The Smart Home Kit for Digi-Key IoT Studio - Feather ESP32 kit has been discontinued by Adafruit. If you make your own similar project, you will have to buy the parts separately.

BME680 Wiring

You'll be soldering and wiring the BME680 directly on the prototyping grid on the bottom right side of the Quad 2x2 FeatherWing.

Make the following connections between the FeatherWing's prototyping grid and the BME680:

  • FeatherWing 3V to sensor VIN
  • FeatherWing GND to sensor GND
  • FeatherWing SCL to sensor SCK
  • FeatherWing SDA to sensor SDI

Adding a Buzzer to the Quad FeatherWing

There's another prototyping grid on the bottom left of the Quad 2x2 FeatherWing. You will be adding the buzzer to this grid.

Place the buzzer on the prototyping grid. Make sure the buzzer's negative (short) lead is placed on the ground rail. Also, ensure the stacking headers will be able to fit besides the buzzer.

Solder the buzzer's negative (short) lead to the ground rail.

Solder a wire between GPIO Pin 12 and the positive (long) lead from the buzzer. 

Mini Relay FeatherWing Wiring

Solder the 3-Pin terminal block to the the Non-Latching Mini Relay FeatherWing.

Solder a wire between the Signal pin and header pin 33.

Then, solder a red wire to the 3V header on the Non-Latching Mini Relay FeatherWing. Connect this wire to the NC pin on the 3-pin terminal.

Attaching Female JST Connectors to Quad FeatherWing

You'll use female JST connectors to connect the IoT Hub's base to the fan, LEDs, and door sensor.  

Start by cutting a JST-PH cable in two. Make sure there's an even length of cable between both connectors.

Then, strip off 5mm from the red and black cables. 

You may want to tin ends of the cables with a bit of solder at this point.

On the top left side of the Quad FeatherWing, make the following connections between the JST-PH connector and the header pins on the FeatherWing:

  • JST-PH Red to FeatherWing GPIO 15
  • JST-PH Black to FeatherWing GND

Just like before, cut and strip another JST-PH connector.

On the top right side of the Quad FeatherWing, make the following connections between the JST-PH connector and the header pins on the FeatherWing:

  • JST-PH Red to FeatherWing GPIO 12
  • JST-PH Black to FeatherWing GND

Solder all four sets of Feather headers to the Quad FeatherWing.

Before placing the Feather Huzzah32 and FeatherWings on the Quad FeatherWing, make sure that all the female JST connectors are routed through the middle and out the top of the Quad FeatherWing.

You may want to use tape to secure the cables to the FeatherWing's PCB.

Then, connect both FeatherWings and the Feather Huzzah32 to the Quad FeatherWing.

You've successfully built the IoT Home's Hub! Let's move on to building the rest of the IoT Home.

This guide was first published on Dec 11, 2019. It was last updated on Dec 11, 2019.

This page (Wiring) was last updated on Oct 21, 2020.