Freenove Ultimate Starter Kit

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Chapter 24 Ultrasonic Ranging

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Circuit

Note that the voltage of ultrasonic module is 5V in the circuit.

Schematic diagram

Hardware connection

Main Page

Table of Contents4
Contents4
Preface7
Raspberry Pi8
Install the System15
Component List15
Optional Components17
Raspbian System19
Remote Desktop & VNC22
Chapter 0 Preparation32
Linux Command32
Install Wiringpi35
Obtain the Project Code36
Python2 & Python337
Code Editor39
Gpio44
GPIO Extension Board48
Breadboard Power Module49
Next50
Chapter 1 LED51
Project 1.1 Blink51
Chapter 2 Button & LED59
Project 2.1 Button & LED59
Project 2.2 MINI Table Lamp65
Chapter 3 Ledbar Graph71
Project 3.1 Flowing Water Light71
Chapter 4 Analog & PWM76
Project 4.1 Breathing LED76
Chapter 5 RGBLED82
Project 5.1 Colorful LED82
Chapter 6 Buzzer88
Project 6.1 Doorbell88
Project 6.2 Alertor94
Chapter 7 AD/DA Converter99
Project 7.1 Read the Voltage of Potentiometer99
Chapter 8 Potentiometer & LED110
Project 8.1 Soft Light110
Chapter 9 Potentiometer & RGBLED115
Project 9.1 Colorful Light115
Chapter 10 Photoresistor & LED122
Project 10.1 Nightlamp122
Chapter 11 Thermistor128
Project 11.1 Thermometer128
Chapter 12 Joystick134
Project 12.1 Joystick134
Chapter 13 Motor & Driver141
Project 13.1 Control Motor with Potentiometer141
Chapter 14 Relay & Motor152
Project 14.1.1 Relay & Motor152
Chapter 15 Servo160
Project 15.1 Servo Sweep160
Chapter 16 Stepping Motor169
Project 16.1 Stepping Motor169
Chapter 17 74HC595 & Ledbar Graph180
Project 17.1 Flowing Water Light180
Chapter 18 74HC595 & 7-Segment Display188
Project 18.1 7-Segment Display188
Project 18.2 4-Digit 7-Segment Display195
Chapter 19 74HC595 & LED Matrix208
Project 19.1 LED Matrix208
Chapter 20 LCD1602220
Project 20.1 I2C LCD1602220
Chapter 21 Hygrothermograph DHT11230
Project 21.1 Hygrothermograph230
Chapter 22 Matrix Keypad237
Project 22.1 Matrix Keypad237
Chapter 23 Infrared Motion Sensor247
Project 23.1 Sense LED247
Chapter 24 Ultrasonic Ranging253
Project 24.1 Ultrasonic Ranging253
Chapter 25 Attitude Sensor MPU6050261
Project 25.1 Read MPU6050261
Chapter 26 Webiopi & IOT269
Project 26.1 Remote LED269
Chapter 27 Solder Circuit Board274
Project 27.1 Solder a Buzzer274
Project 27.2 Solder a Flowing Water Light278
What's Next286

Freenove Ultimate Starter Kit

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