read digital sensor () at ()

Introduction

A Passive Infrared (PIR) motion sensor is a device commonly used in security systems, lighting control, and other applications to detect the presence of a moving object or person by measuring changes in infrared radiation. It’s called “passive” because it doesn’t emit any energy itself; it only detects the infrared radiation emitted by objects in its field of view.

1. Detection Principle: PIR sensors work based on the fact that all objects with a temperature above absolute zero (-273.15°C or -459.67°F) emit infrared radiation. PIR sensors are designed to detect changes in the amount of infrared radiation in their surroundings.
2. Sensor Construction: A PIR sensor typically consists of two pyroelectric sensors, which are sensitive to changes in temperature, and a special Fresnel lens that focuses the infrared radiation onto these sensors.

Circuit

connection

IR_VCC – 5v

IR_GND – GND

IR_OUTPUT – D7

LED+ to D9

LED- to  GND

Resistance -270

Code

Create a circuit as per the above circuit diagram

1. From control drag  if -else block.
2. From the Arduino sensor palette, add a “read digital sensor () at ()” block. Choose “PIR” as the sensor type and select pin 7.
   
3. The sensor’s detection of an object will alter the status of pin 7 from LOW to HIGH. In response to object detection, add the “set digital pin () output as ()” block from the Arduino palette within the “if” block.
   
4. For the “else” part, ensure the LED turns off when no object is in front of the sensor.
   
5. Drag a “forever” block from the controls palette and place the above set of blocks inside it.
6. finally, add when flag clicked block from events palette

Script

Output

OUTPUT will be updated soon

introduction

A metal touch sensor is a type of sensor that generates signals when touched by any charged object. it has a transistor-like element which sensor the external touch on it, based on thee signal generated we can use this sensor as a switch or any other application.

Circuit

Code

1. Add an “if” block from the controls palette into the scripting area.
   
2. From the Arduino sensor palette, add “read digital sensor () at pin()” inside the “if” block. Choose “touch sensor” from the drop-down menu
   
3. Create a variable and name it “count.” Increment the count by 1 inside the “if” block, which helps keep track of touch interactions.
   
4. Now use an “if then else” block inside the “if” block to check whether the count variable is even or odd. The modulo (mod) block from the Arduino palette can be utilized for this purpose.
   
5. Based on the condition, control the LED to turn it ON for even counts and OFF for odd counts.
6. Add the “set digital pin () output as ()” block from the Arduino palette within the “if” and “else” blocks, respectively.
7. Set the “count” variable to 0 at the beginning of the code to ensure accurate counting from the start.
   
8. Add a “when flag clicked” block from the events palette to initiate the code execution.

Script

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  Output