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# ESP8266 WeatherStation
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Compact outdoor weather station.
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Features:
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* Temperature
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* Humidity
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* Pressure
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* dust particles PM10 (10µm) and PM2.5 (ultrafine, 2.5µm)
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* radioactivity
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* WiFi
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* needs 5V power supply
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* opensensemap.org API
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Power consumption:
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* ~50mA @ 5V
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* (31mA idle + fan + wifi)
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CAD files (OpenSCAD) and source code included.
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| geiger counter and DHT22 | particle sensor and ESP8266 |
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## Installation Instructions
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1. git clone https://dev.xd0.de/hendrik/esp-weatherstation.git
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2. cd esp-weatherstation
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3. virtualenv -p python --no-site-packages .
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4. source bin/activate
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5. pip install -U platformio
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6. platformio run --target upload && platformio device monitor -b 115200
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## Wiring
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NodeMCU v0.9
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SDS011
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A0 D0
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RSV (5)D1 ----------------------- TXD
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RSV (4)D2 ----------------------- RXD
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RSV (0)D3 -- BMP_SDA .---- GND
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RSV (2)D4 -- BMP_SCL | ...
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RSV 3V3 -- BMP_VCC | .--- 5V
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RSV .-GND -- BMP_GND | | ...
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GND =C= D5 | | ...
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3V3 '- D6 ------------. | |
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GND D7 -- DHT_DATA \ +-| --------- GND
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3V3 D8 \ | +---------- 5V
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EN RX '- | ----------- VIN
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RST TX | |
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GND -. GND - DHT_GND | | GeigerCnt
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.-- 5V | 3V3 - DHT_VDD | |
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| '------------------------' |
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'-----------------------------------'
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SDS011:
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- TXD -> D1
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- RXD -> D2
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- GND -> GND
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-
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- 5V -> 5V
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-
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-
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DHT22:
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- VDD -> 3V3
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- DATA -> D7
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- ->
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- GND -> GND
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RadiationD-v1.1(CAJOE):
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- GND -> GND
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- 5V -> 5V
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- VIN -> D6
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12V power mod with step down converter and voltage divider for voltage measurement:
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BAT+ --+--------------.
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\R\ |
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\1\ '
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>---+--------------------------------- A0
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/R/ | . ________________
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/2/ === C1 +---| buck converter |---- 5V
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BAT- --'------+-----------|________________|---- GND
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Example values: R1=1MΩ, R2=100kΩ, C1=some ceramic capacitor (optional)
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measures up to ~30V
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## ToDo
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* https://tinker.yeoman.com.au/2016/05/29/running-nodemcu-on-a-battery-esp8266-low-power-consumption-revisited/
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* deep_sleep (connect D0 to RST)
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* https://hackaday.com/2014/10/25/use-a-cheap-pin-diode-as-a-geiger-counter/ (opengeiger.de/elektronik.html)
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* Solar power
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## License
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### Code
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WTFPL: http://www.wtfpl.net/about/
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### Sensor Data
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Public Domain: https://opendatacommons.org/licenses/pddl/summary/
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