ইউ এস বি এ এস পি এর জন্য নতুন মাস্ক
এই মাস্ক গুলো থমাস ফিচ্যাল এর বানানো ইউ এস বি প্রোগ্রামার এর জন্য আমি বানিয়েছি। (http://www.fischl.de/usbasp/)
These masks are designed by me for the USB ASP Programmer designed by Tomas Fischl (http://www.fischl.de/usbasp/)
I used series resistors with MOSI MISO SCK and RST lines. They are used for protection of the ATmega8 of the programmer. They can be replaced with short circuits like the original design.In my design, the resistors probably causes some rise time issue, so the programmer will not work unless the slow sck jumper is shorted out. And power is not drawn from the USB port, and taken from the external circuit. Reversing polarity of Vcc and GND will certainly cause the programmer to die. I included a Zener Diode in my design to limit the reverse polarity voltage, but don't know how effective it would be. I'll try to make another design with 5 wire-output, that draws power from USB port.
These masks are designed by me for the USB ASP Programmer designed by Tomas Fischl (http://www.fischl.de/usbasp/)
I used series resistors with MOSI MISO SCK and RST lines. They are used for protection of the ATmega8 of the programmer. They can be replaced with short circuits like the original design.In my design, the resistors probably causes some rise time issue, so the programmer will not work unless the slow sck jumper is shorted out. And power is not drawn from the USB port, and taken from the external circuit. Reversing polarity of Vcc and GND will certainly cause the programmer to die. I included a Zener Diode in my design to limit the reverse polarity voltage, but don't know how effective it would be. I'll try to make another design with 5 wire-output, that draws power from USB port.
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Hello Sajid,
ReplyDeleteI want to program atmel Atmega chips with usb port. Which usb programmer should I build? I found many articles on your website. Which one should I follow.
Thanks for publishing nice articles...
Could you please post them in some file sharing sites like youtube or something?
ReplyDeleteThanks
I wouldn't post any illegal links in my website. Thank you
ReplyDeleteSajid vaia ami ekta burner bananor jonno onek try kore astechi but parchi na. Ami apnar design ta dekhe mugdho holam. But ami jante cai apni j atmega-8 use korechen setate ki kono programm dite hobe? naki emnitei connection dilei hoye jabe? jodi programm dite hoye tobe please program ta dile apnar proti kritoggo thakbo.
ReplyDeleteDhonnobad, Saiful Islam