PROGRAMMING SCHOOL
Raspberry Pi-F5 / T5
1. KAMERA - LED CONTROL (OPEN CV)13. IR SENSOR (ANALOGUE)
2. ENCODER MOTOR - HALF STEP - BETTER PRECISION14. IR SENSOR (DIGITAL)
3. ENCODER MOTOR - STEP - LESS PRECISE15. DC MOTOR - SPEED CONTROL (ANALOGUE)
4. RX - TX COMMUNICATION16. DC MOTOR - TWO WAYS ROTATION (DIGITAL)
5. I2C COMMUNICATION17. DC MOTOR - ONE WAY ROTATION (DIGITAL)
6. SERVO MOTOR18. DC MOTOR (DIGITAL)
7. ULTRASOUND SENSOR (ANALOGUE)19. PHOTO SENSOR - LED LIGHT (ANALOGUE)
8. ULTRASOUND SENSOR (DIGITAL)20. PHOTO SENSOR - LED LIGHT (DIGITAL)
9. COLOR SENSOR - BLACK LINE21. LED LIGHT - MICRO SWITHCH (ANALOGUE)
10. COLOR SENSOR - COLORS22. LED LIGHT (ANALOGUE)
11. MAGNETIC SENSOR (DIGITAL)23. LED LIGHT - MICRO SWITCH (DIGITAL)
12. HEAT SENSOR (ANALOGUE)24. LED LIGHT (DIGITALY)

KAMERA - LED CONTROL (OPEN CV)TOP
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The program works on the principle of comparing the new and previous image (frame). Each major or minor change in the image turns on the LED. Sensitivity can be changed by changing the value (if z_norm> 1000 :). The lower the value, the higher the sensitivity. Before running the program, you need to install and run OpenCV support. This program in a modified form can be used to monitor a space (interior).

ENCODER MOTOR - HALF STEP - BETTER PRECISIONTOP
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We count the state changes (values 1 and 0). This method is better accurate than the previous one (STEP). The number of impulses we will count depends on the program itself. If the program only controls the engine, or still performs other operations. In the second case, especially at higher engine speed, the program will not be able to read all pulses.

ENCODER MOTOR - STEP - LESS PRECISETOP
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We only count impulses (value 1). To avoid multiple sensor readings, we use the change indicator (ids). This method is less precise. The number of impulses we will count depends on the program itself. If the program only controls the engine, or still performs other operations. In the second case, especially at higher engine speed, the program will not be able to read all pulses.

RX - TX COMMUNICATIONTOP

I2C COMMUNICATIONTOP

SERVO MOTORTOP
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Example of operating the first servo motor. In the software example you can also see the code for controlling another servo motor.

ULTRASOUND SENSOR (ANALOGUE)TOP
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Using the ultrasonic sensor, we can measure the distance to the object in front of the sensor. Depending on the sensor, larger or smaller maximum distances can be read. The LED illuminates less when the distance from the sensor to the subject is smaller and vice versa.

ULTRASOUND SENSOR (DIGITAL)TOP
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With the help of an ultrasonic sensor we can detect an object when it is at a distance less than the one set in the program (the LED lights up). If the object is at a greater distance, the program will not register it.

COLOR SENSOR - BLACK LINETOP
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The readings for white and black are usually different enough, so that with the help of two color sensors we can make robot car that follows the black line.

COLOR SENSOR - COLORSTOP
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The color sensor reads colors as values (analog). According to the apparent color value, a certain color of the LED lights up. The readings are VERY dependent on the conditions (illumination) and may vary even though the color patterns are the same

MAGNETIC SENSOR (DIGITAL)TOP
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A magnetic sensor detects a magnetic field. By approaching the sensor to a magnetic field (permanent or electromagnet), the LED lights up.

HEAT SENSOR (ANALOGUE)TOP
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By heating the thermal sensor to a certain temperature, the LED lights up. We heat the thermal sensor with light bulb.

IR SENSOR (ANALOGUE)TOP
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By analogous reading of the IR sensor, a white surface can be detected at a distance of several centimeters.

IR SENSOR (DIGITAL)TOP
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Depending on the IR sensor readout, the LEDs light up. The white surface gives the reading 1 and the black (line) 0.

DC MOTOR - SPEED CONTROL (ANALOGUE)TOP
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Program, changes the rotation speed of the DC motor. Lower rotation speed, usually means lower engine power.

DC MOTOR - TWO WAYS ROTATION (DIGITAL)TOP
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Pressing the switch A and B, alternates the direction of rotation of the DC motor (both directions).

DC MOTOR - ONE WAY ROTATION (DIGITAL)TOP
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By pressing switch, the DC motor starts to rotate in one direction.

DC MOTOR (DIGITAL)TOP
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The DC motor starts rotating in one direction for 100 ms. It stops for 2 seconds and then repeats the action.

PHOTO SENSOR - LED LIGHT (ANALOGUE)TOP
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The LEDs light up depending on the value read by the PHOTO sensor.

PHOTO SENSOR - LED LIGHT (DIGITAL)TOP
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The LEDs light up when the PHOTO sensor is sufficiently illuminated.

LED LIGHT - MICRO SWITHCH (ANALOGUE)TOP
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By pressing the button, the bright LEDs light up.

LED LIGHT (ANALOGUE)TOP
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The program slowly increases the brightness of the LED.

LED LIGHT - MICRO SWITCH (DIGITAL)TOP
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Pressing the switch, the LED lights up.

LED LIGHT (DIGITALY)TOP
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The LED lights up and goes out at half-second intervals.