16 input RS232 (Serial Interface Board)
The TX/RX pins can be reversed with simple on board jumper (normal or reverse TX/RX pins). This feature supports either style of RS232 cable (null modem cable or standard RS232 cable). The standard RS232 cable has pins 2 and 3 swapped (pin2 of one end connects to pin 3 of the other end).
Operation: (Firmware 3.2) When an input is grounded (set low), a string is sent out that represents the input (BrightAuthor compatible). If multiple inputs are activated, successive inputs are reported. I.E. If input 1 is closed, the "1" is reported. Then if input 9 closes also, then the new input "9" is reported. When all inputs go high, then a zero is reported (switches have all been released).
The strings are:
Contact HMS Electronics if you have need of other than 'strings' to be sent in response to inputs.
Important: IF using the external 5V power, remove the large red jumper wire.
J4 Connector is utilized as a 3.5mm stereo 'RS232' connectors as is found commonly on products. The same TX/RX pin swap is utilized.
Note: IF ordering this board and you need the 3.5mm stereo connector, email us to specify that you need the 3.5mm and not the DB9 connector.
RS232_Slides.BRS (BrightScript File)
This script written for this 16 input board in 'ascii' mode. It will play a slide to match the input number (slides 1 through 16).
Un-Zip this file to the Root Directory of your SD card and rename the file RS232_Slides.BRS to autorun.brs. All of the slides should be in the 'Slides' sub-directory.