Data Sheet

10
AD-ON CARDS
LED-CARD
The LED card plugs into the Raspberry Pi expansion connector. Its main function is to show in top-view
the status of the relays, but it can be used as a general purpose, 32 LED card to show the status of any
input or output.
Any LED can be turned on or off using the command “relay8 led [1-32] on/off”.
The LED card can show the status of relays from up to four 8-Relay cards. If more than four cards are
used, the LED card cannot be used since the I2C address will conflict with the relays.