drilling through metal. It was around then that I saw a black plastic hanger laying on the ground near my bed and decided to use it to make my arms instead. The video above is me testing out the structure so far with a code which allows you to control the robot with a GUI in processing. For the code I used, check out this guy’s blog: Matt Greensmith’s Ramblings TOMORROW…… Delta will…

Light Play

Sad Delta Prototype

Yes, that sad looking thing held together by electrical tape, paper clips and rubber bands is none other than my mighty attempted to make a working prototype of my delta robot. I don’t have any metal. No scraps, no salvaged pieces, and even if I did I wouldn’t have a place to make any mods at the moment. So yeah, I used cardboard. I really don’t see this working too well…. but I wanted to make sure I was on the right track with measurements and all. At least I have push rods and ball joints right now. Tomorrow I will hit Home Depot and start searching for stuff. If anyone knows a good place to buy metal shapes…. let me know.

Flower

Flower (2 servos) Controlled by WiiChuck

There is nothing like getting a package from Sparkfun in the mail to get your morning off to a happy start! I have been waiting all week for my wiimote adapter so that I can get ready to use it to control my delta robot (once I’m done building it). In the mean time I found this super neat code that allows you to control two servo motors for a full range of movement. Cool! I immediately pulled Flower off the shelf and got her moving again. Aside from her cables needing to be tightened again, she danced nicely. For more information on the code I used, check out this site: Arduino and Nintendo Nunchuck for pan and tilt camera interface.

Projects

TouchOSC Controlling a Servo with a Dial

So, after I successfully made my RGB slider, I made a victory sandwich and then went out in the 110 degree weather to check the mail. It was worth the sweat because my servos came. (yay!) So I’ve been playing with them. Here is a neat tutorial I found on how to control a motor with a simple dial in TouchOSC for the iphone: Source code can be found here.

Projects

TouchOSC RGB Color Mixer with Sliders

Ok, moving on to slightly more advanced stuff regarding TouchOSC. Today I copied this nifty little project that I found on youtube which outlines how to make a simple slider that controls LEDs. I highly recommend following this tutorial and typing out the code as he explains what everything does. It was really helpful for a beginner like me as it solidified some of my understanding about the relationship between processing, arduino and the touchOSP app. And yeah, I am aware that my ‘blue’ LED is in fact yellow. I didn’t have any pretty blues ones on me for this project. =P The video I follow by Harrybj17:

Projects

TouchOSC 2 buttons, 2 LEDs

Several months ago I came across a couple of people who had created Delta robot models and were controlling them via the accelerometer on their phones. I thought this was a neat idea and decided to build my own charming little tripod and see what I could make it do. Today I downloaded the cool app TouchOSC for my iphone. If you don’t know what this is, it’s a rather nifty program that allows you to harness the power of your smart phone’s sensors by creating virtual buttons, sliders, and other input devices that will communicate with your arduino over your network. I am currently building up to this project by doing smaller tasks involving the OSC app and separately the delta bot. Right now I am simply getting a feel for using the OSC editor along with processing as I’m still somewhat new to programming all together. My first success…

Flower

A Robot Named Flower

This is the first robot I made while attending SAIC in Chicago. It was the project which got my feet wet and ultimate caused me to fall in love with electronics and fabrication. I had never used any shop tools before or even touched a soldering iron for that matter. I came a long way in four months from literally knowing nothing to programming, engineering, and building a working robot from raw materials. This little drawing to the left was the first concept sketch I proposed to my professor. I called this robot ‘Flower’ and aimed to have wire pulleys powered by two servo motors tug its spring body in the direction of any onlooker its sonar sensor could pick up in the vicinity. In addition to leaning, I wanted the light bulb on top to glow and dim according to how close people came to it. The flower was…