Davis Vantague Vue, Arduino and a RaspBerry PI 3

Home automation has become more popular and weather monitoring definitely falls into that category. One of the best things you can buy is a Davis (whatever version). There is a BUT though. In order to log data, you need to buy their special data-logger that will set you back some $300 or so. Or do you?

Davis Vantage Vue

This davis instrument is a all-in-one bundle. Wind direction and speed sensors, temperature and humidity sensor (nicely shielded), and a rain bucket sensor. Mind you, these are nicely set up instruments in a ready made package. In addition, you’ll get all this powered by solar power during the day, a supercapacitor charged from solar, powers it throughout the majority of the night and is backed up by a battery, should it not suffice.

All this ties to a nicely designed (straight from the early ’90s) home console, which displays all the nifty-shifty graphs and tells you various things. The console adds a couple more sensors, namely a temperature and humidity reading of the inside, as well as atmospheric pressure sensor. All this is well worth the money, go for it. It is mostly around $400-$500 (12.000 CZK 🙂 )

Software sucks, full-stop.

If you want to log data to a database, or just print them on paper and circle them with a red pen later on, don’t expect to connect to the home console via a USB, or other, reasonable interface. There has been one obscure interface in the past, but Davis “upgraded” the firmware and this is no longer available (well, it is, but ).

To recap, what you get from a Davis Vantage Vue (An impressive set, I must say):

  • Temperature
  • Humidity
  • Wind direction
  • Wind velociity (including wind gusts)
  • Rain rate, total rainfall
  • Solar irradiation
  • Capacitance battery backup

Counting the options

 

The components

What will you need you ask? These:

  • CC1101 module
  • Arduino Mini Pro @ 3.3V
  • FTDI usb stick to program the arduino
  • Regulated power source (3.3V)
  • ESP-01s (8266 wireless chip)

 

Wiring together

CC1101 pinout:

The module came in without anything soldered onto it. Given the size, it eill require some steady hands a fine soldering tip.

 

From left to right, the connections to arduino are:

CC1101    |  Arduino
-------------------
1 – Vcc   |  3.3V
2 – GND   |  GND
3 – MISO  |  PIN11
4 – SCLK  |  PIN13
5 – MOSI  |  PIN12
6 – GDO2  |  PIN03
7 – GDO0  |  PIN02
8 – SCN   |  PIN10

When wired together, on a breadboard, the whole setup looks like this. Neat.

 

Software

All these need to be present in one directory / imported as libraries and then included in the main davis.ino program.

CC1101.h

Davis.h

Davis.cpp

davis.ino:

#include <SoftwareSerial.h>

/*
 Davis.ino for the RFBee.
  Prints out the received data packets from the Davis Instruments Vantage Vue ISS.
  rdsman
 
*/
#include "Davis.h"
#include "SPI.h"
//
byte temp;
SoftwareSerial esp(8, 9);// RX, TX
String ssid ="abc";
String password="def";
String data;
String server = "abc.us"; // www.example.com
String uri = "/insert.php";
 
//
// The standard Arduino setup.
//
void setup()
{ 
 delay(100);
 Serial.begin(9600);
 delay(100); 
 Radio.begin();
 Radio.rx();

//esp.begin(115200);

Serial.println("Done Setup");
}
//
// The standard Arduino loop.
//
void loop()
{
 if (Radio.available() > 0)
 printPacket();
 if (hopping)
 {
 hopping = 0;
 Radio.hop();
 Radio.rx(); // Un-comment if not using Timer 2.
 } 
} 
//
// Print the received packet.
//
void printPacket(void)
{
 byte header = Radio.read(); // Where's the header?
 byte package[16];
 
