wiki.volkszaehler.org

Postfossil BV from the Netherlands:

• http://www.postfossil.nl/

offers a meter reading device at:

• http://www.youless.net/home.html

In germany the device is available via:

• http://www.bg-etech.de/

and can be ordered via Amazon at

• http://www.amazon.de/dp/B00EMBM920

although the device is offered much cheaper via the vendor in the netherlands. The device has a lan interface and can be used with analog ferraris meters as well as digital S0 input.

an english manual can be found at:

• http://www.bg-etech.de/images/YouLess/Youless-manual-1.3C_EN.pdf

This is a screen shot of the web interface offered:

I (Wolfgang - wf (at) bitplan.com) am currently trying it out and intending to connect it to the volkszaehler solution. I'll post any news here.

• http://wiki.td-er.nl/index.php?title=YouLess

has information on how to access the device

The following code is a first attempt to read data from the youless logger and post it to the volkszaehler middlware. You might want to modify:

• $url - the url to read the youless from
• $vzurl - the url your middleware runs at
• $cuuid - the channel id to post to
• $delay - how long to wait between posts default: 5 secs / 12 readings per minute

currently only the power reading is posted. Just add another call to also post the meter reading (to a different channel).

To use code copy it to a file „yl.php“ and then start with

php -f yl.php 

the output should look like:

2014-05-28 21:05:07   1,518 kWh 1304 Watt
2014-05-28 21:05:12   1,520 kWh 1338 Watt
2014-05-28 21:05:17   1,522 kWh 1318 Watt

For any feedback please contact me at wf (at) bitplan.com. Enjoy …

<?php
  /**
   * $Header: /Users/wf/youless/RCS/yl.php,v 1.4 2014/05/28 18:58:31 wf Exp wf $
   */
 
  /**
   * get a curl channel
   */
  function curl($url) {
    //  Initiate curl
    $ch = curl_init();
    // Disable SSL verification
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    // Will return the response, if false it print the response
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    // Set the url
    curl_setopt($ch, CURLOPT_URL,$url);
 
    return $ch;
  }
 
  /**
   * read the given url
   * @param $url:the url to read from
   */
  function readUrl($url)  {
    $ch=curl($url);
 
    // Execute
    $result=curl_exec($ch);
    return $result;
  }
 
  /**
   * post to the given url
   */
  function postUrl($url,$fields) {
     $ch=curl($url);
     $fields_string="";
     //url-ify the data for the POST
    foreach($fields as $key=>$value) { 
      $fields_string .= $key.'='.$value.'&'; 
    }
    rtrim($fields_string, '&');
     curl_setopt($ch,CURLOPT_POST, count($fields));
    curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);  
     $result=curl_exec($ch);
    return $result;
   }
 
   /**
    * read the meter
    */
   function readyouless($url) {
    $json=readUrl($url);
 
    // get the meter reading
    $meter=json_decode($json, true);
    // Will dump a beauty json :3
    // comment out next line if you'd like to debug the json message
    // var_dump($meter);
    return $meter;
   }
 
   /**
    * transfer youless reading to vz middleware
    */
   function youless2vz($url,$vzurl,$cuuid) {
   $meter=readyouless($url);
   $pwr=$meter["pwr"];
   $cnt=$meter["cnt"];
   $lvn=$meter["lvl"];
 
   $now=date("Y-m-d H:m:s");
   echo "$now $cnt kWh $pwr Watt\n";
 
   // http://wiki.volkszaehler.org/development/api/reference
   $posturl=$vzurl."/".$cuuid.".json";
   $fields=array("ts"=>time(),"value" => $pwr );
   $presult=postUrl($posturl,$fields);
   // uncomment to debug
   // echo $presult;
   }
 
  // the url to read from
  $url="http://2.0.0.94/a?f=j";
  $vzurl="http://capri/vz/middleware.php/data";
 
  // channel uuid
  $cuuid="0cca0870-e695-11e3-8c38-6dc719f70ac1";
 
  // how often to post to middlewhere
  $delay=5; // delay in seconds between posts 
  while (true) {
    youless2vz($url,$vzurl,$cuuid);
    sleep($delay);
  }
 
?>