Jon Nordby

Head of Data Science @Soundsensing, applying Machine Learning to sound and noise. Occational maker @Bitraffineriet

[Jon Nordby @jononor]

I gave an introduction to Machine Learning for Microcontrollers using MicroPython at PyData Berlin earlier this year. Talk is now available at: https://t.co/jBZo6hA4C9

[Jon Nordby @jononor]

Lately I have been working on #machinelearning for @micropython for running on #microcontrollers and it is starting to get into pretty good shape!
Project: https://t.co/2hzhQ6aEwW

[MicroPython @micropython]

MicroPython v1.24 is here!
This release has RP2350 and ESP32-C6 support, a RISC-V native emitter and common TinyUSB code

[Jon Nordby @jononor]

@OpenAcoustics 100 meters, wow, that is very cool!

[Jon Nordby @jononor]

@chillgates_ @geerlingguy @OpenSauceLive @beneater Ahahaha, I was thinking about the same scene

[Jon Nordby @jononor]

@geerlingguy @OpenSauceLive @beneater Very nice battery holder! Looks like it will work with a range of different coin cells

[Jon Nordby @jononor]

@ricalchiro @BiciBandido The truck was in the wrong. The truck should never have tried to pass, when there was clearly not enough space to pass safely. In general, do not pass when it is not clear in the opposing lane. Overtaking a bike is just like overtaking a motorcycle or a car - use the other lane

[Jon Nordby @jononor]

@ChristophMolnar Suprised at the small differences. And the quite inconclusive results of whether a smaller subset is actually beneficial. I would have thought that at least some randomization was needed for reasonable performance

[MicroPython @micropython]

MicroPython v1.23.0 is here!
Dynamic USB devices, revamped webassembly port, openamp, tls, vfs modules
https://t.co/Abgfv95bos

[Jon Nordby @jononor]

New #MachineLearning paper and dataset is out! The AeroSonicDB (YPAD-0523) Dataset for Acoustic Detection and Classification of Aircraft.
Get it fresh off #Arxiv now! https://t.co/qHqxmD5vhk #noisepollution #noisemonitoring #audio

[Jon Nordby @jononor]

@jenschr @carlmathisen A classic ;D

[Jon Nordby @jononor]

@jenschr @carlmathisen NP! In general any bytes below 32 decimal in ASCII is highly suspect, those are all non-printable control chars. In this case you got decimal 8 aka "backspace"

[Jon Nordby @jononor]

@jenschr @carlmathisen Python
b = bytes([123,34,99,109,100,34,58,34,117,112,108,111,97,
100,105,110,103,34,44,34,112,97,114,97,109,34,58,
34,48,34,44,34,102,105,108,101,34,58,34,
100,55,97,8,97,53,53,55,101,49,49,49,49,
102,54,97,52,49,54,99,49,55,52,50,52,98,48,55,49,51,51,100,34,125])
print(b)

[Jon Nordby @jononor]

@jenschr @carlmathisen b'{"cmd":"uploading","param":"0","file":"d7a\x08a557e1111f6a416c17424b07133d"}'
There are non-printable characters / escape codes in those byte. That is not valid JSON

[Jon Nordby @jononor]

@jenschr @carlmathisen b'{"cmd":"uploading","param":"0","file":"d7a\x08a557e1111f6a416c17424b07133d"}'
{"cmd":"uploading","param":"0","file":"d7a557e1111f6a416c17424b07133d"}
JSONDecodeError: Invalid control character at: line 1 column 43 (char 42)
There are non-printable characters in those bytes

[Jon Nordby @jononor]

@jenschr @carlmathisen This seems like Python. How are you decoding those bytes?

[Jon Nordby @jononor]

Added some colors to the emlearn logo - also add a basic brand color scheme. Basic but workable - pretty happy with it overall. #machinelearning #tinyml #embeddedsystems #microcontroller
https://t.co/yh9yhZD0jC

[Jon Nordby @jononor]

@PEDUARD @jenschr Giving a warning before attacks has been done before, and even has basis in international law. IDF specifically has done this several times. An accessible summary can be found in Warning Civilians Prior to Attack under International Law: Theory and Practice (Baruch/Neuman)

[Jon Nordby @jononor]

@matt_trentini @anne_engineer 250 editions! That is amazing. Great job

[Jon Nordby @jononor]

@lostanlen @LaboLS2N @HorizonEU Based on experiencing building a similar device for Noise Monitoring at Soundsensing back in 2019-21, plus looking at the latest tech, it seems that this is now doable in around a 30 mW envelope including 4G communication. Nordic NRF96 or similar