 package[0] = hopIndex; // Which frequency are we at?
 package[1] = header;
 for (int i = 2; i < 11; i++) // The received packet.
 {
 package[i] = Radio.read();
 }
 package[11] = pktRssi;
 package[12] = pktLqi;
 package[13] = freqError;
 package[14] = next;
 package[15] = pktCount;
 String data = "{hop:" + String(package[0]) + "," + 
 "'header':" + String(package[1]) + "," +
 "'byte0':" + String(package[2]) + "," + 
 "'byte1':" + String(package[3]) + "," + 
 "'byte2':" + String(package[4]) + "," + 
 "'byte3':" + String(package[5]) + "," + 
 "'byte4':" + String(package[6]) + "," + 
 "'byte5':" + String(package[7]) + "," + 
 "'byte6':" + String(package[8]) + "," + 
 "'byte7':" + String(package[9]) + "," + 
 "'byte8':" + String(package[10]) + "," + 
 "'byte9':" + String(package[11]) + "," + 
 "'rssi':" + String(package[12]) + "," + 
 "'lqi':" + String(package[13]) + "," + 
 "'next':" + String(package[14]) + "," + 
 "'count':" + String(package[15]) + "}";
 Serial.print(data);
 Serial.println();
 hopping = 1; // Turn on hopping.
}

 

Results

So far, this is in the serial console.

Done Setup
{hop:0,'header':128,'byte0':4,'byte1':171,'byte2':23,'byte3':91,'byte4':0,'byte5':189,'byte6':249,'byte7':255,'byte8':255,'byte9':184,'rssi':93,'lqi':7,'next':64,'count':1}
{hop:1,'header':48,'byte0':3,'byte1':174,'byte2':250,'byte3':65,'byte4':135,'byte5':114,'byte6':115,'byte7':255,'byte8':255,'byte9':183,'rssi':92,'lqi':7,'next':64,'count':2}
{hop:2,'header':224,'byte0':2,'byte1':174,'byte2':11,'byte3':1,'byte4':9,'byte5':213,'byte6':126,'byte7':255,'byte8':255,'byte9':184,'rssi':102,'lqi':7,'next':64,'count':3}
{hop:3,'header':80,'byte0':1,'byte1':185,'byte2':255,'byte3':115,'byte4':14,'byte5':171,'byte6':196,'byte7':255,'byte8':255,'byte9':184,'rssi':99,'lqi':7,'next':64,'count':4}
{hop:4,'header':128,'byte0':2,'byte1':203,'byte2':23,'byte3':75,'byte4':5,'byte5':122,'byte6':120,'byte7':255,'byte8':255,'byte9':183,'rssi':96,'lqi':7,'next':64,'count':5}
{hop:0,'header':144,'byte0':2,'byte1':194,'byte2':6,'byte3':81,'byte4':156,'byte5':25,'byte6':240,'byte7':255,'byte8':255,'byte9':183,'rssi':45,'lqi':1,'next':64,'count':6}
{hop:1,'header':224,'byte0':2,'byte1':186,'byte2':11,'byte3':3,'byte4':2,'byte5':211,'byte6':33,'byte7':255,'byte8':255,'byte9':184,'rssi':46,'lqi':1,'next':64,'count':7}
{hop:2,'header':80,'byte0':2,'byte1':189,'byte2':255,'byte3':115,'byte4':8,'byte5':239,'byte6':33,'byte7':255,'byte8':255,'byte9':184,'rssi':44,'lqi':1,'next':64,'count':8}
{hop:3,'header':128,'byte0':2,'byte1':200,'byte2':23,'byte3':91,'byte4':15,'byte5':67,'byte6':157,'byte7':255,'byte8':255,'byte9':183,'rssi':46,'lqi':1,'next':64,'count':9}
{hop:4,'header':160,'byte0':3,'byte1':198,'byte2':254,'byte3':41,'byte4':3,'byte5':239,'byte6':137,'byte7':255,'byte8':255,'byte9':184,'rssi':45,'lqi':1,'next':64,'count':10}

And the contents were a bit worked out and the more polished, but still a development version is at www.spoton.cz/weather

<This blog post being constantly updated>

<Web portion in a separate post>

 

 

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