Mount the buttons into the front of the case.

Solder each of the button LED GNDs and GND pins together with short pieces of wire. The LED GND pins are marked with a minus sign (-).

Solder the buttons' GND connections together.

• Connect the blue button's LED to the QT Py's pin A0 (blue wire).
• Connect the blue button's input to the QT Py's pin A1 (white wire).
• Connect the green button's LED to the QT Py's pin A2 (green wire).
• Connect the green button's input to the QT Py's pin A3 (yellow wire).
• Connect the buttons' GND signal to the QT Py's GND pin (black wire).

Insert the strain gauge's wires into the NAU7802's four terminal block connections:

• Green wire to A+
• White wire to A-
• Black wire to E-
• Red wire to E+

Connect the two alphanumeric display boards together with a STEMMA QT cable. Plug the displays into the NAU7802 with a STEMMA QT cable.

Plug the NAU7802 into the QT Py with a STEMMA QT cable. This completes all of the connections between the components.