AD Keyboard module allows you to use an analog port to read the five key states, save for the Arduino IO port, with Arduino sensor expansion board can be done using multiple buttons for interactive work.

5 buttons occupy an analog port, saving resources

Analog acquisition, press the different buttons of different voltage output

High quality Omron button, sensitive and durable

For Arduino platform, compatible with Arduino sensor interface

Provides schematics, Arduino test code

Adopts TCRT5000 photoelectric sensor and comparator

Easy to use, good stability and anti-interference ability

Perfect for black and white line detection for smart car

Black line for low level output, white line for high level output

LED lamp power light, the output signal. TTL level output, TTL output signal for low level effectively.

Ability to drive about 100ma, can be directly driven relay, buzzer. small fan, and so on.

Sensitivity can be adjusted through the potentiometer.

Raindrops board and control board are separated, convenient to wire leads.

The raindrops plates of large area, more conductive to detect the rain.