Some old favorites

I'm starting over with learning how to use this after having it stored away for so long. It took some time last night just to figure out how to program a spiral in the Arduino language. I know I've drawn this before but I wanted to see with the new piece of fish line how consistently it would draw. The waves you can see in the pattern are caused by two things I think. As the string piles up on the bobbins it causes it to move a different distance with each step. The bobbins are not perfectly aligned with the center of the motor since they are just glued on with epoxy and I think that accounts for a lot of the waves as well.
I have a variable in the program for how long it pauses between steps of the motors. If it tries to move too fast it looses steps. The fastest it can move is about 10 milliseconds between steps. For this picture I had it delaying 30 milliseconds. I had it increasing the radius of the spiral by 5 motor steps for each time around.
Now I want to try a rectangular pattern and see how consistent it is.

blew the dust off after a long rest

I finally got this out of storage yesterday. This was the last thing I had been working on in April 2014.

hackaday mention again

Hey I got mentioned on Hackaday again.

http://hackaday.com/2015/09/21/3d-cable-robot-uses-the-building-as-its-exoskeleton/

 I need to dig this thing out of storage and do something with it. They had a Maker Faire in Lincoln this last weekend. That would have been a good place to show it off. I have some changes I want to make. I even have most of the parts. I just need to get with it.

Now that's a roll!

 

Grandma Ruth's

I thought while I was drawing logos I should not forget this one. Missing these guys a lot.
How did I do Rod?

I redrew the rose with circles.

I redrew this picture that I had drawn before. This time I had it stop at each point and draw a circle where before it just connected the dots. That give it a lot more definition. Check out the technical details page. I started adding some info there.

valentines day 2014 part two

I tried drawing it again while I was at work this morning. It takes about six hours or more to draw this one. It messed up in the middle. I might need to try it again. I was drawing it 20% bigger because it didn't quite fill up the board.

valentines day 2014

Valentines day 2014 a little early

Sooners

This is for my friend Robert.

bigger Huskers

took 2 and 1/2 hours to draw. i increased the size by 80% and made each circle 18 steps across instead of 14.

Huskers

I think I will try making it bigger.

a better bronco

ok seahawks fans

super bowl 2014

Sorry seahawks,fans I ran out of time to get both done before leaving for the party.
I should have made the circles a little bit bigger, then it would have filled in the lines better.

and a smile

this one you should recognize

dots

hmmm

hands with a different pen

I tried it with a different pen. It has a bullet tip instead of the chisel tip of the the other one. You can see it was also about out of ink by the time it got done. It is stickier than the other one so the circles it draws are smaller even though the doodler thinks they are the same size.
What should I try next?