59 lines
2.3 KiB
Markdown
59 lines
2.3 KiB
Markdown
#FreeDavis project
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This project aims to provide a user-installable, idiot-proof and reliable way
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of accessing data provided by the instruments made by a company called Davis.
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The outdoor units are pretty accurate and reliable units, but to be honest,
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the inability to access / dump / mine / connect to the data directly, is a limiting
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factor.
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##Desired functionality
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As the name suggests, the whole thing should be an open system, based on open software.
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From the things that the system should be capable of:
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1. receiving the data from outdoor sensors (obviously)
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2. Logging and storing the data
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3. Display / analysis / plotting
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4. Possibly sending of data
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##Data receiver
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Data receiver part is accomplished by a CC1101 wireless chip connected to an
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Arduino mini, both working on 3.3V. Dtat is being sent via serial Rx Tx pins of
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the arduino.
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##Data logger
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Current working solution incorporates an additional connection of a RaspberryPi
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that loggs data sent by the Arduino via serial interface.
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- data extraction written in python
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- data feeder written in python (influxDB connector)
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- data logging and storing is accomplished via InfluxDB (subject to change?)
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- data serving python app based on cherrypy
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- UI based on bootstrap3
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- graphing by Dygraphs.js
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## Hardware used:
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Arduino mini pro 3.3V
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RaspberryPi (any version basically)
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some wiring together (todo: picture of wiring in svg)
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(Pins counted from left on CC1101)
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CC1101 | Arduino mini Pro 3.3V
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-----------------------------------
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1 – Vcc | 3.3V
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2 – GND | GND
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3 – MISO | PIN11
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4 – SCLK | PIN13
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5 – MOSI | PIN12
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6 – GDO2 | PIN03
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7 – GDO0 | PIN02
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8 – SCN | PIN10
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Arduino Mini Pro 3.3V | RaspberryPi
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-------------------------------------
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Vcc | 01 - 3.3V
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GND | 06 - GND
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3 - Tx | 10 - S0 Rx
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2 - Rx | 08 - S0 Tx
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