eXtreme Electronics

Wireless Camera, IR Sensor, Stepper Motors, Switch Boxes – New Products

Avinash — Tue, 24 Jan 2012 05:31:31 +0000

Wireless AV Camera Sharp IR Rangefinder Stepper Motors DPDT Switch Box 6 Leg DPDT Switch

High Power Multiplexed Seven Segment LED Display Driver

Avinash — Fri, 06 Jan 2012 08:22:03 +0000

One of the most common place where small MCUs are used is to drive big seven segment displays in public area. For example the bank token number, flight or train schedule, train coach number, production volume (in factories), current forex(in banks) or gold rates etc. Since these are public display they should be big (and [...]

DS1307 Based RTC Module

Avinash — Thu, 29 Dec 2011 08:28:38 +0000

An RTC Module or a Real Time Clock Module helps a system keep track of current time (hour, minutes and seconds). It automatically increments the time without any help from the host (microcontroller). Other benefit is that it has a backup power supply from a small coin cell that help it maintain the time in [...]

PC Controlled Robot

Avinash — Sun, 25 Dec 2011 12:36:21 +0000

In this tutorial we will discuss a simple PC controlled robot. The Robot PC link will be a RS232 serial line. The robot will have only five commands. Move forward (RS232 char 'F' or 'f') Move backward (RS232 char 'B' or 'b') Turn Left (RS232 char 'L' or 'l') Turn Right (RS232 char 'R' or [...]

We wish you a Merry Christmas!

Avinash — Sun, 25 Dec 2011 04:00:14 +0000

We wish you a Merry Christmas!

High Voltage Solenoid Interface with MCU

Avinash — Mon, 19 Dec 2011 04:20:07 +0000

This mini article provides a small circuit idea to interface a 12V or 24V DC Solenoid (or relay) with a 3.3 or 5V microcontroller's i/o pins. Datasheets BD139 Power Transistor (For PINOUT refer this document)

GSM-GPRS Module SIM300

Avinash — Sat, 17 Dec 2011 04:28:08 +0000

GSM-GPRS Module SIM300 with sim card holder, RS232 interface, power supply, buzzer and audio interface. Nice for learning the SIM300 module. You can connect this to PC using a USB to Serial Adaptor and use terminal programs such as Realterm to send receive data. Buy SIM300 Module from our store.

Time Input Dialog for Graphic LCD

Avinash — Sat, 03 Dec 2011 07:57:39 +0000

GUI Frameworks of all modern OS like Windows, Linux (Qt & GTK+), MAC etc have a concept of standard dialogs. For example all applications running under Windows shows the same file open dialog for selecting a file. Similarly their are standard dialogs for folder selection, colour selection, font selection etc. This concept has several advantages, [...]

DS1307 I2C RTCC Interface using SoftI2C lib

Avinash — Wed, 30 Nov 2011 13:04:33 +0000

In the last tutorial, I explained you how to use our SoftI2C library to read and write a 24CXX series I2C EEPROM. Now I will continue our exploration and write a register access layer for the DS1307 chip. The DS1307 chip is a real time clock and calendar IC. The register access layer that we [...]

24CXX I2C EEPROM Interface using SoftI2C lib

Avinash — Sat, 26 Nov 2011 14:13:04 +0000

In this tutorial I will show you how to use our easy to use open source Soft I2C library to access a 24C64 EEPROM chip. We discussed the library in our previous tutorial. The functions developed in this tutorial will use services of the I2C library to read and write the EEPROM. The EEPROM access [...]

Software I2C Library for AVR MCUs

Avinash — Thu, 24 Nov 2011 07:16:42 +0000

Inter IC Communication or I2C is a two wire serial communication bus used to connect a variety of external peripheral with a microcontroller. Most common are EEPROMs, RTC, Port Expanders etc. Most leading MCUs comes with at least one dedicated I2C host adaptor built in. But some times we need more than one I2C interface [...]

Analog Clock on GLCD – Drawing the Face

rishi — Mon, 14 Nov 2011 12:05:51 +0000

Hello friends, In the previous tutorials of graphical lcd, we have learnt about the basic primitive and custom design functions. So drawing an analog clock on graphical lcd is a bit more advanced project. So it’s really exciting to do this project and for this we have to use a simple mathematical calculation and some [...]

Happy Diwali !

Avinash — Tue, 25 Oct 2011 07:54:37 +0000

Happy Diwali !

Tracked Wheel Robotics Platform

Avinash — Fri, 21 Oct 2011 06:07:59 +0000

Tracked Robot, Chain Links Tracked Robot, Chain Links Chain Links Connected Metal Connecters How to connect chain links. Complete Tracks with 18 links These tracks then can be fitted on the wheels. The track wheel set comes with the chain links, metal connecter and four plastic wheels. For more details [...]

eXtreme Burner Goes Social !

Avinash — Sat, 15 Oct 2011 14:37:12 +0000

eXtreme Burner AVR is Now on Facebook. You will notice the new Facebook button on the toolbar. Visit eXtreme Burner AVR's Facebook page. We hope you will it. eXtreme Burner - AVR Goes Social ! Other features added in version 1.2 New Icon set. Fuse bit editor, lets you view the name and function of [...]

STM32 Project – Digital Photoframe

Avinash — Sun, 11 Sep 2011 11:05:56 +0000

This is our first advanced project using a powerful 32bit MCU and all sort of modern technologies like Colour QVGA display, Micro SD Card and Embedded file system. We have made several project using 8 bit PICs and AVRs but those were simple and didn't use modern displays. In today's world every one owns several [...]

A Basic Touch-screen driver for STM32

Avinash — Sat, 20 Aug 2011 11:38:36 +0000

Today I completed the basic touch screen driver. The task included Learning the "Theory of Operation" of 4 wire resistive touch screens. Learning the about the working of AD7843 touch screen controller IC. Learning about the SPI peripheral of STM32 Writing basic SPI drivers (to init, read and write to SPI1) Writing basic drivers to [...]

New 28 PIN AVR Development Board

Avinash — Thu, 11 Aug 2011 14:29:45 +0000

We have launched a low cost 28 PIN AVR Development board for those you want to get started with AVRs on a budget. As this board provides a clean circuit for basic AVR connection you can learn to program hello world app (a LED blinky) in just few hours! If you are tired of wiring [...]

Got the TFT LCD + STM32F103VE MCU Up and Running !

Avinash — Tue, 02 Aug 2011 05:17:26 +0000

Hi All, I was working to interface 320x240 pixel TFT LCD based on ILI9325 controller with my 32 bit ARM MCU (STM32F103VE). Got to digest the whole datasheet of ILI9325, Learn about the FSMC (Flexible Static Memory Controller). Finally succeeded in initializing the LCD and writing to the GRAM. Then ported a part of ProGFX [...]

Working with Images in ProGFX

Avinash — Wed, 20 Jul 2011 14:32:36 +0000

ProGFX is a full-featured driver for KS0108 based Graphic LCDs. In this part we will learn how to use images and icon drawing functions of ProGFX.