Sebastian's Blog

Things that keep me busy

How to solder a thermal fuse

For my next project, I needed to build in sme thermal protection which would cut off the power in case of overheating. The way to do that, is to use a thermal (cut off) fuse which is a one time use circuit breaker which disconnects the circuit once it reaches a certain temperature. Once the fuse has blown, it needs to be replaced. My local hardware store had a fuse from “Elmwood Sensors” of type “D076-002” in stock, which is a thermal cut off fuse which blows at 77°C.

Smart phone controlled LED lamp

I was meaning to put this up for quite a while now. Back in 2011, I designed and built a ceiling lamp which I wanted to share. The end result Goal It started out when we wanted to improve the lighting situation in our living room and I was initially looking for an off-the-shelf lamp which full fills our needs: potential to provide a lot of light (>8000 lumens for our ~30m^2 room) dimmable indirect lightning minimalistic (& invisible?

Garage door controller – part 1

In my garage I have a door opener from the norwegian firm Edlandsporten. Here is a picture of the device and the official brochure: Unfortunately, the included wireless remote controll has broken down and I need a replacement for it. I contacted the manufacture and they offered me a set of two new hand transmitters for a ridiculous price of 1000 NOK (~ 125 EUR).

Garage door controller – part 2

The finished PCB has arrived quite a while ago now and has been assembled as well. Time to upload the final part of this project to see some results. I selected Beta Layout as the PCB manufacturer for this project with quite satisfying results. I especially liked that they sent me automated pictures of the board after each manufacture step, which turned out to be very useful. Using those, I was able to detect that the holes had been drilled using the wrong drill sizes.

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.