The piezo connects to FLORA GND and FLORA TX (digital pin 1). It does not matter which leg goes to which pin (not polar).

The UV index sensor connects as follows:
  • FLORA 3.3v -> sensor 3V
  • FLORA SDA -> sensor SDA
  • FLORA SCL -> sensor SCL
  • FLORA GND -> sensor gnd
You can use any battery pack 3-9V, though we recommend a 500mAh rechargeable lipoly battery for a good balance of long battery life and portability.

This guide was first published on Jul 23, 2014. It was last updated on Jul 23, 2014.

This page (Circuit Diagram) was last updated on Mar 18, 2021.

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