11:69c2a1408619 | 12:a399f9d5e672 |
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1 CarreraShark | |
2 Rail data packet sniffer | |
3 | |
4 Hardware: Mega16, 8mhz | |
5 PD2 = Controller Input | |
6 |>o = Inv Schmitt Trigger for signal buffering (74hc14) | |
7 | |
8 [RAIL+] ------[33kohm]------+-----|>o--|>0----[PD2] | |
9 | | |
10 --[10kohm]--- | |
11 | | |
12 [RAIL-] --------------------------------+-----[GND] | |
13 | |
14 | |
15 Debug Pins: | |
16 PD3 = Packet Start pulse | |
17 PD4 = Bit timer pulse (50ns) | |
18 PD5 = Cycle Sync: each low/high change == start of cycle (after program packet received) |