Henrik Carlsson's Blog

All things me.

posted this photo on and tagged it with 3D printing snapshots The Year of Music ΠiFi Music Player

The first print is done but I will need to redo it tomorrow. I forgot that the front mounting holes in the Pi isn’t at the very front so the space between the QR holder and the camera pole is too narrow.

posted this photo on and tagged it with 3D printing snapshots The Year of Music ΠiFi Music Player

The first prototype of the Pi base plate is in the printer.

posted this note on and tagged it with 3D printing Narrating my work The Year of Music ΠiFi Music Player

I’m changing things up for the πiFi Music Player.

The way I intended to make the πiFi I would need to do most, if not all of these and it just makes it too large of a project. So I’ve scaled it back. At it’s core it is still going to work the same way but instead of having a built in power amp and connecting it to custom built passive speakers I’m going to make a device that gives line level audio out and connect it to a pair of powered speakers that Iris already have but rarely use.

Raspberry Pi Zero with a JustBook DAC Zero

At first I decided to do this using a Raspberry Pi Zero and a JustBook DAC Zero and that was what I sat down to work on tonight. Unfortunately I realised that the Pi Camera Module needs a different cable to be compatible with the Zero and none of my usual suppliers for these kinds of things have that cable in stock. As I was thinking about whether to keep working on other parts of it hit me, why not use the Pi 3 that I used before but without the power amplifier hat? It has a line out built in and works with the camera cable that I have?

So tonight I’ve been working on the first iteration of a simple 3D printed base plate to mount the Pi on, with place to stick the QR codes on in front of it and a mount for the camera. So far the camera mount isn’t finished but I do have a prototype sketch that should work for mounting the Pi and the QR codes. I’ll try to get it printed tomorrow.

A screen shot from Fusion 360 and my sketch of the base plate.
posted this audio on and tagged it with The Year of Music

Wow, I’m actually (kind of) recorded something…

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2021: The Year of Music

posted this article on and tagged it with The Year of Music

My yearly theme for 2021 will be The Year of Music. The point of this theme is to get me to do more music related things.


Doing that could be as simple as listening to some music during the day. For quite a few years now I haven’t been listening to much music. I often have my AirPods in my ears but most of the time what I’ve been listening to has been a podcast or, more recently, a YouTube video. For the second half of 2020 YouTube has more or less become the background noise of my life. This is something I really want to change.

I really enjoy listening to music and doing it makes me happy but it’s so easy to get stuck in the hole that is YouTube and podcasts. The podcast part has sort of fixed itself because it feels like I’ve burned out on most podcasts. Now there are a very select few that I actually care about listening to. On the other hand YouTube, as I wrote in the past paragraph, is a growing problem.

And don’t get me wrong, a lot of the stuff I watch on YouTube is great and I really want to keep watching it but every now and then I should turn off the videos and turn on some music instead.

I should probably also commit to listening to more new music, since my interest in whats currently popular has been close to zero for at least ten years now, but I feel like I need to set reasonable goals. So if I do listen to new things, that is good. But if I chose to listen to the same old stuff that I’ve always been listening to, that is also good.


Another way to progress the theme is to play music. I love playing guitar, tinker with synths, recording things and so on but I do it way to infrequently. Especially the recording/producing part has been close to zero for a long time. When I want to record something I would like it to be something that I’ve also written myself but that is something that I need to let go. I haven’t actually finished writing a song for a decade so it’s time to uncouple songwriting from recording an instead record some fun covers or something. I do have a more specific plan here, but that’ll have to wait for another day.

Making things

Making things related to (listening och playing) music is also part of the year of music. Working on the πiFi Music Player for instance is absolutely something that furthers the theme.

Setting up my home studio

If I were to calibrate the monitor speakers of my home studio or rerouting cables, setup synths and so on, that would also be compatible with the theme but I need to make sure that I don’t get stuck in preparing for a recording that I never make.

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posted this photo on and tagged it with snapshots The Year of Music

I’ve had the MoPho synth for so many years now but I’ve never really felt like I was able to program it the way I wanted. Today however, things sort of clicked for me in a new way. 😊

posted this note on and tagged it with The Year of Music

My yearly theme for 2021 will be The Year of Music. I was going to write more about this tonight but I ended up playing music instead. I consider that a win.

I’ll write more about the theme and what I want to do with it another day.