Beginners in electronics , especially into microcontrollers normally lack a programmer for embedding the program into the controller. There is always an option go and buy one but considering the cost of making one and the purchase of a new one, making one is easier and cheaper. This is an AVR programmer. The cost incurred to make one is about 50Rs in total cause it only involves a few resistors, a transistor ,7805 and a serial port connector.
I have made and tested this programmer circuit. The schematic is connected as shown below.
The layout is given below.
In order to interface this to the microcontroller, The six pins in the layout to be connected to the six pins of the microcontroller. The pinout of the layout from the top to bottom is as MOSI, MISO , SCK, ~RESET, Vcc and Gnd. The software to be used is called ponyprog , you can download it from here for free http://www.lancos.com/prog.html.
We can also make USB programmer at home but it requires a controller in its design and for programming that controller we need a programmer.
I have made and tested this programmer circuit. The schematic is connected as shown below.
The layout is given below.
In order to interface this to the microcontroller, The six pins in the layout to be connected to the six pins of the microcontroller. The pinout of the layout from the top to bottom is as MOSI, MISO , SCK, ~RESET, Vcc and Gnd. The software to be used is called ponyprog , you can download it from here for free http://www.lancos.com/prog.html.
We can also make USB programmer at home but it requires a controller in its design and for programming that controller we need a programmer.
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