The diagram below provides a visual reference for wiring of the components. This diagram was created using the software package Fritzing.

Adafruit Library for Fritzing

Use Adafruit's Fritzing parts library to create circuit diagrams for your projects. Download the library or just grab individual parts. Get the library and parts from GitHub - Adafruit Fritzing Parts.

Wired Connections

The ItsyBitsy nRF52840 is powered by 500mAh battery via the Lipo Backpack. This allows the USB port from the ItsyBitsy nRF52840 to charge the 500mAh battery. A slide switch is connected to the two switch pin on the Lipo Backpack. 

  • BAT from Lipo Backpack to BAT on ItsyBitsy nRF52840
  • Ground from Lipo Backpack to GND on ItsyBitsy nRF52840
  • 5V from Lipo Backpack to USB on ItsyBitsy nRF52840

Slide Switch

A 2-pin slide switch is wired to the switch pins on the Trinket/ItsyBitsy Lipo Backpack. 

NeoPixel Strip

The neopixel strip is connected to the ItsyBitsy with three wired connections, data, voltage and ground.

  • 5V+ from NeoPixel Ring to Vhi on ItsyBitsy nRF52840
  • G from NeoPixel Ring to G on ItsyBitsy nRF52840
  • DIN from NeoPixel Ring to Pin #5 on ItsyBitsy nRF52840

This guide was first published on Jan 21, 2020. It was last updated on Jun 12, 2024.

This page (Wiring Diagram) was last updated on Mar 08, 2024.

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