Table 4.
Bill of electronic materials.
| Description | Number | Cost per unit(￥) | Total cost(￥) | Source of materials |
|---|---|---|---|---|
| Arduino MEGA 2560 | 1 | 295 | 295 | https://www.taobao.com |
| MEGAV2 Expansion Board Veneer | 1 | 63 | 63 | https://www.taobao.com |
| L298N | 2 | 6.8 | 13.6 | https://www.taobao.com |
| Metal Pushbutton Switches | 1 | 14.5 | 14.5 | https://www.taobao.com |
| NRF24L01 | 2 | 5.5 | 11 | https://www.taobao.com |
| Arduino pro mini | 1 | 46.88 | 46.88 | https://www.taobao.com |
| Toggle switch | 1 | 0.12 | 0.12 | https://www.taobao.com |
| 3-pin, 2-position, single-connected pushbutton switch | 2 | 8.92 | 17.84 | https://www.taobao.com |
| Button | 1 | 23 | 23 | https://www.taobao.com |
| PS2 rocker | 2 | 3.35 | 6.7 | https://www.taobao.com |
| 18,650 batteries | 2 | 18.8 | 37.6 | https://www.taobao.com |
| 2 Series 18,650 Battery Pack | 1 | 2.8 | 2.8 | https://www.taobao.com |
| Skateboard wheels | 4 | 7.9 | 31.6 | https://www.taobao.com |
| MG996 | 4 | 13.5 | 54 | https://www.taobao.com |
| SG90 | 1 | 10.6 | 10.6 | https://www.taobao.com |
| Motor | 4 | 262.4 | 1049.6 | https://www.taobao.com |
| 12VBattery 6000 mAh | 1 | 78 | 78 | https://www.taobao.com |
| AMS1117-3.3 Step-Down chip | 1 | 0.41 | 0.41 | https://www.taobao.com |
| Total | 1756.25 | |||