I’ve been playing around with a homebrew weather station again, I dusted off the code I’d had running on a spare Raspberry Pi and added a few features to it. It’s now logging temperature, humidity and air pressure. I plan to add some more external sensors as soon as the parts arrive from eBay.
The graphs below are live data (for as long as I keep the station running)
The X-Ray scanners I use to produce the images for this series of posts are mainly used for producing 3-D data, they are Micro-Tomography scanners, so they don’t produce a large field of view, but thy do provide high resolution.
This means images like the one below can be a little hard to decipher if you don’t know what’s been imaged.
Continuing the theme of X-Ray images on a Monday morning, here’s another. This is probably easy to guess at. If you look at the full size, you can see there is quite a lit going on in the device. More information under the cut.
I’ve just discovered a nice tool for plotting radio transmission coverage. Here’s where I can expect to get a signal too from my home location.
Yellow shows 0.50 μV signal level, Green is the 1.58 μV signal level
This seems to match up quite well with contacts I’ve had on the two-meter band, but with less power actually used. I’ll have to play a bit more and see how it says my station will perform on other bands.
…lets see what they look like.
These days I work with X-Ray systems. I’m just finishing up commissioning and testing of the latest one, so I’m using it to image various things.
This is a compact fluorescent lamp. At full size you can see the coils of tungsten wire in the electrodes in the glass spiral, you can also see some tiny droplets of condensed mercury at the end of the spiral. It;s this mercury that’s essential for the operation of the lamp, but is also what makes them (slightly) hazardous if the glass breaks.