HYuiii| Quantity | Component name | |
| 1 | × | AmebaD RTL8722DM MINI x 1 |
| 1 | × | HC-SR04 Ultrasonic |
| 1 | × | Servo (Tower Pro SG90) |
Servo Distance Indicator
Use the combination of servo module and ultrasonic sensor and our RTL8722DM_MINI board to measure the distance and to show on the scale.