rpi-examples

Raspberry Pi examples

Videos

• Buzzer: https://www.youtube.com/watch?v=j8HnKM58QXk
• LM75A: https://www.youtube.com/watch?v=pyg27uj0Xns
• HTU21D: https://www.youtube.com/watch?v=A_yruJtYUwE

Notes

If you are interested in running any of the examples for I2C written in C/C++ as a regular user (not root) perform the following steps:

• Remove line "wiringPiSetup();" in "HTU21D_test.c"
• Add your user in "i2c" group

Buzzer

C

Beep

Simple application to test if a piezo buzzer attached to pin 11 is working.

Install wiringPi and after that execute the following command to build the application:

cd buzzer/c/
gcc beep.c -o beep -lwiringPi -std=c99

Execute the following command to run the application:

sudo ./beep

Star Wars

Implementation of the Imperial March from Star Wars.

Install wiringPi and after that execute the following command to build the application:

cd buzzer/c/
gcc starwars.c -o starwars -lwiringPi -std=c99

Execute the following command to play the Imperial March:

sudo ./starwars

TSL2561

Install i2c tools:

sudo apt-get install i2c-tools

Enable i2c on Raspberry Pi with Raspian GNU/Linux distribution:

sudo raspi-config

Go to Advanced Options > A7 I2C and reboot the board

Verify that TSL2561 is detected on i2c address 39 on bus 1:

pi@raspberrypi:~ $ i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- 39 -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

Build and run the source code

cd TSL2561/c/
make
./TSL2561_test

MAX44009 Ambient Light Sensor Module

Build and run the source code

cd MAX44009/c/
make
./MAX44009_test

The example written in the C programming language has been cotributed by Pixel_K.

PN532 NFC Module

• Install Adafruit Python PN532:

sudo apt-get update
sudo apt-get install build-essential python-dev git
cd ~
git clone https://github.com/adafruit/Adafruit_Python_PN532.git
cd Adafruit_Python_PN532
sudo python setup.py install

• Clone rpi-examples:

cd ~
git clone https://github.com/leon-anavi/rpi-examples.git

• Save data to RFID/NFC card

cd ~/rpi-examples/PN532/python
sudo python rfid-save.py

• Listen and scan for RFID/NFC cards

cd ~/rpi-examples/PN532/python
sudo python rfid-scan.py