Lesson 10 Laser Receiver
Introduction
The principle for many laser receiving devices is the same. The laser ray goes through the
optical lens and then is received by the photosensitive device, i.e. the photodiode. After
receiving the rays, the photodiode will generate currents accordingly (based on the light
intensity) which then output electrical signal after running through the amplifier. Then
use an I/O port of the Raspberry Pi to detect the output terminal of the Laser Receiver
module, and thus we can tell whether there are rays shone on the module.
Components
- 1 * Raspberry Pi
- 1 * GPIO Extension Board
- 1 * 40-Pin GPIO Cable
- 1 * Breadboard
- 1 * Laser Transmitter Module
- 1 * Laser Receiver Module
- 2 * 3-Pin Wires
Experimental Principle
The Fritzing image:
The Physical picture:
Pin definition:
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