diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -1,5 +1,6 @@ This is a Rotary-Dial-to-USB-Interface, based on the USB AVR Lab -(http://www.ullihome.de/wiki/USBAVRLab/index). +(http://www.ullihome.de/wiki/USBAVRLab/index). For schematics, +see http://www.ullihome.de/wiki/USBAVRLab/Download This is a tiny board with an ATMEGA8 speaking USB using the V-USB library. It features a 10-pin-port with some AVR pins routed out, @@ -8,6 +9,11 @@ ISP adapter, using USB. The Rotary-Dial-to-USB-Interface expects a rotary dial to be attached against PB4/5. +When you look at the front of the connector: + ____ ____ +| 9 7 . . . | Attach the two cables for the idle switch at 9 and 0. +| 0 8 . . . | Attach the two cables for the dial pulse switch at 7 and 8. + ----------- (0 and 8 are routed to GND, 9 and 7 to PB4 and PB5.) The program expects the "idle"-switch to be open when the dial is idle, and to be closed when the rotary dial is not in its idle position. @@ -20,7 +26,7 @@ additional drivers are needed. If you want to enter the bootloader, then generate more than 17 dial pulses by -dialing a zero, not letting the dial go fully back into idle position yet, +dialing a zero, not letting the dial return fully into idle position yet, and pulling it to zero again. |