Q1: I changed the configuration file to a new trigger mode. The default trigger mode is still used, instead of the new trigger mode.
A1: Make sure your computer is not set to hide the file extensions. Your file is incorrectly named "read.cfg.txt" instead of "read.cfg". Uncheck "hide extensions for known file types" under "folder options" and rename your config file to "read.cfg"
Q2: When I apply power to the module, WITH the microSD card already inserted, the configuration file (read.cfg) stored in onboard flash memory is used, instead of the read.cfg file on the microSD card.
A2: Take the onboard read.cfg file offline by renaming it to a different name. Now the read.cfg file on the microSD card takes precedence and sets the correct mode. If it still doesn't work, put your read.cfg file on the onboard flash memory instead of the microSD card.
Q3: Can you add multiple sound files on each of the buttons, i.e. can each button cycle through multiple sound files.
A3: This module only supports one sound file per button. You can load 4 sound files in total, and depending on which of the 4 buttons are pressed, the specific sound file for that button will be played back. If you need multiple sounds per button see the FN-BC20 or FN-BC10. Also the USB5M supports more than one sound file per button.
Q4: How do I adjust the volume of the board?
Q5: I don't have a 10W speaker on hand, so can I use a smaller speaker like 3W or 5W instead?