carrerashark/README

Wed, 30 Nov 2011 14:07:57 +0100

author
Malte Bayer <mbayer@neo-soft.org>
date
Wed, 30 Nov 2011 14:07:57 +0100
changeset 21
8b7cdb655e7b
parent 12
a399f9d5e672
child 31
a8f082503782
permissions
-rw-r--r--

finished track switch to support single lane

CarreraShark
Rail data packet sniffer

Hardware: Mega16, 8mhz
    PD2 = Controller Input
    |>o = Inv Schmitt Trigger for signal buffering (74hc14)

    [RAIL+] ------[33kohm]------+-----|>o--|>0----[PD2]
                                |
                                --[10kohm]---
                                            |
    [RAIL-] --------------------------------+-----[GND]


Debug Pins:
    PD3 = Packet Start pulse
    PD4 = Bit timer pulse (50ns)
    PD5 = Cycle Sync: each low/high change == start of cycle (after program packet received)

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