NeoKey I2C Address

One of the NeoKeys will need an I2C address.

Bridge the A0 pads on the NeoKey PCB using a blob of solder.

Daisy Chain NeoKeys

Use a short STEMMA QT cable to connect the two NeoKey PCBs together.

Connect a longer STEMMA QT cable to the NeoKey with the A0 I2C address.

NeoPixel Stick

Use the ribbon cable to create a 3-pin wire that is 8 inches / 20.3 cm in length.

Solder NeoPixel Stick Wires

Connect the three wires to the GND, DIN and 5VDC pads on the NeoPixel stick. 

Rotary Encoder I2C Addresses

Two of the three rotary encoders will need to be assigned special I2C addresses by bridging the jumpers with a blob of solder.

• 1st Rotary Encoder no I2C Address
• 2nd Rotary Encoder A1 I2C Address
• 3rd Rotary Encoder A0 I2C Address

On/Off Button 

Use the 2-pin JST PH and 2-pin PicoBlade socket cables and a short (1inch long) wire.

Soldering Ground Wire

Connect the short wire and black wire from the 2-pin PicoBlade socket cable to the cathode (– LED) terminal.

Soldering Common

Connect the short wire and black wire from the 2-pin JST PH socket cable to the common (C1) terminal.

Soldering LED Wire

Connect the red wire from the 2-pin PicoBlade socket cable to the anode (+ LED) terminal.

Soldering NC Pin

Connect the red wire from the 2-pin JST PH socket cable to the normal closed (NC1) terminal.

JST Cables for Feather

Use the 2-pin JST PH and 2-pin PicoBlade plug cables on the Feather.

Solder Ground

Connect the two black wires to the ground pin.

Solder 3V Pin on Feather

Connect the red wire from the PicoBlade cable to the 3V pin.

Solder EN Pin on Feather

Connect the red wire from the JST PH cable to the EN pin.

Connect On/Off Button to Feather

Plug in the corresponding cables together.

Solder JST plug to Battery Holder

Cut the stock 2.1mm barrel jack from the 3x AA battery holder.

Solder the 2-pin JST female cable to the power cable. 

Ensure the polarity of the wires are correct.

Testing On/Off Button with Feather

Install AA batteries into the battery holder.

Plug the battery holder into the Feather.

Use the On/Off Button to power the Feather to test the circuit.

Wires for SPST Switch

Use the ribbon cable to create two wires.

• Short Wire 2.5in / 6.35 cm long
• Longer Wire 8in / 20.3 cm long

Solder Wires

Attach the short wire to one of the terminals (not the middle).

Attach the longer wire to the middle terminal.

Wires for DPDT Switch

Use ribbon cable to create two sets of 2-pin wires that are 8 inches / 20.3 cm in length.

Soldering wires to DPDT Switch

Attach the first 2-pin cable to one of the terminals that isn't the middle.

Attach the second 2-pin cable to the middle terminal.

Connect DPDT Switch to TRRS

The wires from the DPDT switch will be soldered to the pins on the TRRS breakout.

Solder Wires to TRRS

Attach one wire from the 2-pin cable to the Left labeled pin.

Attach one wire from the other 2-pin cable to the Ring labeled pin.

Solder Wires to Micro Switches

Use the ribbon cable to great four wires.

• 2x Long Wires 6.5 inches / 16.5 cm
• 2x Short Wires 2.5 inches / 6.35 cm

Use the short wires to share the COM and NO connections across the two switches.

Connect the longer wires to the switches COM and NO terminals.

Reference the photo for correct wiring.