valentines 2014 revisited

This took almost two hours to draw. Condensed down into just over three minutes of  video.

This is based on a stamp that Stampin Up used to sell. It was scanned, traced, stippled and turned into an SVG file. Then I extracted the data with a text editor, tweaked it with Excel and put it into the arduino. It draws a six dot wide circle at each point. There are 4810 circles.

about as good as it gets

I switched to a new pen because the other one ran out of ink. This one is thinner, more like a pen than a marker. It draws a finer line.

Here is the timelapse. Photos taken every two seconds with my laptop camera. Output fifteen photos per second.

tried to fix it

I swapped the SIN and COS functions around. That had the effect of rotating the picture a quarter turn and drawing in the opposite direction. I didn't have time for it to finish last night but what it did worked pretty good. I will try again when I have more time and film it.

six nodes one hundred rounds timelapse

I stitched over 3000 photos together into a little over three minute video.

It messes up part way through but is still mesmerizing to watch.

six nodes one hundred rounds

I tried this one last night. As it moved down on the left side the pen would kind of stick to the board and didn't slide nicely. I think at one point it stuck enough to cause the bobbin to lose a wrap of string. All the lines after that were out of place. I did have the laptop set up to take a picture every two seconds. I am working on pasting them all together into a video. Any suggestions on good software to do that would be appreciated.

It may be time to move up to more powerful motors and a better motor driver.

six node time lapse oops again

It messed up while drawing the six node figure also and I stopped it part way through. I haven't drawn it right yet.

five node time lapse oops

I went off to Dairy Queen to get supper while it was drawing. The string caught on the knot in the bobbin and wound up when it thought it was unwinding. There are a couple of frames of my wife putting the pen gondola back on the front of the board.

I redid it so you can see what it is supposed to look like.

four node time lapse

three node time lapse

Two nodes time lapse

One

I'm experimenting with time lapse using the camera on my laptop.

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