Speed Sensor Module

The speed sensor consists of two parts: a transmitter and a receiver. The transmitter emits light, which then enters the receiver.

If the light beam between the emitter and receiver is interrupted by an obstacle, the receiver will not detect the incident light, then the D0 pin will output low level.

Note

The A0 pin on this module is empty and there is no circuit.

Example

• 2.2.6 Speed Sensor Module (C Project)

• 2.2.6 Speed Sensor Module (Python Project)

• 1.7 Piggy Bank (Scratch Project)