Follow the circuit diagram and reference the wired connections. Use 10-wire silicone cover ribbon cable to make bundled connections.
The parts all share common ground that is wired into the OLED breakout. Wire lengths are moderately sized to allow top and bottom panels to move around. The OLED display uses a STEMMA QT cable for easily plugging into the breakout.
Wiring FeatherWing Doubler
Voltage and ground connections from the OLED breakout are wired into the 3V and GND pins on the FeatherWing Doubler. The signal connections for the potentiometers and button are wired into the accompanying pins on the FeatherWing Doubler.