Page 115 - TCS ICT Book 8

The City School 2021-2022

Hardware of this project is made simpler for your handling and does not require any

soldering or messy wiring. We will use the Pi Shield on the top of the GPIO pins of Pi as
a stack and connect the SONAR sensor on the Pi shield. But this time we will power the

Pi via power adapter or battery outlet available on the Pi Shield.

Equipment needed

Following componentes are required for this project:

• Sonar Sensor
• Pi Shield Python is one of the official

• Raspberry Pi programming languages at Google
and YouTube is one of Google’s
• Power Adapter / Battery products that are powered by Programming Robots & Single-Board Computers
Python.
• Keyboard, Mouse & LCD

Hardware of this project is made simpler for your handling and does not require any

soldering or messy wiring. We will use the Pi Shield on the top of the GPIO pins of Pi as
a stack and connect the SONAR sensor on the Pi shield. But this time we will power the

Pi via power adapter or battery outlet available on the Pi Shield.
Interfacing code:

import RPi.GPIO as gpio

import time as t
gpio.setmode(gpio.BCM)

gpio.setwarnings(false)
trigger=17

echo=27
gpio.setup(trigger, gpio.OUT)

gpio.setup(echo, gpio.IN)
def distance():

gpio.output(trigger,True)
t.sleep(0.0001)

gpio.output(trigger,False)
while gpio.input(Echo) == 0:

StartTime=t.time()
while gpio.input(Echo) == 0:

StopTime=t.time()

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