Sensor Modules and Using Libraries

10 Lektionen in dieser Stufe

1. Installing Libraries with the Library Manager
   Search for, install, update and remove libraries in IDE 2. · Lab: Install a DHT sensor library and find where it is stored on disk.
2. Learning a Library from Its Examples
   Open bundled examples and work out which functions a library offers. · Lab: Run a library example unchanged, then list every function it calls and what each returns.
3. Temperature and Humidity with DHT11 and DHT22
   Read a single-wire digital sensor and respect its minimum sampling interval. · Lab: Print temperature and humidity every two seconds and compare the two sensor types.
4. Distance with an HC-SR04 Ultrasonic Sensor
   Trigger a pulse, time the echo with pulseIn and convert it to centimetres. · Lab: Measure distances from 5 to 100 cm and compare with a ruler.
5. Motion Detection with a PIR Module
   Use a digital-output motion sensor and adjust its sensitivity and hold time. · Lab: Switch on an LED for ten seconds after motion is detected.
6. Soil Moisture: Resistive and Capacitive Probes
   Read moisture probes and explain why resistive ones corrode. · Lab: Record dry-air and in-water values for both probes and map them to percent.
7. Sound Level and Clap Detection
   Detect short peaks from a microphone module. · Lab: Toggle an LED with a clap and reject continuous noise.
8. Comparator Modules and Their Trim Potentiometer
   Understand modules with a digital threshold output and set the trip point. · Lab: Adjust an infrared obstacle module and a hall sensor module to switch at a chosen distance.
9. Reading a Sensor Datasheet for Range, Accuracy and Timing
   Extract supply voltage, range, accuracy and timing limits from a datasheet. · Lab: Fill in a comparison sheet for the DHT11, DHT22 and HC-SR04 from their datasheets.
10. Validating Readings and Handling Sensor Failure
    Detect impossible values, timeouts and missing sensors and react safely. · Lab: Unplug each sensor while running and make the sketch report the fault instead of nonsense.

Abschlussprojekt

A room and plant monitor that reports temperature, humidity, soil moisture, motion and distance over serial and sounds an alarm on limits.

Teile für diese Stufe

• 1 × UNO-compatible board
• 1 × USB cable matching the board
• 1 × Solderless breadboard 830 points
• 1 × Jumper wire set male-male and male-female
• 1 × DHT11 temperature and humidity module
• 1 × DHT22 temperature and humidity module
• 1 × HC-SR04 ultrasonic distance sensor
• 1 × PIR motion sensor module
• 1 × Capacitive soil moisture sensor
• 1 × Resistive soil moisture sensor
• 1 × Microphone sound sensor module
• 1 × Infrared obstacle sensor module
• 1 × Hall effect sensor module
• 1 × Passive buzzer
• 3 × LED 5 mm assorted
• 3 × Resistor 220 ohm

In jeder Lektion legst du die passenden Teile direkt in den Warenkorb. Arduino-kompatibel →