Polar graph

Started my own Polargraph project wich will include a redesign for al parts but also the software over time will be rewritten. While experimenting the NEMA 17 motors are getting quite hot. I created a part on wich you can screw a 40x40MM fan with M3 and press it on the back of the nema 17 steppermotor. Works as a charm. But all is work in progress so it will not be the final version but it looks cool. More files and photo's etc will be added here over time.

Assembling is easy with an m3 bolt with fine threads, i use m3X25mm because of the additional fanguard and fan.

Electronics used.

From Aliexpress:

Arduino mega2560 €5,70
Ramps 1.4 €3,43
DRV8825(Geetech) €6,40
LC2004 smartContr € 8,70
Nema17 12v .4amps €7 euro a piece local shop
40x40mm fans €2 euro a piece
Wood €16,5 euro local shop
ballchain localshop € 3,45 per meter
Servo SG9 €1,5 a piece (1 used)
nuts screws etc €2,5 euro

Software