7014_feat

La Crosse WS-7014 weather station

I was offered a weather station for X-mas :
pommier_boitepommier

It measures indoor hygrometry and temperature and thanks to a wireless sensor it also measures outdoor temperature.

You can buy it from “Nature et Decouvertes”. It is a special edition of a “La Crosse Technology” weather Station.

Reference at the back : WS-7014-IT
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Wireless Temperature Sensor

The station comes with a wireless sensor for outdoor temperature. It is powered by two AA 1.5V batteries, reference : TX29-IT

The TX29-IT sensor comes without LCD screen whereas the TX29D-IT has one :
pommier_sensorpommier_tx29tx29d_2

The sensor and the station feature the “Instant Transmission Plus” technology from “La Crosse Technology” in the 868MHz band.

But…

What the station misses is a serial port at its back so that we can read the information gathered from its internal sensors and from the wireless sensor(s). Indeed what’s the point of measuring a physical entity then digitizing it, then wirelessly transmitting it, then displaying it on a LCD, if in the end you don’t have a mean to store this digital information or to send it to a PC ?

Objective : Home automation

The sensor is sold as spare parts for about 13-15 EUR. It would be perfect for my home automation project. I would just have to dispatch a bunch of such sensors in different areas of the house (and outdoor) and monitor them from a PC which would control the HVAC, the heating, etc.

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At first I wanted to use the station as a receiver and read the indoor temperature/hygrometry and the outdoor (wireless) temperature from any available signal, but after investigations I obtained something better.

Let’s hack this WS and find a way to retrieve the information from a PC !

This what we’ll do next…

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