Month: June 2018

It turns out Kasparian and Titov regularly record covers of Kino, they have many on their little YouTube. This one is cool

https://www.youtube.com/watch?v=WJv5s9Dcu0c

VAT 18% -> 20%. Why do they say that VAT has increased by 2%, not by 11%? (2/18=0.11)

🙂😬🤐

Today was Masha’s graduation from school. She received a Certificate of Excellence. She asks, did Trump sign this himself? )

From observations: several hundred parents came, the hall was full. The ceremony lasted over two hours and was generally quite boring. Children’s last names were called out quite quickly, papers handed out, interspersed with short speeches for all that is good and against all that is bad. However, it felt like I was the only one staring into my phone (work didn’t let go). A hundred percent of the parents around were attentively listening, actively applauding, and rejoicing in the successes of others, not distracted from the process for a second.

And so Masha has finished her third (almost) year at Spring Hill. From September – Longfellow Middle School. It’s eight and a half kilometers from home. Looks like she’ll be mastering the bus, apparently)

Today, I connected a motor from an old printer to an Arduino. Just through a transistor for now, but tomorrow a board that’s easier to control should arrive, and it has overcurrent protection, etc. I still don’t know what will result. Maybe I’ll attach a pencil and another motor for radial movement, and try to make a drawing machine by attaching a marker.

Also today, I tried to use a piezoelectric speaker to produce ultrasound; my generator supports a wide frequency range, up to 1 megahertz, so it’s fun to play with sounds above the upper limit of the audible range, from 20K. You can barely hear a sound over 15K, but if you keep increasing it, an annoying sensation appears. I should experiment on different people.)

They are washing the asphalt in front of our office. By hand

On the topic of electronics – an excellent resource

I can’t tear myself away, lots of useful stuff and things I didn’t know or had forgotten

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.