17
Configuring the Mini-Matrix for Operation
4.3 Adding Switches
As stated in section 4.2, the switches are controlled by GPIO pins, so it is
important to add switches to the correct connectors on the PCB (Printed Circuit
Board).
Switches must be added to the next available connector that does
not share GPIO pins with another switch.
The SP6T switch connectors share
GPIO pins with some of the SPDT switch connectors. The table below shows
what connections are allowed or not, depending on the switches already
connected to the board.
Note: Switches must be connected in ascending order according to the
table below. After adding a switch the user will have to contact Dow-Key
in order to properly configure the Mini-Matrix on the HTTP page.
Example: If there is one SP6T switch connected to SW1, the next allowed
connector for an SPDT would be SW5.
SP6T Connection
Unallowed SPDT
Connection
Allowed SPDT
Connection
N/A
N/A
SW1
– SW8
SW1
SW1, SW2, SW3, SW4
SW5, SW6, SW7, SW8
SW2
SW4, SW5, SW6, SW7
SW1, SW2, SW3, SW8
SW1, SW2
SW1
– SW7
SW8
Figure 4.3-1 shows the different switch connections on the internal PCB