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Mirror of https://github.com/pimoroni/enviro This is the Pimoroni Enviro firmware for their PicoW based sensors
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Philip Howard 2c62557054
Merge pull request #220 from pimoroni/patch-csv 		9 months ago
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README.md

Enviro MicroPython firmware

About Enviro

Our Enviro range of boards offer a wide array of environmental sensing and data logging functionality. They are designed to be setup in location for months at a time and take regular measurements.

On top of their individual features the boards all share a common set of functions:

  • on-board Pico W with RP2040 MCU and WiFi functionality
  • accurate real-time clock (RTC) to maintain the time between boots
  • a collection of wake event triggers (user button, RTC, external trigger)
  • battery power input suitable for 1.8-5.5V input (ideal for 2x or 3x alkaline/NiMH cells or a single cell LiPo)
  • reset button for frictionless debugging
  • user button to trigger wake events or enter provisioning mode
  • activity and warn LEDs to show current status
  • Qw/ST connector to allow you to customise your sensor suite

These common features mean that the modules can run off very little power for long periods of time. During sleep (when the RTC remains active) the boards only consume a few microamps of power meaning they can last for months on a small battery pack. The modules wake up at regular intervals (or on a fixed schedule) to take a reading, store it, and go back to sleep.

As well as logging data locally Enviro boards can also use the Pico W's wireless functionality to upload the data they capture to a supported endpoint. Wireless communications take a lot of power so this should be done as infrequently as possible.

Powering Enviro boards

Enviro boards are designed to run for months on a set of batteries so that you can install them wherever they can gather the best data - perhaps on that high shelf in the corner of the kitchen that you can't quite reach, under a Stevenson screen in the back garden, or tucked in the shed.

You can use 3xAA or 3xAAA (either alkaline or NiMH), a single cell LiPo battery, or a USB cable to power Enviro boards.

Supported products

Supported endpoints

Documentation