Heatsink Tester
Intro It’s quite a common problem when building electronics that some components need cooling which is usually done through some sort of heatsink and optional fans. Choosing the right cooling solution...
View ArticleSit.Up
Intro Sitting for long periods has become more common in today’s jobs causing serious health issues. Unfortunately the plethora of activity trackers fail to address the issue: being rather active while...
View ArticleActive probe
Intro While working on the capacitive sensor for the Sit.Up project I stumbled about a common problem: connecting an oscilloscope or the Analog Discovery to the capacitance measuring pin disturbs the...
View ArticleMini ikea molgan hack
This does not deserve so much attention, but here it is. I got one of the Ikea Molgan motion sensor lights and thought it is too bright for the application. The light has 5 LEDs inside and the tipical...
View ArticleCheap China
[This article is alive and being updated with things that I use]. This is a summary about my experience with cheap electronic modules from China. I have used quite a few throughout the years, so there...
View Article1000.1000
[Ths project is work in progress in an incipient state. Check out the related pages: Lessons learned and why I did what I did Hardware and Software]. Intro I have enjoyed building small home automation...
View Article1000.1000 Lessons learned
What? This page covers things I have learned and why I did what I did in my 1000.1000 project. Some experience, random calculations, opinions and thoughts. Battery philosophy So what is the battery...
View Article1000.1000 Hardware
[Under construction. Check out The intro in the meantime] Which radio? The radio used to transmit the data between nodes is one of the crucial parts of the system. As mentioned in the Lessons learned,...
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10002 Architecture and Software
This article is part of my 1000² Smart Home project. Check out the Architecture and Software and then move on to Hardware. An most importantly, check the Lessons learned and why I did what I did. There...
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Bosch glue pen teardown
Intro My cheap plug in hot glue gun died and looking for a replacement I found this: the Bosch GluePen What does it do? it’s a hot glue gun for 7 mm glue sticks that warms up in 15 seconds. Charges via...
View Article10002 Temperature sensors?
Intro There is no doubt, that integrated temperature and humidity sensors are the way to go at the moment. I had quite a bit of look at a wide range of sensors and settled for the SI7021. Silabs has a...
View Article10002 Motion sensors?
Motion sensor madness Picking the right one is not trivial. From left to right – Osram Nightlux, Ikea Molgan, Ebay sensors with sensitivity and timing adjusment (BISS001), smaller ebay sensor with no...
View Article10002 Short assembly run
Brief progress It is quite clear that my smart home project is going quite slow. It is not that I spent a lot a time on it, but that I have been pretty busy with other life things. But it is moving...
View Article10002 Software
This article is part of my 1000² Smart Home project. Check out the Architecture and Software and then move on to Hardware. An most importantly, check the Lessons learned and why I did what I did. There...
View Article10002 Control panel horror
Intro I have been making some slow progress with my smart home project. I have completed a small assembly run of motion sensors, there are plenty of things that are working and I shifted some focus on...
View ArticleThe basil speaks to me
Intro Part of my home automation system is monitoring the well-being of various other non-human species around the house. So i started with the plants. Since they are mostly fixed creatures and...
View Article10002 Short assembly run no 2
Intro It is quite clear that my smart home project is going quite slow and erratic. Following the other assembly, I made another batch of 5 sensor nodes. These are meant to use the new soil sensors,...
View Article10002 Zen
Zen At some point I though about building the smallest PCB for a sensor node that I could. Hence, the ZEN was born. The PCB is small enough to fit on a holder of 2 AA batteries. Where I have only build...
View Article10002 Screens and controls
Intro There is no point in having a smart home if you don’t see interesting information or control things. The traditional way, ever since the concept of smart home came to be, is to have some sort of...
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