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Writing straight from the dentist’s chair. Getting dental treatment in the USA is hardly ideal. But since I don’t have much choice, I’m getting a crown here.

They scanned my mouth with a 3D scanner, and the scan was immediately sent to a milling machine where a crown made of lithium disilicate glass-ceramic was carved out. And here I am with a new tooth. The technology is called Cerec/e.Max.

Can you recommend a mobile phone for seniors with Viber/WhatsApp support, which comes out of the box with an adapted UI (large font, clear concepts, etc.), and is very reliable and foolproof (hard to break something by mis-clicking)?

For rapid prototyping, we are missing something like this:

A metal plate with elongated slots inside, which can be used to fasten this thing to others of different sizes and configurations. Essentially, it’s akin to a children’s construction set. However, typical children’s construction sets are made of cheap aluminum or flexible plastic, which makes the structure easily bendable, and it’s impossible to create anything serious from such parts. Plus, they are usually not even fully sold. I have a whole box of Lego Mindstorm ev3 nearby. Lego constructions tend to be quite shaky, and that’s not easily fixed, but you can buy additional parts, you can reinforce it by increasing the number. Plus, the things I’m looking for could be bought in sizes and types needed for a specific prototype.

Electronics have moved into the office. Over the weekend, I bought a Tenma 72-3060 oscilloscope. I plan to pair Arduino with Lego Mindstorms, operate a stepper motor salvaged from an old inkjet printer, and try to do something mechanical with it. I tinker in the evenings after work. As a quick experiment, I plan to make a simple barcode scanner from an LED, a photoresistor, and an Arduino. A DAC/ADC PCF8591 board is also on its way for signal generation experiments. In my next post, I’ll publish a wishlist about rapid prototyping, perhaps someone knows about it.

“We are facing great challenges, but I am ready for them,” added the North Korean leader.

Did they really understand each other correctly?)

Purchasing an Oscilloscope

In the café, local newspapers with photos of all the arrested locals are lying around. There’s a note stating that being arrested does not imply being charged. Yet still, it seems as if the arrest itself means people must be warned. Next to the photo are names and reasons for the arrest.

Upgraded my workspace. Now if I swivel away from the computer, above the keyboard hangs a second monitor. I display sheet music there, or put on various helpful videos.

Masha has her dance recital today. In the church

There’s something to it. The second photo from California) in the center – Masha (from the first photo)