Harmonograph tumblr

http://penguinlab.jp/harmonograph/?type=rotary&shift=shift&interval=701.95&resist=0.03&amp=0.29&plotsize=400&accuracy=2000

http://penguinlab.jp/harmonograph/?type=rotary&shift=shift&interval=701.95&resist=0.03&amp=0.29&plotsize=400&accuracy=2000