airy

Air Quality Monitor (PM 1, 2.5, 10)

Installation

You'll need to install probe-run by using:

cargo install \
    --git https://github.com/knurling-rs/probe-run \
    --branch main \
    --features defmt

And then simply proceed to run

cargo run

While having your ST-Link v2 connected to your STM32F4xx board.

Hardware

This application expects a few hardware components:

• 1 OLED screen with SSD1306 controller on I2C
• 1 HM3301 air quality sensor on I2C
• 1 STM32F4xx board

The display and air quality sensor should share the same bus, I'm using pin 8 and 9 for I2C.

The total cost of the setup should be somewhere around $40.