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Switching between Red, Green and Blue (or Blue1 or/and Blue2 for an RGBB type) using AVR microcontroller

Switching between Red, Green and Blue (or Blue1 or/and Blue2 for an RGBB type): An RGB LED is a LED which has three (or four for an RGBB type) semi-conductor LED’s in one normal housing i.e. standard 5 mm. The Red LED is made of Gallium Arsenide Phosphide on Gallium Phosphide, the Green LED is […]

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AVR Based Operating System using ATMega32 microcontroller

kaOS project is real-time, multithreaded, preemptive operating system for the Atmel Mega32 microcontroller. It can loads and executes programs from a Secure Digital or MMC card. The system waits for a card to be inserted and a reset button to be pressed, at which point a program is loaded from the card and executed. At

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3D Color LED Graphics Display using ATmega32 microcontroller

This 3-dimensional graphics display system which named as MaJaTron consists of 125 RGB LEDs arranged in a cube of 5x5x5 dimension. Each LED is a multicolor Red, Green and Blue LED and the control circuit of the system can individually control the intensity of each color, thereby, creating a full color, graphics system. Each LED

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A GLCD connected to an AVR microcontroller using ATmega8 microcontroller

A GLCD connected to an AVR microcontroller The PVG120602EGE is a 128×64 pixel graphic (grey) LCD with lightblue EL backlight and two KS0108 controller chips and one KS0107 line (colums) driver (64 display lines COM1 – COM64) The first KS0108 drives segments 1 to 64 (Y1 – Y64), the second drives segments 65 to 128

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Open Source AVR Temperature Controller using ATmega48 microcontroller

The open source project allows you to control DC appliances based on the temperature of two thermistor inputs. It uses AVR ATmega48 as main processor. The controller has both green and white LEDs to indicate status. The project output is connected to N-Channel MOSFET, AOD444, for switching with current up to 4A. For higher current

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Controlling 7-segments LED displays using AVR microcontroller

The many posibilities….Non Multiplexed: 1. One or two displays directly to the i/o’s 2. One display with a 74LS247 3. Two displays with a 74HC595 and two 74LS247 Multiplexed: 1. Two displays with a 74LS247 and 2 i/o’s 2. Two displays with a 74HC595 and 2 NPN/PNP * 3. With a special driver IC e.g.

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Programming AVR ATxMega using USBasp and ATxmega microcontroller

ATxmega programmer has different interface than 8-bit AVRs. It uses PDI interface instead of ISP. If you don’t want to buy new programmer for ATxmega you can try this little hack done by Szu. He uses USBASP (USB in-circuit programmer for Atmel 8-bit AVR controllers) with some modification to program AVR ATxmega. The hack convert

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Head-Controlled Keyboard And Mouse For Disabled, using AVR and ATMega32 microcontroller

Easy Input is a head-controlled keyboard and mouse input device for paralyzed users. The system is built based on AVR ATMega32. It uses user’s head movement to control mouse movement on the monitor and user’s eye blinking to activate mouse click. Two main sensor used for this project are Freescale MMA6560Q accelerometers to detect head

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