KY-008: Laser Transmitter Module
This module gives single laser beam. And not sense any laser beams. If you want sense any laser beam you must use this module with any laser detector sensor.
KY-025: Reed Switch Module
We can say this module "magnetic switch module". You can use this sensor if you want to turn on or off an electronic circuit via magnet.
KY-027: Light Cup module
This module is a mercury module and allows different values to be sent according to position change line.
Can be used for movement and position studies etc.
KY-032: IR Obstacle Avoidance Sensor
This sensor with infrared receiver and transmitter detects the distance to objects by means of infrared signals. The signal will be HIGH when the threshold is closer than the threshold level which set by the potentiometers. You must make potentiometer settings to work as you want. If you want to use Enable pin you must remove jumper.
Features of KY-032
Detection distance: 2- 40 cm
Effective angle: 35 °
KY-034: 7 Color Flash Module
This is a a module with no other ratios to show various colors.
Colors are Pink, yellow, green (highlight), etc.
S: Signal. You can connect this pin to digital pins
Vcc: With this pin you can feed module.
But this pin has a 330 Ohm resistance so lights low.
-: This is ground
KY-038: Microphone small sound sensor module
This module sends a digital or analog value according to the sound of environment. This module is useful for sound based projects alarm, sound controled lights, fans etc.
A0: Analog signal according to environmental sound as voltage
Vcc: Input range is: 4V to 6V
D0: Sends digital signal according to specified limit value