powerswitch / led-commander-16-2

About

With this project, I try to reverse engineer the saved files of the Stairville LED commander 16/2. It's a DMX hardware to control up to 16 LED fixtures with both scenes and chases, but it's cumbersome to program. As it supports to export and import all settings to a USB flash drive, we are able to reverse engineer the saved files in order to program it on PC.

Current state

Files are always 524.800 bytes in size. Current firmware version is 1.5.

Findings so far:

• 0x00000 - 0x00009 "succeeded", magic number
• 0x00200 - 0x5AAFF Block of scenes/chases. Each block is 0xB7 in size, containing values (0x9F), number of set values and flags (?)
• 0x5AB00 - 0x5AB53 Names of Channels / Pan / Tilt / Aux (fixed size, \0 padded)
• 0x5AB54 - 0x5AD53 DMX Channel assignment
• 0x5AD54 - 0x5AD83 Number of chase steps per chase (16-bit), 0x05 suffix
• 0x5AD84 - 0x5AD88 "acme\00"
• 0x5AD89 - 0x5AF88 Block of 0x02
• 0x5AF89 - 0x6A988 Chaser step mapping to scene block (16-bit, 2000 per chase)
• 0x6A989 - 0x6A98C Random stuff (hopefully not a checksum)
• 0x6A98D - 0x6A99C Virtual Dimmer enabled (per fixture)
• 0x6A99D - 0x6AA3C Virtual Dimmer enabled (per fixture / channel)
• 0x6AA3D - 0x801FF Block of FF, probably not used