For Brightsign Compact HD410, 810 & 1010

16 Input (Buttons), 16 Outputs (Lamp Drivers)

ROKU-C-16 (Interface Board):

• Footprint (4.8 x 2.8 inches)
• Utilizes the 5V TTL Serial Port (.9 meter cable included).
• 16 Output Drivers for Lamps or Relays (.3 ampere each driver)
• Terminal blocks for all I/O connections
• Diagnostic Mode and Modes of operation selectable on board
• Requires 12V External Power Supply)..
• On board LED's to indicate Roku Power and Processor running.
• 5VTTL Serial Setup: 38400 baud, N,8,1
• Can plug directly into the BrightSign (no extension cable required)
• 3.3 Volts available on 'Input Terminal Strip' for PIR connections.

Description of Operation:

This board is used to interface to a BrightSign 'Compact'.  The first 8 inputs or buttons (inputs 0-7) pass directly to the BrightSign GPIO connections (Btn0-Btn7).  The BrightSign uses the 5V TTL serial port to receive the inputs 8-15 (Port1 serial event)  for the 'C-16 board'.  The BrightSign controls the 16 Outputs via the 5V TTL Serial Port (Port1).

Rev 3 Firmware Option2 = OFF:  BrightAuthor is expecting strings to represent the serial 'inputs'.  The new default format is to send the ascii value for the 'input number'' followed by a carriage return (<CR>). Inputs 8-15 are transmitted to the Brightsign whenever the inputs are detected low.  Only the first input 'low' is reported as an I/O event (similar to the GPIO events).  So, if input 8 and input 9 are both low only input 8 (Serial Event '8') will be sent.  This is '8',<CR> (two bytes).  If input10 goes low  after input 11 goes low, only input 10 will be reported as an event.

• Input#    Bytes to BrightSign     TTL/Serial Event    BrightAuthor    Option2=On
• 8            "8",<CR>                     "8"                          8                        1
• 9            "9",<CR>                     "9"                          9                        2
• 10          "10",<CR>                   "10"                        10                      4
• 11          "11",<CR>                   "11"                        11                      8
• 12          "12", <CR>                  "12"                        12                     16
• 13          "13",<CR>                   "13"                        13                     32
• 14          "14",<CR>                   "14"                        14                     64
• 15          "15", <CR>                  "15"                        15                     128

Note: BrightAuthor 'EOL' (end of line character) should be set to 13 (carriage return). This should be the default.

Rev 3 Firmware Option2 = On (send binary data byte)

• Input#    Data Byte         Binary
• 8                  1               00000001
• 9                  2               00000010
• 10                4               00000100
• 11                8               00001000
• 12              16               00010000
• 13              32               00100000
• 14              64               01000000
• 15             128              10000000
  NOTE: Any combination of inputs will be reported.  I.E. If inputs 8 and 9 are both low, then 3 (binary 00000011) will be reported to the BrightSign)

Serial Transmission Protocol:  The BrightSign has to allow 10 milliseconds to elapse between serial data 'bursts' out.  This 10 millisecond 'rest' time is interpreted by the HMS board as a 'break' in serial transmission.  This 'break' condition synchronizes the HMS board to the serial transmissions from the BrightSign.

Outputs 0-7 and 8-15:  The first two bytes going out the BrightSign 5V TTL serial port are the data bytes for Port1 and Port2 of the HMS board.  Port1 is Outputs 0-7 and Port2 is Outputs 8-15.  If TTLSend(1;128) is sent, then bit 1 of port 1 will turn on (Output0) and bit 7 of Port 2 will turn on (Output15).  All other outputs will turn off because their respective bits are low.

Link: Setting up the Serial Port and Sending Bytes with 'BrightAuthor'.

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Options: (Rev 3 Firmware)

• Option1   N/A 
• Option2   Send Binary Data (not BrightAuthor string), Any combination if inputs
• Option3   Reflect Inputs (8-15) to Outputs 0-7 and 8-15 (Diagnostic stops monitoring the inputs)
• Option4   Polling Required to get input data.  The input data (Inputs 8-15) is sent after receiving a byte from the BrightSign.
• Option5   Don't send $AA (170 decimal) if Option6 diagnostic.

• Diagnostics: Option 6 Selects a 'multiple diagnostic' feature.  With Switch 1, slider 6 (SW1-6) on, the board is in a diagnostic mode.  The two 8 bit ports are cycled one bit at a time on (changes every second).  The 5V TTL driver sends decimal 170 (0xAA) to the BrightSign if not Option5.  This diagnostic allows for a visual on all output drivers, verified connection and baud settings to the BrightSign 5VTTL serial port.

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Here is a table of 'bit' control and the decimal values to control that bit.

• Bit     Binary              Decimal
• 0       00000001b      1d
• 1       00000010b      2d
• 2       00000100b      4d
• 3       00001000b      8d
• 4       00010000b      16d
• 5       00100000b      32d
• 6       01000000b      64d
• 7       10000000b      128d

Just add the decimal numbers together to get the bits set that you want.  Setting all bits on is 255d (decimal).  Setting bits 0 and 7 on is 128+1 or 129 decimal

Updated: January 04, 2012