Changes between Version 2 and Version 3 of ak2tousb
- Timestamp:
- Aug 8, 2010, 11:54:07 AM (14 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
ak2tousb
v2 v3 3 3 4 4 == Hardware == 5 [http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/circuit kicad files] 5 6 Very simple hardware : 6 7 * atmega8 chip clocked at 16MHz (likely 12MHz would also work) … … 13 14 14 15 == Bootloader == 16 [http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/usbbootloader Bootloader] 15 17 I 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). 16 18 17 19 == Software == 20 [http://akina.pulkomandy.ath.cx/projects/avrstuff/browser/aktousb/code Source code] 18 21 The software is quite simple. 19 22 The usb part was heavily based on other v-usb projects, mainly the Dulcimer, a replacement board for IBM Model M keyboards.