I incorporated your USB-RLY08 board into a design, then recently built a second version, using the Rev B version. The 2 boards don’t seem to be compatable. The Rev B board is not fucntion properly. Suggestions??
If the board is not detected properly by the computer, it’s because it uses a different driver. More information, including a link to the driver can be found here:
robot-electronics.co.uk/htm/ … 8btech.htm
If this does not resolve your issue, can you provide more details as to what is happening?