IR transmitter with Raspberry Pi

 IR Remote set up with Raspberry Pi

Try to set up IR transamitter with  Raspberry Pi!!

IR is one of the low cost communication method we can set up between devices. When started searching for IR transmitter with Raspberry Pi, I came to know that there is a pretty good module LIRC already for IR set up in Raspberry Pi
 http://www.lirc.org/


Install LIRC with following command

sudo apt-get install lirc

edit the /etc/modules  to add the following lines

lirc_dev
lirc_rpi gpio_in_pin=23 gpio_out_pin=22


Follow the instructions in the link http://tsagi.me/electronics/2013/06/07/universal-raspberry-pi-remote/

To start and stop LIRC

sudo /etc/init.d/lirc stop
sudo /etc/init.d/lirc start

 

 

 

Connection diagram and Device Image

 

It pretty easy to connect the IR  to Raspberry Pi,  you need to know the VCC and GND both VCC and Raspberry Pi. 

 

IR Key detection Pulse in Raspberry Pi with LIRC

There are steps where you can map the keys in the remote and make your own IR remote ...... interesting



http://randomtutor.blogspot.in/2013/01/web-based-ir-remote-on-raspberry-pi.html

https://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/robot/cheat_sheet/

http://circuitdesign4u.blogspot.in/2013/02/remote-operated-lighting-system.html

http://tsagi.me/electronics/2013/06/07/universal-raspberry-pi-remote/

i2c connection in Raspberry Pi

What is i2c ?

 

I²C (Inter-Integrated Circuit), pronounced I-squared-C, is a multi-master, multi-slave, single-ended, serial computer bus invented by Philips Semiconductor, known today as NXP Semiconductors, used for attaching low-speed peripherals to computer motherboards and embedded systems. Alternatively I²C is spelled I2C (pronounced I-two-C) or IIC (pronounced I-I-C).

 

I heard about i2c , but never experimented something with i2c connections. Now I have an opportunity to do that with Raspberry pi. Its kind of Master -Slave communication or address to address communication.Advantage of this is , with 2 pins ( SDA,SDL) you can control many pins of  a device or IC which having i2c provision.

 

Raspberry Pi have i2c communication provision:

 

 

 

Raspberry  i2c set up procedure:

 

 

 

To use the I²C module with the Raspberry Pi, follow the below steps

1.Enable the I²C driver on the Pi by typing sudo vi /etc/modprobe.d/raspi-blacklist.conf

comment the line blacklist i2c-bcm2708 with an #
and save the file

2.Edit the modules file with the command sudo vi /etc/modules and add "i2c-dev" to a new line, then save the file

3.Install the i2c-tools package: sudo apt-get install i2c-tools.

4.Install the python 'smbus' module: sudo apt-get install python-smbus.

5.reboot raspberry pi

6.After the reboot, test to see if there is a device connected with the command i2cdetect -y 0

 

Activate the I²C device with sudo modprobe i2c-dev. This must be done whenever the Pi is restarted.

 

 

 

 

Reference :

 

https://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/configuring-i2c

http://en.wikipedia.org/wiki/I%C2%B2C

http://www.robot-electronics.co.uk/htm/raspberry_pi_examples.htm

https://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/turing-machine/two.html

Some Low Cost Boards Electronics Guys has to play with

 

 Teensy 3.0 - https://www.pjrc.com/teensy/

Launch Pad - http://www.ti.com/tool/msp-exp430g2

Ardunio - http://www.arduino.cc/

Raspberry pi - http://www.raspberrypi.org/