A musical Pi

So I’ve had this Raspberry pi habit for a number of years now. For those of you who don’t know, a raspberry pi is a very useful little computer that can be used for projects and learning. At the time of writing (oct 2022) they have sold over 40 million pi and have been in production for about 10 years.

They have over time updated the computer – at first it was single core, now evolved to a quad core, improved ethernet and usb specifications. I don’t yet have a raspberry pi 4 (the most recent version) but people say it can just about do as a replacement desktop / laptop computer.

In short it’s a heck of a lot of computing power for very little outlay (although at the time of writing they are in short supply and the price has gone up a bit). A couple have even been sent up into space and reside at the iss.

People do all sorts of things with their pi  and the web site that you’re probably reading this from has been hosted from a Raspberry pi for over  4 years. It’s incredibly low cost hosting (it works for the machine less than $10 per year) I use Debian as the operating system and it runs a full LAMP stack. It has never locked up due to load (although admittedly I don’t get a monolithic amount of traffic) but it serves well and protects things and currently has over 1400 items in it’s firewall and hums along just fine.

I’ve wanted a media player for a while now and considering I have a spare pi I created this!

It’s a Raspberry pi with a DAC hat (Digital Audio Converter) mounted on a hunk of perspex that was given to me about 10 years ago. The default sound output from the PI is not great (although functional) so I spent about $40 to purchase the iqaudio DAC and the difference in quality of sound is amazing especially at low volume (which is great because I live in a unit and I hate people that sodcast).

Mounting was a bit of a debacle – I wanted brass feet (who doesn’t like a bit of brass bling) and  in the end just used super glue to hold the device on to the perspex (thanks to this product being open source I could get a template that made placement and positioning fairly straight forward).

The next step is what to do with regards software. The problem is there is so much to try! I’m using cli based access, vnc access, stand alone apps and also looked at total media centre based installs – because the PI runs form cheap micro SD cards it’s not that difficult to build a complete re image of the machine and move data about.

In short, if you want an affordable way to learn about computers and build your own stuff you can’t go wrong with a Raspberry Pi!

(authors note, I know cable management needs work!)

Related links

Raspberry pi website444
https://www.raspberrypi.org/

DAC hat from little bird
Raspberry Pi IQAudio DAC+

Pi’s in space!
https://www.bbc.com/news/uk-england-cambridgeshire-59747590

Visual Literacy and Creativity

Not a chicken

I remember a conversation I had with my late father – he was the head of the local PTA at my primary school. I think I was about twenty years old when we had this chat. In short, someone from the government  education department came to talk to the PTA about the importance of the arts and creativity.

They did the following exercise. They got the group of adults, and sat them down, and asked them to draw something, the results were interesting. Most of the work didn’t look that advanced; there were no great artists.

What they did discover is that most people don’t draw much after about the age of twelve  or thirteen  years (this includes the humble author) this fact was reflected in their art. 

For a number of years now, during the month of October I’ve been plonking away, taking part in the “Inktober” phenomenon. Which is basically the challenge of creating a drawing a day for a month. I’m not good at drawing but it is an amazing process.

The Australian artist Brett Whiteley, once recommended (and I’m badly paraphrasing here) that a student get a large roll of brown paper and sketch every day for a couple of hours for at least six months. At that point apparently a degree of fluidity, a natural and unique style starts to evolve.

It’s a thought that sticks in the back of my brain for some reason.

All this computation we indulge in is amazing, but an inadvertent side effect of all this technology has been the proliferation and cause of a monolithic amount of very bad typography.

Do you know what well presented text looks like? Text that has readable line lengths, no widows or orphan paragraphs? Kerning? You probably don’t because the quality of typography (Good typography) is obliterated via our screens and formatts and the need for text that can be reflowed via  anything from an apple watch to a 36 inch monitor. 

The subtle knowledge that goes into layout and how the text of a book should look, the structure (that involves a table of contents, an introduction, an index, page notes, quotes etc) took about four hundred years to evolve. We are losing this.

It’s interesting, in that Visual Literacy is not something that people talk about. But the ability to understand and communicate, to stimulate visual interaction, is an important skill. I think what I’m trying to say is that there is now this sort of creative blind spot in the human psyche. 

People don’t value the visual because you can go up to a chain store, buy a premade look. It’s presented as “Hip” or “Cool”. We are losing something and it’s got to do with algorithms, and a disconnect from the physical.

I’ve been picking away at this blog article for a few days now and it’s admittedly a bit rambling a bit all over the place. But I’ll try and tie it all together with this.

During the pandemic and lock down, like so many people I indulged in binge watching of various movies, shows etc. One of those shows was “Survivor”. What I found interesting was that more often than not the people who made it to the end, and won the show nearly always had a creative project. Whether it was carving a stick with pictograms, or making and playing a drum. To help them physicaly survive, creativity and its expression was something sustaining. 

There was a Jazz band called “The Modern Jazz Quartet ” I’ve been listening (ironically) to their last concert album for a number of decades now. All of the members of that band have now passed over the rainbow bridge (To use a cat / pet lovers term) but whenever I listen to that beautifully crafted music, I pretty much always experience a positive happy energy ( a natural dopamine / serotonin hit). Their music makes me happy. I think that this is an incredible gift from beyond the grave for these amazing musicians to have passed on.

My advice for the day is get up and draw something. Build something. Play some music or write a poem. Paint a picture. It might just be good for you. Maybe you can reflect on the degree of visual literacy, creativity that exists in your life?