ESP8266-Arduino programming example-GA1A12S202 logarithmic scale analog light sensor

GA1A12S202 Logarithmic Scale Analog Light Sensor

1, Introduction to GA1A12S202

The GA1A12S202 sensor is logarithmic over a large dynamic range of 3 to 55,000 Lux, so it has high sensitivity at low light levels, but is also nearly impossible to "maximize" so it can be used indoors or outdoorsIt does not require code changes or calibration.

GA1A12S202 Sensor Breakout is small and easy to integrate into any project.It's a nice upgrade to the CdS photocell.It does not require a microcontroller and the analog voltage output increases with the amount of light hitting the sensor surface.Use it to build photovore, automated lighting systems, photometers, or any number of light-sensitive/light-responsive projects.

2. Hardware preparation

• ESP8266 NodeMCU development board
• One MLX90614 sensor module
• Panel one
• Several DuPont lines
• A data cable

The hardware wiring diagram is as follows:

3. Software preparation

• Arduino IDE or VSCode + PlatformIO

In the previous article, I gave a detailed introduction to how to build the ESP8266 development environment, please refer to: