A radiograph of my new Pixel 6 phone. The Pixel 6 is a big chunky phone with a lot of stuff in it.
This one was acquired using a portable x-ray unit at 80 kV, 1 mAs, and the small focal spot. It’s raised up about 25 cm above the image receptor for a bit of magnification (about 1.3x) and cropped in from the original image.
Managed to catch the SpaceX launch of more Starlink satellites this morning.
Also participating in the show were four planets in the early morning sky: Venus, Jupiter, Mars, and Saturn.
A couple minutes or so after the launch, we spotted the Falcon 9 plume.
This was shortly after the second stage separation and fairing separation. The two small specks of light close to each other are the two fairing halves. The third speck of light just behind and below the other two is the booster stage on its way back to the barge off the South Carolina coast. The speck of light above the rocket plume is Mars.
This shows the fairing halves and first stage booster a little better (lower right). Also visible are Venus and Jupiter in the lower left of the image. The larger blob of light above and to the left of the second stage rocket is just internal reflection of a street light across the street.
I’m excited to start using the Hakko. I expect there will be a bit of a learning curve with the new soldering iron, but I think it will be a nice step up. The old soldering iron will go back to the garage to get used on projects there.
On the workbench for some troubleshooting is a 1950s era vintage RCA Victor 45-EY-3 record player. It belongs to someone in my neighbourhood and came to me via a referral from a neighbour who’s familiar with my penchant for tinkering with electronics.
The owner purchased this recently and had already replaced the tubes, capacitors, a few resistors and some of the mechanical bits before the record player landed on my bench. He said it was sort of working (some mechanical issues with the arm moving), but then stopped turning on. Fortunately, he had a printouts of the service documentation available to look over. On the electronics side, the circuitry is pretty simple consisting of three tubes: rectifier (35W4), amplifier (12AV6), and output (50C5).
After touching up a few solder joints, I found the power switch was kind of dodgy and would work if I tilted it a certain way. I also realigned the muting switch (S2) so that it was oriented the same way as one of the photos in the service manual. That got me to the point where records could play and sound came out of the speaker instead of just resonating through the needle arm. The sound volume was pretty low though, even with the volume pot turned up all the way and there’s also a lot of hum getting into the electronics too. Those are the two main things I need to work on, and the owner will work on the mechanical stuff.
Finally, after almost a year, my PhD diploma is in a proper frame and is hanging on the wall!
The frame came with some interesting mounting hardware. The plastic hangers have a pointy part on the wall side. Insert those into the key hole hangers on the frame side, put the frame up against the wall where you want to hang it, and press against the wall. The pointy part leaves a little dimple in the drywall right where the plastic hangers need to be nailed. Take the plastic hangers off the frame, nail it to the wall where the dimple is, and then hang the frame.
Now I have it hanging on the wall above my computer. Looks pretty good there.