I will be using raspberry pi for connecting following sensors
- DHT-11 Digital Temperature & Humidity Sensor for temperature and humidity measurement
- HC-SR501 PYROELECTRIC INFRARED PIR MOTION SENSOR for motion sensing
- Soil Hygrometer Humidity Detection Module Moisture Testing Sensor for soil moisture
- HC-SR04 Ultrasonic Distance Sensor for measuring distance
- Three LEDs
How will I know the amount resistance to be connected with each sensors to gpio? What happens if I connect resistor which is insufficient?