John's blog

Talking about technology (mostly)

About Jay Jay

Hi there. My name is John Elliot V. My friends call me Jay Jay. I talk about technology on my blog at blog.jj5.net and make videos about electronics on my YouTube channel @InTheLabWithJayJay.

What Is Momentum? (joke video)

Posted on 2022-12-26 [Monday] by Jay Jay

I’m gonna add a new category to my blog, called the Hall of Fame. In this category I will file the best stuff I find on the internet. I’m gonna start it with this: What Is Momentum? (joke video).

Solder alloys

Posted on 2022-12-23 [Friday] by Jay Jay

A great Wikipedia page about solder alloys, including info about melting points.

There is also this Alloy Temperature Chart with similar info.

Object Oriented Programming vs Functional Programming

Posted on 2022-12-22 [Thursday] by Jay Jay

I enjoyed watching this YouTube video: Object Oriented Programming vs Functional Programming.

Graphing calculator

Posted on 2022-12-22 [Thursday] by Jay Jay

I’m keeping my eye out for a graphing calculator. Haven’t got the money to buy one just yet, but am watching eBay to get an idea of the prices. You can see at Officeworks the choices are basically:

HP Prime Graphing Calculator
Casio Classpad Colour CAS Calculator fx-CP400
Casio Colour Graphic Calculator fx-CG50 AU
Texas Instruments Inspire Calculator CXII-CAS
Texas Instruments Graphing Calculator TI-84 Plus CE

There’s some reviews and demos over here:

Speedy Bend – Resistor Lead Forming Tool

Posted on 2022-12-22 [Thursday] by Jay Jay

So I got myself some of these Speedy Bend – Resistor Lead Forming Tools. There’s a video on YouTube about how to use them: ProbeMaster Speedy Bends: Axial Lead Forming Tools.

Wikipedia: All public logs

Posted on 2022-12-21 [Wednesday] by Jay Jay

Today I discovered this on Wikipedia: All public logs. It’s interesting to see that for something as huge as Wikipedia they still only process a command (vs query) every few seconds.