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Feynman Path Integral Perspectives

YouTube can get eerie at times. Tonight it came up with Feynman’s Infinite Quantum Paths | Space Time and Math vs Physics – Numberphile. Both get into Feynman’s insight into quantum mechanics but one is from the viewpoint of a physicist and the other from the viewpoint of a mathematician. Of course, there are a […]

What happens when you open-source a soldering iron

The TS100 soldering iron (Amazon) has been getting a lot of buzz. It’s on github and both software and hardware specifications are open. It runs off 12 to 24 volts DC so a battery pack from a power tool or laptop will run it. A laptop power supply is a common resource for it as […]

‘Old’ People v Tech

Linus got himself in a bit of hot water at YouTube with Old People are the WORST at Technology – Then vs. Now Ep3. Yes, he’s poking fun at stereotypes. The likes to dislikes runs at 25k to 4k so there are are a lot who don’t see the point. The fact is that a real […]

Soldering tutorials

Hackaday says the key to soldering is to pace yourself. “When writing my last article, I came upon something I thought had been lost to the seven seas of YouTube: the old-school “Basic Soldering Lesson” series from Pace Worldwide.” Speaking of which, we’ve seen many things designed to educate, but one size certainly does not […]

Nostalgia – a learning motivation?

Retro Radio: W8CDX Takes Field Day Back to its Roots – “Some younger radio amateurs may not realize that ARRL Field Day has been a staple operating event for more than 80 years.” “We had a lot of fun putting up another 1930s-style station for Field Day 2017,” said Eric Tichansky, NO3M, the trustee of […]

Dave Jones hosts Shahriar Shahramian and the discussion is something else.

It’s a geekfest. Shahriar Shahramian from The Signal Path met up with Dave Jones of EEVblog and discussion is well worth some time. It’s broken up into three videos each with their own focus. 1. Youtube & Bell Labs 2. Science, Debunking & Education 3. about the millimeter wave electronics and 5th generation RF These two […]

CI-V simplified by modern tech for Icom radio control

There’s a simple eighth inch jack on the back of most Icom radios that provides a communication interface for control purposes. If you look around for how to tie this into a computer, most of what you’ll find is about converting to a standard RS-232 serial port. That is soooo old tech! I like what Guy […]

CO detectors

The attraction of a First Alert model CO1210 was the promise of a ten year life on battery. It was installed on 1 May 2015 and declared defeat on 26 March 2017. That was a disappointment. The battery is a cr17335 Manganese Dioxide-Li/Organic Electrolyte (Maxell Datasheet) for 3 volts and 1.75 Ah. The Sanyo (datasheet catalog) […]

Complicating decisions about small computing for low power stand alone devices

The Raspberry Pi Zero W was announced on the fifth anniversary of the original RPi. TechRepublic has the story — Raspberry Pi Zero W: The smart person’s guide. “This comprehensive guide covers everything you need to know about the $10 Raspberry Pi Zero W, the latest tiny computer from the Raspberry Pi Foundation.” The price […]

GPS and time

What time is it? and Where am I? – two seemingly simple questions but just look what happens when you start to explore the depths of the questions. Mario Corchero is doing a talk on It’s time for datetime at PyCon coming up in May. “We will also speak about different standards of time, time […]