Changes between Version 2 and Version 3 of ak2tousb


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Timestamp:
Aug 8, 2010, 11:54:07 AM (14 years ago)
Author:
pulkomandy
Comment:

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  • ak2tousb

    v2 v3  
    33
    44== Hardware ==
     5[http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/circuit kicad files]
    56Very simple hardware :
    67 * atmega8 chip clocked at 16MHz (likely 12MHz would also work)
    … …  
    1314
    1415== Bootloader ==
     16[http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/usbbootloader Bootloader]
    1517I used the USBaspLoader, which takes some space (1024 bytes) on the device but is easy to work with and appropriate for this kind of devices. There is a jumper on the board you have to fit to enable upgrade mode. Else it will start in regular mode and act as a keyboard. This allows easy development (no need for an ISP connector, nor an usbasp once you have bootloaded the atmega).
    1618
    1719== Software ==
     20[http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/code Source code]
    1821The software is quite simple.
    1922The usb part was heavily based on other v-usb projects, mainly the Dulcimer, a replacement board for IBM Model M keyboards.