Homie Room Sensor

located in IKEAs Vindriktning

after this upgrade it will measure:

air quality
temperatur
pressure
altitude

The system can be powered by USB-C or Micro-USB, attached at ESP8266 board.

Filesystem

Configuration

Use the config-example.json from the host folder and create here a config.json file.

HowTo upload

Start Platform.io Open a new Atom-Terminal and generate the filesystem with the following command : pio run -t buildfs Upload this new generated filesystem with: pio run -t uploadfs

Command pio

Can be found at ~/.platformio/penv/bin/pio

Hardware

ESP8266 version ESP12 was used.

The prototype was based on the Witty board

REST         |       TXD
ADC    LDR   |       RXD
CH_PD        |       GPIO05
GPIO16       | BTN   GPIO04
GPIO14       |       GPIO00
GPIO12 RGB-G |       GPIO02
GPIO13 RGB-B | RGB-R GPIO15
VCC          |       GND
            USB

The following pins are used:

GPIO4 PM1006 particle sensor
GPIO2 WS2812 stripe out of three LEDs, replacing the orignal LEDs at front
GPIO15 Red LED (optional)
GPIO12 Green LED (optional)
GPIO13 Blue LED (optional)
GPIO14 I2C clock
GPIO5 I2C data pin

Bill of materials

IKEA Vindriktning
ESP8266 (e.g. Witty board)
BMP280 sensor
some wire

Sources

[https://github.com/amkuipers/witty Witty pinout]

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