Sebastian's Blog

Things that keep me busy

General purpose RF receiver

In this blog post, I wrote about my sensor project which transmits it’s measurements via a 433Mhz wireless communication link. On this page I will describe the details of my self built receiver which receives data from this sensor. Goal To build a general purpose RF receiver module which receives messages from a 433 Mhz wireless link (for example from my self built RF sensor) and forward the received and decoded message to my Linux server via USB, where they are further processed.

Making PCB's for the wireless temperature and humidity sensor

In my previous post I showed you my wireless temperature and humidity sensor project which didn’t have a nice home yet. So today, I’m going to show you how I developed my own PCB to build a more useful and permanent version of my sensor, which I’ll place around my house to monitor the climate inside and outside. There are many different ways to fabricate you own PCB’s at home, the method I choose was to use photo-resist laminate since that way I could use my inkjet printer and didn’t have to buy a laser printer (for the toner-transfer method).

Wireless temperature and humidity sensor

In the scope of my personal home automation project, it is vital to know the temperature and humidity in rooms and outside. Besides logging this information and presenting it on a screen or on my cell phone or something, it can be used to control heating, air conditioning or ventilation. With this in mind, I built my own temperature and humidity sensor, which transmits it’s measurements to my central receiver (connected to my home-server) for further processing.

Building your own IR Thermometer Part 1

How about building your own infra-red (IR) Thermometer? Instead of buying a finished product, you might be interested in building your own IR Thermometer instead. This way, you can learn how it works and you are able to design it exactly the way you want it to be. For example, how about building wireless sensors which transmit data to a central receiver unit? In this article, I’ll show you the basics.