Henrik Carlsson's Blog

All things me.

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Hurray! I’ve made my first 3D model (or is it sketch?) in Fusion360. It’s a clone of an IKEA phone stand because it seemed like just the right amount (“lagom “) of challenge.

Tomorrow I’ll try to 3D print it!

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The plan right now is to 3D print a sort of beta enclosure for the πFi Music Player. Maybe the final product will have an enclosure built out of wood and/or metal, so maybe this is just a temporary solution but it at least gives me something less brittle than a couple of Lego bricks to hold it together while I experiment with it.

We have a 3D printer at work that I can use but I’ve never 3D printed anything, nor have I 3D modelled anything so I have quite some learning to do.

A friend recommended that I’d use Fusion360 because it’s a very capable program that’s also free for academics. I downloaded and opened it, and quickly closed it again because it felt like something completely alien to me.

The same friend then recommended this tutorial on Fusion360 to get started, and while I haven’t applied what I saw in it yet at least it feels like I now know somewhat where to start.

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Tonight I tried to get the volume control working for the πFi. I followed a guide on how to make it, but I failed miserably. I’m still not sure what it is that isn’t working, and that’s the problem.

I have zero prior experience with using the GPIO’s of the Raspberry Pi, and using them while using the HiFiBerry makes it even more complicated so I need to rethink this.

I’m going to place an order for a proper break-out board for the GPIO and some additional components to be able to breadboard and try things out, and I’ll need to put the physical controls part of the project on hold until that has been delivered.

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Time for an experiment. November will NoPodcastvember. I’ve just deleted Overcast, so let’s see if this works.

On a related note, does anyone have any suggestions for great audio books app? Apps for playing back files that is, not subscription services for audiobooks.

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Soldering a bit to see if I can get the Pi to read the changes in the potentiometer and use it as a volume control.

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All Saints Day candles.

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I’ve started dabbling with amixer and alsamixer for the PiFi’s volume control. Seems fairly simple. Next, I need to make a physical volume control.

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It works!

posted this article on and tagged it with The Kid's Music Player ΠiFi Music Player

Time to test the HiFiBerry as well.

posted this note on and tagged it with Narrating my work The Kid's Music Player ΠiFi Music Player

The Raspberry Pi Camera module does seem to work for the music player, but it did cause me some headaches initially.

The first problem I encountered seemed to stem from a sloppy physical installation of the camera. Once I removed it from the Pi and inserted it back in, it worked.

The second problem seems to be that by default the camera cropped the sensor data, so the QR code couldn’t be read as close to the camera as I wanted. Adding --prescale=640x480 as and argument to zbarcam appears to have solved the problem.

Tomorrow I’ll try using the HiFi Berry Amp2 as well.