Henrik Carlsson's Blog

I’m filing these away here for now. They will likely be the speakers of the πi Fi.

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I finally had some studio time yesterday.

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”Well, tonight, thank God, it’s them
Instead of you!”

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Yes, this tutorial more or less works for me now. The more or less part is that the values I read is quite unstable. I wonder if that is because I’m not using a proper power supply for the Pi. I need to investigate further another day.

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Slight update on the πiFi: I’ve got a power button an power status LED working on my GPIO test Pi now. I’ll need to go to bed soon but I think I’ll give the level potentiometer a go first.

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It appears that I and the rest of Europe will have to wait until March at best before we get to watch The Madalorian. That feels a lot more like a thing of 1999 rather than 2019.

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New plan instead of the now abandoned NoPodcastvember: I’ll switch from Overcast to Castro.

The idea is to still listen to podcasts but to train myself into being more conscious of what I’m listening to on an episode basis, rather than a show basis. If a show generally makes me annoyed but occasionally talks about things I care about I’ll just skip every single episode that isn’t clearly about the things I care about.

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Today my mom and Lars picked up the kids from preschool and will be in our house with them until tomorrow while Linn and I are at a hotel and spa. A very well-deserved break for us.

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This is just an obligatory post to keep my streak going. It feels like things at work have been a complete chaos for the past few weeks, so I’m so tired that I can’t really think straight.

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So after four hours of work, in more or less a panic, after a regular eight hour workday – turn’s out the latest version of Avid MediaComposer installs an AMA plugin that completely f*s up Pro Tools ability to play video. I hate computers.

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My kids have just found what I can only describe as weaponized children’s entertainment: a ”I am a Gummy Bear” meets ”Baby Shark” video.

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Today I broke NoPodcastvember. I just had to listen to a podcast to quite my mind a bit.

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And once again I managed to stay up way too late. The Raspberry Pi is just so much fun that I never want to go to bed.

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Tonight I managed to sit down and experiment with the GPIOs of the Raspberry Pi. I think I’m getting the hang of how they work now but I gotta say, this is the first thing I’m doing with the Pi where I feel like it lacks a lot compared to the Arduino.

Anyway, I got some basic buttons working. Tomorrow, or whenever I sit down with it again, I’ll give the level potentiometer a go again.

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Iris hasn’t quite gotten the hang of playing Super Mario before, but yesterday it seemed to just click for her.

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I really should have gone to bed an hour or two ago, because I’m unbelievably tired. Instead, I got stuck trying to make 303 like patterns and sounds with Ableton Live.

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Today was twelve hours straight of practical exams at work, so now I’m completely drained. I’ve been sitting in an an armchair, being a YouTube watching zombie for the past hour.

Time to go to bed.

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Everything I was supposed to do at work today took a whole lot more time than it should, so I didn’t have the time to get a 3D printing going. I think I need to wait until next week.

Also, the breadboard stuff that I ordered earlier arrived today! :)

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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!

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Time to test the HiFiBerry as well.

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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.

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It appears that I was quite good at documenting my work on the music player, so I’m up and running again now.

Previously I’ve used an old USB webcam (actually a PlayStation eyeToy Camera) as the scanner and it has worked fine. However I wanted something different in the long run, so yesterday I bought a camera module for the Raspberry Pi.

The main thing I’m doing tonight, apart from getting back to where I were, is to test whether this particular camera works or not. So far it has not been plug and play but maybe it was foolish of me to expect that. As I’m writing this I’m doing a apt-get update and apt-get upgrade and then I’ll have to do some configuration in raspi-config.

Also, I’m starting to get reaaaaaaally tired so I’ll probably call it a night pretty soon. I blame daylight savings time.

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Linn and I finished watching Stranger Things Seasons 2 and 3 yesterday and since we don’t have any other show queued up, now seems like a good time to resume my work on a music player for the kids.

Right now I’m mostly trying to figure out how far I got the last time I worked on it.

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So I guess I’d very much like any recommendations of easy to use shopping list apps where I can also share lists with Linn.

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iOS 13 managed to turn inputting things into Remainders from a simple thing into an insanely enjoying one. Having to pause for a second between pressing return on one item and starting to write the next one is terrible when compiling a shopping list.

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iOS 13 bug of the day: Deleting a file in Files always results in a blank view and me having to navigate back to the directory in question manually.

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After having had it disconnected for a long time I’m currently plugging my DroboFS back in to migrate some files from it before finally sending it to a farm upstate and I gotta say, the slowness of something as simple as having it boot and connect to it makes me wonder why I ever got the damn thing.

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Is it ATP that has changed or is it me? I feel like I get annoyed when listening to them so much more often these days.

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I just removed the clear case from my iPhone 11 and oh my God it feels so much less clunky now.

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The sky looked both beautiful and ominous this morning.

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We’re three episodes in on *Stranger Things* season three. So far the lows are lower than before because it gets sillier than usual but it’s also much more scary than previous seasons so I think I like it more than season two.

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This is probably a case of “old man yelling at clouds”, but I am 100% onboard with Marco here. Why do we keep breaking what works?

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Here’s a photo of Iris’ most recent LEGO set that we built earlier this week. This post is mostly to test Sunlit.

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