Author - Ligo George

Raspberry Pi Model B

Getting Started with Raspberry Pi

Raspberry Pi is an ultra low cost credit card sized computer developed by Raspberry Pi Foundation with an intention to teach computer programming to school students. You can setup a computer with your home TV under 60$. Please read the article Raspberry Pi for more details. You need the following items to get started with Raspberry Pi : Class 4 SD Card (minimum 4GB) SD Card Reader to write OS files to the SD Card (You may use your laptop's memory card reader). Micro...

July 5, 2013By Raspberry Pi, Tutorials0 CommentsRead more...
Push Button Switch

Using Push Button Switch with PIC Microcontroller

I hope that you have already read the first tutorial of Hi Tech C, LED Blinking using PIC Microcontroller. In that tutorial we blink LEDs connected to PORTB by writing to entire PORT and TRIS registers. In some cases we may want to set or reset individual bits of these registers. For that we can use the bit addressable feature of these registers. We have already seen in the previous tutorial that TRIS register is used to set the direction...

June 30, 2013By Hi-Tech C, PIC Microcontroller, Tutorials, , , , 20 CommentsRead more...
ASK RF Modules - Trasmitter and Receiver

Wireless Transmitter and Receiver using ASK RF Module

A wireless radio frequency (RF) transmitter and receiver can be easily made using HT12D Decoder, HT12E Encoder and ASK RF Module. Wireless transmission can be done by using 433Mhz or 315MHz ASK RF Transmitter and Receiver modules. In these modules digital data is represented by different amplitudes of the carrier wave, hence this modulation is known as Amplitude Shift Keying (ASK). Radio Frequency (RF) transmission is more strong and reliable than Infrared (IR) transmission due to following reasons : Radio...

June 23, 2013By Electronics, 161 CommentsRead more...
HT12D

HT12D Decoder IC for Remote Control Systems

HT12D is a 212 series decoder IC (Integrated Circuit) for remote control applications manufactured by Holtek. It is commonly used for radio frequency (RF) wireless applications. By using the paired HT12E encoder and HT12D decoder we can transmit 12 bits of parallel data serially. HT12D simply converts serial data to its input (may be received through RF receiver) to 12 bit parallel data. These 12 bit parallel data is divided in to 8 address bits and 4 data bits. Using...

June 16, 2013By Electronics, IC5 CommentsRead more...
HT12E

HT12E Encoder IC for Remote Control Systems

HT12E is a 212 series encoder IC (Integrated Circuit) for remote control applications. It is commonly used for radio frequency (RF) applications. By using the paired HT12E encoder and HT12D decoder we can easily transmit and receive 12 bits of parallel data serially. HT12E simply converts 12 bit parallel data in to serial output which can be transmitted through a RF transmitter. These 12 bit parallel data is divided in to 8 address bits and 4 data bits. By using...

June 12, 2013By Electronics, IC11 CommentsRead more...
TSOP17XX Pin Out

IR Transmitter and Receiver using 555 Timer and TSOP1738

IR Transmitter and Receiver pair can be easily made using 555 Timer, IR LED and TSOP1738 IR Receiver. This can be used for remote controls, burglar alarms etc. TSOP1738 is a very commonly used IR receiver for PCM remote control systems. It has only 3 pins, Vcc, GND and Output. It can be powered using a 5V power supply and its active low output can be directly connected to a microcontroller or microprocessor. It has high immunity against ambient light...

June 1, 2013By 555 Circuits, Electronics, , 27 CommentsRead more...
TSOP1738

TSOP1738 – Receiver for IR Remote Control Systems

TSOP1738 TSOP17XX is a commonly used IR receiver for Infrared PCM remote control systems. It is used in TVs, DVD Players, Burglar Alarms etc. This component is built with PIN Diode, Preamplifier and internal filter for PCM (Pulse Code Modulation) frequency and its epoxy package is designed as an IR filter. These are available with different carrier frequencies out of which TSOP1738 is very common whose carrier frequency is 38KHz. The output of TSOP17XX receivers can be directly connected to a...

May 31, 2013By Electronics, IC3 CommentsRead more...
Raspberry Pi Foundation Logo

Raspberry Pi

Raspberry Pi (also known as RPi or RasPi in short) is an ultra low cost single board credit card sized computer developed with an intention of teaching computer programming to school students. It is developed in United Kingdom (UK) by Raspberry Pi foundation which is a registered charity. It follows licensed manufacturing and are sold in partnership with  Premier Farnell/Element 14 and RS Components. We can buy Raspberry Pi online from these companies. Actually it is a miniature ARM based PC which can...

May 30, 2013By Raspberry Pi2 CommentsRead more...
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