In this example we take a look at the KY-021 Mini Reed Switch Module and connect this to a Raspberry Pi. Lets speak about the reed switch – from wikipedia Reed Switch Information The reed switch contains a pair (or more) of magnetizable, flexible, metal …

In this example we take a look at the KY-006 Passive Buzzer Module and connect this to a Raspberry Pi. The KY-006 Buzzer Module can generate tones between 1.5 to 2.5 kHz by switching on and off at different frequencies either using delays or PWM. …

In this example we take a look at the KY-010 Photo Interrupter Module and connect this to a Raspberry Pi. The sensor uses a beam of light between the emitter and the detector to check if the path between both is being blocked by an …

In this example we take a look at the KY-011 Two color LED module and connect this to a Raspberry Pi. As you may have guessed this is a common cathode LED with a red anode and a green anode. You can adjust the amount …

In this example we take a look at the KY-003 Hall Magnetic Sensor Module and connect this to a Raspberry Pi. The KY-003 consists of a 3144EUA-S sensitive Hall-effect switch These Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended …

In this example we take a look at the KY-017 Mercury Tilt Switch Module and connect this to a Raspberry Pi. This info is from wikipedia Mercury switches have one or more sets of electrical contacts in a sealed glass envelope that contains a small …

In this example we take a look at the KY-002 Vibration switch module and connect this to a Raspberry Pi. When the switch detects movement, the output of the module is sent low. The module is based around the Gaoxin SW-18010P vibration switch, lets look …

In this example we take a look at the KY-009 3-color full-color LED SMD module and connect this to a Raspberry Pi. RGB LEDs consist of one red, one green, and one blue LED. By independently adjusting each of the three, RGB LEDs are capable …

In this example we take a look at the KY-018 Photo resistor module and connect this to a Raspberry Pi using an ADC add on board A photoresistor (or light-dependent resistor, LDR, or photo-conductive cell) is a light-controlled variable resistor. The resistance of a photoresistor …

In this article we will connect a PIR to a raspberry Pi and light an LED if motion detected, in real life you would use a buzzer or sounder. Lets look at a PIR A passive infrared sensor (PIR sensor) is an electronic sensor that …