Ubuntu Touch is an interesting alternative to Android and iOS. But the most critical app (for me), the browser, is feeling a bit underwhelming. Luckily, it brings a compatibility layer called Libertine to run desktop applications, which means it is relatively straightforward to install a normal desktop firefox. Or so …
Some time ago, I wrote about my US-16x08 acting up. So, some time last fall, I decided to open it and see what might be the cause. This is mostly a teardown “manual”, some photos of the chips in there, and some ranting about cheap choices. Oh, and if you …
Before Christmas, I needed a battery case for a last-minute present. Much to my surprise, I had nothing fitting in my big box of parts. So, I went to the overpriced decorative crap store and bought one of those ultra-cheap led lights. Except this one wasn’t cheap. Likely 2x …
My daily driver laptop for about everything for a few years now, running Linux.
00:1f.3 Audio device: Intel Corporation Cannon Point-LP High Definition Audio Controller (rev 11)
12 kHz: 
Null test: 
Positive surprise. Noise floor is below -80 dB most of the time …
Cheap soundcard that I bought mainly to have an analog volume dial on my desk. Has a suspicious “treble/neutral/bass” switch. On my old desk, it created audible noise behind my USB hub, so it went into the parts bin after a couple of years …
Quite some time ago, I had the opportunity to grab one of these “studio” audio interfaces for a reasonable (used) price. It mostly brags with the low noise recording of course. Despite its relatively small size, it has a total of 16 input and 8 output channels, plus …
Slightly outdated but still fully functioning AVR that I got my hands on. Measurements only cover the headphone jack. Connected via HDMI, 2 channel PCM mode.
12 kHz, normal mode, “enhancer” off, “straight” profile:
12 kHz, “pure direct” mode:
Null test, “pure direct”:
Looks good for …
For various reasons, I own a couple of very different audio / headphone outputs (“ADCs”). After one evening, where I dove too deep into the rabbit hole of audio quality, I decided I should just go and measure them.
To be absolutely clear: I have no idea what I’m …
Here is how it now looks like, ‘AA’ type battery for scale:
Ikea has this surprisingly cheap, somewhat accurate and quite living-room-compatible sensor called VINDRIKTNING. In its current state, it displays the particulate matter concentration in a traffic light style display. Of course, lots of people started to pry it …
Yaml code for the Ikea Sensor, copy (and edit) here:
esphome:
name: multisensor
platform: ESP8266
board: esp_wroom_02
wifi:
networks:
- ssid: "WlanGoesHere"
password: "YouWish123"
- ssid: "AnotherWLAN"
password: "topsecret"
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Sensor Fallback Hotspot"
password: "Nope, not for you"
captive …Äcktshually the second flight in 2022, I was just to lazy to write two articles. Nice weather. Here’s a short clip:
Main takeaways:
Alright, let’s get started.
After a lot of Internet, I decided to use PX4 as the flight controller software. The reason for that is that I did not find any cheap flight controllers that fit my needs. Since using some old …
This contains some old, obsolete or otherwise less important information that is here to show the try-and-error process of the scrap drone, or might be of some entertainment value.
Choo choo, all aboard! Originally, I chose to use the particular AVR module (“Baby Orangutan B-328”) because …
The first flight with the new motor, and the first one I can call a flight without quotation marks!
Sadly, the video recording bugged out again. For the last flight, I switched to just recording the laptop screen, but then the video transmission died. I guess fate doesn’t want …
I glued everything together, it seems to work so far. I also moved back the CG and tuned the PWM frequency and max value. I didn’t measure it, but I think I’m around 3-4 A at 5 V, which really is the limit for, well, pretty much everything …
Slightly warmer, almost no wind. This time with the barometer. Still no flying. Here, have a pretty sunset instead. Same configuration as the first flight.
Anyway, a negative result is a result as well. At least I have a reason to go outside in these weird times.
Around 4°C, a little bit of wind. This flight was done without the barometer, using the simple sensor fusion module. This was the oldest configuration.