ATmega16

Serial communication (USART) with different frame size using AVR microcontroller

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The previous article explains serial communication using 8-bit data transfer. AVR microcontroller also supports serial data transfer with frame size of 5, 6, 7 and 9 data bits. The size of data frame can be adjusted according to application. For example, consider a system that needs to transmit only ASCII codes as data. In this […]

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How to use External (Hardware) Interrupts of AVR Microcontroller (ATmega16)

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This article introduces the concept of interrupts and the different types of interrupts in AVR Microcontroller (ATmega16). Interrupt as the name suggests, interrupts the current routine of the microcontroller. Microcontroller executes instructions in a sequence as per the programs. Sometimes there may be a need of handling planned and higher priority events instantaneously that might

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How to interface LED with AVR Microcontroller (ATmega16)

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ATmega16 has 32 I/O pins to communicate with external devices.  Before interfacing with external devices, these pins must be cofigured as input or output pin. This article demonstrates the basic I/O operation of ATmega 16 using LEDs. All the four ports can be configured to read an input from some external device or to give

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How to interface keypad with AVR microcontroller (ATmega16)

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Keypad is most widely used input device to provide input from the outside world to the microcontroller. The keypad makes an application more users interactive.  The concept of interfacing a keypad with the ATmega16 is similar to interfacing it with any other microcontroller. The article of Interfacing keypad with 8051 can be referred for detailed

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How to interface Servo Motor with AVR Microcontroller (ATmega16)

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Servo motors find huge applications in industries in the field of automation, control & robotics. The servo motors are well known for their precise control and work on the principle of servo mechanism. The servo motors can be made to run at precise angle using PWM. The PWM (pulse width modulation) is the basic working

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How to take input from a particular pin of ATmega16

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For understanding the human needs a system must be able to take input from user. The devices which can be used to take input for a system are keypad, touch screen, etc. In the article LED blinking, the microcontroller drives the LED or in embedded language the microcontroller was set to give o/p, this article gives

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How to interface serial ADC0831 with AVR microcontroller (ATmega16)

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ADC is an electronics device that converts the analog signals to digital number proportional to the magnitude of voltage. The ADC chips like ADC0804, ADC0809 etc., give 8-bit digital output. The controller device needs eight pins to receive the 8-bit data (For more details about ADC refer to Using Inbuilt ADC of AVR). Some applications

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How to configure Watchdog Timers of AVR Microcontroller (ATmega16)

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Some high end applications require multiple or critical calculations to be done by the microcontroller. This may lead to cases when the controller enters into wrong or infinite loops. As a result of this, the system either hangs up or gets crashed. The solution to overcome these situations is to automatically reset the system whenever

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How to interface GPS with AVR microcontroller (ATmega16)

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GPS modem is a device which receives signals from satellite and provides information about latitude, longitude, altitude, time etc. The GPS navigator is more famous in mobiles to track the road maps. The GPS modem has an antenna which receives the satellite signals and transfers them to the modem. The modem in turn converts the

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