chapter12

Practical Python Programming for IoT 2nd Edition

Chapter 12 - Measuring Distance and Detecting Movement

Source Code

• rpi folder - Raspberry Pi Python Code

  • requirements.txt - Python dependencies required for this chapter
  • hc-sr04_rpi.py - Distance Measurement with the HC-SR04 Ultrasonic Sensor
  • hc-sr501_rpi.py - Movement Detection with the HC-SR501 PIR Sensor
  • hall_effect_digital_rpi.py - Hall-Effect Sensor Example - Switch or Latching Type
  • hall_effect_analog_rpi.py - Hall-Effect Sensor Example - Ratiometric Type

• pico folder - Pico MicroPython Code

  • ADS1115_pico.py - A simple module for reading analog input from an ADS1115 ADC
  • hc-sr04_pico.py - Distance Measurement with the HC-SR04 Ultrasonic Sensor
  • hc-sr501_pico.py - Movement Detection with the HC-SR501 PIR Sensor
  • hall_effect_digital_pico.py - Hall-Effect Sensor Example - Switch or Latching Type
  • hall_effect_analog_ads1115_pico - Hall-Effect Sensor Example - Ratiometric Type using ADS1115 ADC
  • hall_effect_analog_adc_pico - Hall-Effect Sensor Example - Ratiometric Type using Pico ADC

Datasheets

• HC-SR501 PIR sensor https://www.alldatasheet.com/datasheet-pdf/pdf/1131987/ETC2/HC-SR501.html
• A3144 Hall-effect sensor (non-latching) https://www.alldatasheet.com/datasheet-pdf/pdf/55092/ALLEGRO/A3144.html
• AH3503 Hall-effect sensor (ratiometric) https://www.alldatasheet.com/datashet-pdf/pdf/1132644/AHNJ/AH3503.html
• HC-SR04 or HC-SR04P ultrasonic distance sensor https://tinyurl.com/HCSR04DS

Post Publication Updates and Errata

None