sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems
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InternetOfThingsAndEmbedded.../Practical/Connections.md

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IoT Connections

Refer Raspberry Pi pinout diagram Raspberry Pi PINOUT

Assignment 2 - LEDs and Buzzer

Important

Long terminal in LED is always positive, short terminal is always negative.

Single LED

Device Positive terminal Negative terminal (Ground/GND) Signal/Output
LED GPIO 16 (PIN 36) GROUND (PIN 34) N/A

Two LEDs

Device Positive terminal Negative terminal (Ground/GND) Signal/Output
LED 1 GPIO 16 (PIN 36) GROUND (PIN 34) N/A
LED 2 GPIO 26 (PIN 37) GROUND (PIN 39) N/A

Buzzer with one LED

Device Positive terminal Negative terminal (Ground/GND) Signal/Output
Buzzer GPIO 16 (PIN 36) GROUND (PIN 34) N/A
LED GPIO 26 (PIN 37) GROUND (PIN 39) N/A

Assignment 3 - IR Sensor

Device Positive terminal Negative terminal (Ground/GND) Signal/Output
IR Sensor 5V power (PIN 2) GROUND (PIN 34) GPIO 16 (PIN 36)
LED GPIO 26 (PIN 37) GROUND (PIN 39) N/A

Assignment 4 - DHT11 (Temperature sensor)

Device Positive terminal Negative terminal (Ground/GND) Signal/Output
DHT11 5V power (PIN 2) GROUND (PIN 34) GPIO 16 (PIN 36)

Assignment 5 - Camera

Device Positive terminal Negative terminal (Ground/GND) Signal/Output
Picamera N/A N/A CSI port

Water level

Device Positive terminal Negative terminal (Ground/GND) Signal/Output
Water sensor 5V power (PIN 2) GROUND (PIN 34) GPIO 16 (PIN 36)
LED GPIO 26 (PIN 37) GROUND (PIN 39) N/A