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DIY – Waveform Generator using AVR Microcontroller

To interface 8-bit DAC with AVR microcontroller ATMega32 and generate different waveforms like Square Wave, Sine Wave, Triangular Wave, Staircase Wave and Saw-tooth Wave. Instruments ·         AVR Development Board ·         ADC – DAC card ·         Digital Storage Oscilloscope (DSO) ·         Power Supply Apparatus ·         Connecting Wires ·         CRO Probes ·         General purpose PCB Components ·   ...

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Fully Customized Device On/Off Timer

Timers are used in many different applications for example in Industrial Applications, to switch ON or switch OFF any device or a machine load for a specific period of time. In the same way the timers are used in Domestic Appliances like in Air Conditioners, Microwave Ovens, Washing Machines, Food Processors etc. The applications for the timers could also be seen in Military Applications and Space Applicati ...

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SPI (serial peripheral interface) using AVR microcontroller (ATmega16)

There are different protocols for serial communication between two deceives like, USART, SPI, I2C etc. Before selecting any communication protocol, data transfer rate is an important parameter. SPI transfers data at high speed data. AVR microcontroller contains on chip SPI interface. This article will explore the hardware configuration and programming of SPI. Serial Peripheral Interface is a synchronous, fu ...

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How to use I2C / TWI (Two Wire Interface) in AVR ATmega32

This article explores the TWI interfacing between two ATmega32 controllers. Readers are advised to go through TWI Communication and TWI registers of ATmega32 before going further. TWI works in four modes: 1.        MASTER as a transmitter. 2.        MASTER as a receiver. 3.        SLAVE as a receiver. 4.        SLAVE as a transmitter. Generally modes 1 & 3 and modes 2 & 4 are used together. This art ...

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100 LED 10 band Audio Spectrum atmega32 MSGEQ7 with peak hold and fall down

 MSGEQ7 and atmega32  based  Audio Spectrum. 10 level height and 10 band width. peak hold and fall down display style Step 1: Components list components list ------------------------------------- 1, atmega32 - 1 2, MSGEQ7 Audio spectrum ic -1 3, veroboard - 1 4, RED  Bar graph  LED  -10 5, 20 pin ic base -   10 6, BC557 -10 7,Resistors - 330Ω  -10 -  8.2KΩ  -1 -  200kΩ  -1 - 22k Ω    -2 - 10k Ω    -1 8, ULN ...

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Playing video on nokia color LCD using an ATmega32

video Playing video on nokia color LCD using an ATmega32 Hi, I am introducing my new video player made using an atmega32 microcontroller and nokia color LCD. I got a 65K color LCD from an old nokia 6030 mobile phone.  I directly soldered 10 thin enamelled coper wire from the 0.5 cm square area of the thin flexible pcb of the LCD to a berg strip fixed on another board. For me it was the most difficult part o ...

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Using Atmega32 with Arduino IDE

Over time I have used all kinds of Atmel microcontrollers in various projects. One of the most suitable was ATmega32. I have a small collection of development boards for Atmega32/16, some bought as-is, some made on stripboard. Although the original Arduino boards offers a pleasant experience and a rapid development of the projects, when it was necessary to "extract" these projects to give them final shape I ...

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