BB-8 (v2) parts list and bill of materials
I'm often asked how much my BB-8 droid cost me to build. This is the parts list for my BB-8 (v2) showing the things I bought. Everything else I already had. This doesn't include, shipping, extra parts, nor does it include older versions of things that aren't in the latest BB-8. All amounts are in US dollars.
| Item | My cost |
|---|---|
| Ball | |
| 12" cardboard globe, second hand | $12.00 |
| fiberglass cloth (6oz) 20 sq ft from ebay | $20.00 |
| sandpaper package | $3.84 |
| anti-slip spray coating paint | $8.43 |
| transparent duct tape (Scotch brand) | $7.28 |
| Head | |
| 8" styrofoam hemisphere from Michaels | $12.16 |
| magnets x 20, 2cmx1cm ones with holes, from ebay | $6.97 |
| casters from pololu.com (#2691) ($3.95 x 3 + $14 shipping) | $25.85 |
| Gesso, white | $6.53 |
| LiPo battery 3.7V, 2000mAh | $13.69 |
| Remote control | |
| HC-05 transceiver board | $3.29 |
| Arduino | |
| Arduino UNO, from adafruit.com | $24.95 |
| Dual H-bridge board | |
| resistors | $1.53 |
| MOSFETs: FQP27P06 x 4 | $5.41 |
| MOSFETs: PSMN022-30PL x 4 | $2.50 |
| red connectors male (1 package of 4) | $2.30 |
| red connectors female (1 package of 4) | $2.68 |
| fuses 10A (1 package of 5) | $2.07 |
| switch, SPDT 5A mini x 2 | $3.84 |
| Stabilization | |
| BNO055 IMU board, from adafruit.com | $34.95 |
| Motors | |
| 12V cordless drill motors x 2, second hand | $7.70 |
| stainless steel hose clamps 5/8-1.5" x 6 | $4.15 |
| locktite - blue threadlock | $7.14 |
| Batteries | |
| 14.4V cordless drill batteries x 2, second hand | $7.70 |
| velcro | $6.91 |
| Rollers | |
| stainless steel hose clamps x 2 | $2.75 |
| Total | $236.62 |
