Connecting the electronics

Let's attach all the electronics to the expansion plate. The following steps will guide you how to attach and wire them:

1. Using four aluminum standoffs, attach the FeatherWing Doubler - Prototyping Add-on to the base plate (Figure 8.4):

Figure 8.4: Adafruit FeatherWing Doubler - prototyping add-on. Image courtesy of Adafruit Industries (https://www.adafruit.com)

2. Place the Adafruit Feather HUZZAH ESP8266 on the FeatherWing Doubler, as shown in the following figure (Figure 8.5):

Figure 8.5: Placing the Adafruit Feather HUZZAH ESP8266 on the FeatherWing Doubler

3. Take the Adafruit Stepper and DC Motor FeatherWing and a stick of extra-long male header, and break off five pieces, carefully pulling (or cutting) out the middle one.
4. Insert it into M3 and M4. This will make it easy to connect and disconnect the DC motors (Figure 8.6):

Figure 8.6: Adafruit Stepper and DC Motor FeatherWing pre-paired with extra long male headers. Image courtesy of Adafruit Industries (https://www.adafruit...