Circuits & Schematics Microcontrollers Usage: avr - 2

11. An AVR Microcontroller Based Ethernet Device
    Circuits Networks Microcontrollers Usage Microchip ENC28J60
    .. to use it right from the start but there was a problem with interrupted clock signals at reset which caused sometimes the AVR to malfunction. I contacted microchip support about it but they did not seem to understand the problem. Maybe ...
    11-05-2009

12. HTTP/TCP with an Atmega88 Microcontroller (AVR Web Server)
    Circuits Networks Microcontrollers Usage
    .. This is a continuation of the article An AVR Microcontroller Based Ethernet Device . The hardware is still the same (ENC28J60 + atmega88). The software is now ...
    12-05-2009

13. The Tuxgraphics AVR NTP Clock
    Circuits Microcontrollers Usage Domestic
    .. In other words NTP can be very very accurate. For our purposes it is however enough if we just evaluate the seconds. The AVR NTP clock synchronizes at startup with a NTP server and uses then a timer interrupt to maintain time locally. Every ...
    13-05-2009
14. Cheap Sound Sensor for AVR
    Circuits Audio Microcontrollers Usage
    Alexander Weber I searched the web for a cheap method to let the ATmega respond to sound. My knowledge in analog circuits is very limited, but what I do remember, is that you can not attach a electret mircophone to a controller pin. The signal of ...
    02-12-2009
15. Four Channel PWM Controller. Part 1
    Circuits Microcontrollers Usage
    Pulse width modulation (PWM) is a useful control technique for such applications as light dimming and motor speed control. The aim of this project was to design a low cost PWM controller that would be useful in many areas where PWM is employed. The ...
    01-02-2010
16. Four Channel PWM Controller. Part 2
    Circuits Microcontrollers Usage
    .. of work and the basic characteristics of the device. All of the ATMega32 software was written in assembler within the AVR Studio IDE environment. This has allowed easy simulation and debugging of the code, and quick transfer of the ...
    08-02-2010
17. AVR TV terminal
    Circuits Microcontrollers Usage Interfaces
    Introduction When you use microcontrollers in your designs, sometime you face a problem how to show user required data. Several LEDs, 7 segment display or LCD module can be solution. But if you must show a lot of information simultaneously, it can ...
    23-03-2010
18. The smallest handheld automatic one-chip AVR-based DC voltmeter
    Circuits Microcontrollers Usage Measurement
    .. version 2.31E. After the Reset procedure (applying power for the first time or after pressing the reset button), the AVR processor initializes TIMER0 and TIMER1. The TIMER0 is configured for timebase and LCD refreshing routine. The 37 ...
    25-03-2010
19. 2 channel RF remote control on AVR
    Circuits Microcontrollers Usage Wireless
    .. for more battery economy and safe transmition of the data. The battery economy is made it by the use of powerdown mode of AVR. In this case the AVR goes to sleep with less than 1uA (microampere) current and wait for external interrupt on pin ...
    14-04-2010
20. AVR Phone Recorder & Telephony Platform. Part 1
    Circuits Microcontrollers Usage Telephone
    .. not paying attention and a battery backup system. Therefore, our device can be seen as a template for a reasonably generic AVR-based telephony platform that can be easily adapted for other applications, such as an answering ...
    21-04-2010

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