To save money and to get best out of the learning process you can order components online and have students assemble the robot. The prices below are according to NextThingCo and AliExpress listings and include shipping to EU. While importing to EU taxes may apply. Prices assume at least 10 robots are going to be assembled.
| Image | Description | Amount | Row total |
|---|---|---|---|
 |
C.H.I.P. from NextThingCo | 10pcs | 94.32 EUR |
 |
Plastic geared continuous servo motor FS90R | 20pcs (4 lots of 5) | 63.63 EUR |
 |
Spoked wheel | 20pcs (2 lots of 10) | 34.70 EUR |
 |
Lithium Polymer batteries 3.7V 1100mAh | 10pcs+ | 51.46 EUR |
 |
SumoCHIP daughterboard from MakerStudio | 10pcs | 15.2 EUR |
 |
L-profile aluminium sheet | 60x60x60mm | 5.5 EUR |
 |
Infrared emitter and receiver | 50 pairs | 4.01 EUR |
 |
Surface mounted resistors | 200pcs | 1.67 EUR |
| ... | 40-pin 2.54mm header | 20pcs | 2.82 EUR |
 |
Surface mounted LED | 50pcs | 1.01 EUR |
 |
60V 200mA N-channel MOSFET | 10pcs | 0.85 EUR |
| Total cost: | 275 EUR | ||
| Single robot cost: | 27.5 EUR |
##Alternative components
Optional upgrades:
| Image | Description | Amount | Item price | Subtotal | Price difference |
|---|---|---|---|---|---|
 |
Metal geared continuous servo motor | 2pcs | 4.86 EUR | 9.72 EUR | +3.4 EUR |
 |
Solid servo wheel | 2pcs | 2.19 EUR | 4.38 EUR | +0.94 EUR |
 |
Sharp GP2Y0A21Y0F distance sensor | 2pcs | 3.24 EUR | 6.48 EUR | ... |
PCB alternatives, shipping to EU included:
| Image | Description | Amount | Item price | Subtotal | Price difference |
|---|---|---|---|---|---|
|
SumoCHIP PCB from DirtyPCB-s | 1pcs | 2.22 EUR | 2.22 EUR | ... |