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Figure 5: Wiring Common Anode Signals
Figure 6: Wiring Common Cathode Signals
The outputs of the MRB-IIAB are 5V logic-level signals. To prevent permanent damage to the
signal LEDs, be sure to include appropriate current limiting resistors. 330Ω resistors are
typically safe, but other values can be used to adjust and balance the brightness of each color.
Leave any unused signal outputs disconnected. Connecting any signal output directly to 5V,
GND, or any other power source may damage the MRB-IIAB module.
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