Minimum System of ATMEGA8

ATmega8 is a low power 8-bit microcontroller with RISC architecture. This microcontroller can execute a command dalah one period a clock for each instruction. Some features of the ATmega8 are as follows: 1. 8 Kbyte Flash Program 2. 512 Kbyte EEPROM 3. 1 Kbyte SRAM 4. 2 8-bit timers and one 16 bit timer 5. Analog to digital converter 6. USART 7. analog comparator 8. Two wire interface (I2C) Pin out of the ATmega8 can be seen in the following picture. As we know, to make a usb downloader using ATMEGA8 we must have a minimum system of the uC. This circuit will help you to load the firmware to ATMEGA8. This is the PCB layout of minimum system.           Top view                                                                     ...

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Introduction Parallel and Serial (USB) Downloader

To flash the program into the AVR uC requires an equipment downloader. There are two types parallel downloader and serial downloader. Parallel downloader requires a computer that has a parallel port as DB25. Serial downloader can be used on any computer that has a serial port like a usb port. Because now it no longer produced a computer that has a parallel port then we should make a serial downloader (usb downloader), advantages of the usb downloader is that it can be used on all computers because all computers have USB ports (portable), fast data delivery due to a computer now has a clock is high (> 1GHz). So do not worry about the delivery will be longer because the computer now has a high speed. Example USB downloader for AVR This...

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AVR Minimum Kit Ready to Used

If you want to learn about the AVR but does not have its minimum system kit or you do not have much time to make it. Here I offer minimum AVR system kit at a price of $16. If you are interested, you can email me or leave a comment. This is a picture of the product If want to create your system with yourself, here are pictures of the PCB layout The kit can be used for ATmega8535 or ATmega32 microcontroll...

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Example Project with Eagle 3D

USBasp  Minimum System of ATMEGA8  50W Amplifier AVR and The Minimum System    The Symmetric Power Supply  The above picture just pictures, not to go to the trade. You can get a tutorial from this link http://www.societyofrobots.com/electronics_Eagle3D_tutorial.shtml, I learn the article in there and now I can construct my project to 3D vie...

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A Simple 50W Amplifier Circuit

Amplifier is a device to increase the power of signal by using external energy sources. It can be used to strengthen the voice of a musical instrument or other sound source to connect the speaker on its output. This is a simple Amplifier which is built with LM741, transistors are connected in such a way that produces 50W of power. For good operation, the circuit requires a symmetrical power supply (+30 V and-30V) with a range of 3A of current( for mono, if you want stereo use power supply with 5A of current). The circuit above are C1 = 4.7 uF at the input, if you want to lower frequency signals that increase the value of C1, or if you want to strengthen the higher frequency signals then decrease the value of C1. Potentiometer (R9) to adjust...

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Inverter 100W with IC 4047

This is a schematic inverter 100W, to produce 100W of power we use 12V10A car battery. R1 is a potentiometer that is used to set the output frequency to be at 50-60 Hz, which the inverter will be used for our home electronics. If only to try, you can use the step-down transformer CT in reverse, the input at 9V-0-9V and the output at 220V. Transformer 10A that we must use in order to produce 100W of power. This Circuit is built with a 4047 to generate pulse, two of 2N3055 and a transformer  to increase power. You can replace the transistor with other transistor if have a same spec. list of components: IC 1        4047 R1          250K Potensiometer C1    ...

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