Thursday, December 29, 2022

Xmas Pi

 Small computers are BIG!

 

 A network of small computers can be more effective than one large master computer.  Look at it like multiprocessing.  Automotive computer systems are a good analogy.  The engine management is a dedicated task, so you need one computer to focus on that task.  But there are other functions that need to be managed like the body control module, or the anti-lock brake module, or the suspension control module, or the window control module, etc.  Many small computers can be more effective at managing a system than a single Master Control Module.

We all have many computers now.  So lets diversify a little more.  This is a Raspberry Pi computer.  I had a couple of these boards laying around, and I thought maybe I can do something with them over the Xmas Holiday.  This is also kind of a Scrapper project, so, for the most part, I am going to use materials that I already have without buying new stuff.  Now, having said that, I did start by buying new stuff.  I had the Raspberry Pi board, and SD Card, but didn't have a power supply, display, mouse or keyboard.

My aim was a "small" computer, and I kinda took that literally.  I got a 3.5 inch HDMI Touchscreen, and a tiny keyboard with a mouse pad.  Well that was neat, but I can't see the incredibly small characters on the screen.  I was using my readers, and a magnifying glass to see what was on the display.  So, when I needed to I would hook the Raspberry Pi up to the 32 inch TV, and then I could see it, LOL!  The mouse pad on the tiny keyboard was hard to use as well, so I wound up using an old USB Mouse.  I wanted a bigger display, but didn't want to buy a display, So I wound up using an old 720p TV that we bought about 10 years ago.  The resolution is 1280 by 720, not bad for a "Toy" Computer, LOL!

It is an Element Brand TV, and I was never impressed with it as a TV, but for my Xmas Pi it works good.  The sound system has no Bass, and I need to fix that for sure.  Every TV produced now has a mounting point for a wall mount bracket.  I have used this mounting point to hold the Raspberry Pi.  I fabricated an Aluminum Plate that fits the screw holes in the TV, and also the screw holes in the Raspberry Pi to be an adapter.  Then it was a matter of finding some screws, and a really short HDMI Cable.

Now that is a lightweight computer.  It is impressively powerful too.  It has wired ethernet, and WiFi, plus Bluetooth.  At the moment it is playing Black Sabbath, albeit with insufficient Bass...  Big Puppy Sigh...  I kinda wish I had a 1080p Touchscreen, but there is always room for expansion in the future.  The wall mount plate is a VISA Standard, so in the future, when I find a better monitor my little Xmas Pi will bolt right on there...  Yee Haw!


Friday, June 24, 2022

Eight Planets to See...

 ...and More...  This is a pretty auspicious display of all the other planets in our system.  All of the major planets in this solar system, eight of them, are able to be seen from our vantage point at this time.  This is pretty rare.  Of course you can't see all of them with eyes alone.  It takes some time to look at the whole line.  Pluto rises at around 11:00 PM, and then you can see the whole line of planets stream over the eastern horizon until dawn.  Having a relatively powerful telescope will help a lot...