You didn't connect the GND pin. Note: The V5.0 shield has 3 pins. Pin 1 = GND, Pin 2 = VCC, Pin 3 = Signal. If you use a 3-pin cable reversed, you will send VCC to the signal pin and GND to VCC. This usually fries the sensor. Fix: Always check the white silk-screen text on the PCB to verify which pin is which.
The digital "V" rows pull power directly from the Arduino's onboard 5V regulator. Use this mode only for low-power sensors (LEDs, ultrasonic sensors, photoresistors). arduino sensor shield v5 0 manual
Decoding the Arduino Sensor Shield v5.0: A Beginner’s Manual & Wiring Guide You didn't connect the GND pin
Dedicated header for APC220 radio communication modules. Pin 2 = VCC
You didn't connect the GND pin. Note: The V5.0 shield has 3 pins. Pin 1 = GND, Pin 2 = VCC, Pin 3 = Signal. If you use a 3-pin cable reversed, you will send VCC to the signal pin and GND to VCC. This usually fries the sensor. Fix: Always check the white silk-screen text on the PCB to verify which pin is which.
The digital "V" rows pull power directly from the Arduino's onboard 5V regulator. Use this mode only for low-power sensors (LEDs, ultrasonic sensors, photoresistors).
Decoding the Arduino Sensor Shield v5.0: A Beginner’s Manual & Wiring Guide
Dedicated header for APC220 radio communication modules.