Changes between Version 3 and Version 4 of ak2tousb


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Timestamp:
Aug 8, 2010, 11:54:42 AM (14 years ago)
Author:
pulkomandy
Comment:

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  • ak2tousb

    v3 v4  
    44== Hardware ==
    55[http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/circuit kicad files]
     6
    67Very simple hardware :
    78 * atmega8 chip clocked at 16MHz (likely 12MHz would also work)
    … …  
    1516== Bootloader ==
    1617[http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/usbbootloader Bootloader]
     18
    1719I 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).
    1820
    1921== Software ==
    2022[http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/code Source code]
     23
    2124The software is quite simple.
    2225The usb part was heavily based on other v-usb projects, mainly the Dulcimer, a replacement board for IBM Model M keyboards.