10002 I2C connectors

Intro In my first iteration of sensors I relied on wire connections between sensors and the actual node board. The result for a motion sensor and a temperature and humidity sensor looks like this The problem with that is that during sensor modules assembly run I spend quite a bit of time on the wiring. On top of that, the result is a mess of small wires inside a box. It makes it hard to… Continue reading

The coolness of RGB LEDs

Intro Ahhhh LEDs….don’t we love them? Today there is a huge variety of them. But there is one type I particularly like. These 5 mm RGB diffused LEDs, easily available from various sources and quite cheap (amazon.de, aliexpress, ebay etc). Here’s why I like them They are super bright. According to some datasheet which may or may not be what you are buying from less reputable sources, the green LED peaks at 5000 mcd at… Continue reading

Wine lamp

Intro My old Ikea GRÖNÖ lamp was long due for an upgrade to LED, but I wanted to use a strip not just buy a bulb. That is because I wanted the light controllable through my 1000² home automation system. Now, the cool thing about building my own dimmers is that I could dim the light down to very low duty factors, which is pretty good considering the way human eye responds to light levels. As a… Continue reading