Excavator

cults3d

Volvo ec210 About 1:20 And yes, there is sand at the teeth of the bucket out of my kids sandbox. I hope the pictures are describing the project best. On pic SAM_4173, the lower part of the body is shown with holes for batteries. It was redesigned so a big PB battery fits now. The two servos in the arm have about 120 Ncm, the big one in the body has about 260 Ncm. In the tracks and for turning, there are the cheapest servos ever in there for about €2.5. The servos in the tracks were hacked so that the PWM signal still works but they do it continuously. Just search the web for "PWM servo hack!" In the turnshaft, I soldered the + and - of the servos together to reduce lines from 6 to 4. The tooth gears are bought: http://www.conrad.de/ce/de/product/297410/Zahnradsortiment-Modul-1. Maybe you can also print them; I couldn't. You can use: http://www.thingiverse.com/thing:333018. The tracks are in fact a derivative from http://www.thingaverse.com/thing:36305. Thank you, LoialOtter!