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## korvo_1.1_assistant.yaml
# https://github.com/espressif/esp-skainet/blob/master/docs/en/hw-reference/esp32/user-guide-esp32-korvo-v1.1.md

# Works:
#  - shows up in HomeAssistant
#  - leds, although flicker sometimes
#  - buttons
#  - wake word, audio sending, audio receive

# Doesn't work:
#  - speaker playback: I2S_MCLK problem

## AliExpress RGBW light bulb AC85
AliExpress RGBW E27 Lightbulb. Marking; AC85-265V 50/60Hz
18W RGB+2700-6500K
- marked 18W
- in reality 18VA, power factor 0.6, so 10W

- works with Tuya app
- board housing part is aluminum
- LED board is aluminum
- casing, easy to open, white silicone
- LED board easy to pry up, on connector

## venv_audit.md

      
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                martin-kokos
                / venv_audit.md
            
            
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              July 5, 2025 14:32
            
              
                Audit python virtual environments
              
          
    Venvs can go stale. Find venvs with old python versions. Using the pyenv.cfg file works across venv, poetry, etc.
$ find ~ -name pyvenv.cfg |xargs grep -h executable |sort | uniq -c
     11 base-executable = /usr/bin/python3.10
     56 base-executable = /usr/bin/python3.11
     26 base-executable = /usr/bin/python3.12
      6 base-executable = /usr/bin/python3.13
      5 base-executable = /usr/bin/python3.9
 1 base-executable = /usr/lib/python-exec/python3.11/python3

  
## opencv_shared_enum_dict.md

      
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                / opencv_shared_enum_dict.md
            
            
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              May 30, 2025 07:25
            
              
                OpenCV shared option enum space
              
          
    OpenCV functions use argument to modify their behavior. These arguments are integers which have special meaning, also called enums. These enums share the same integer space.
You can sometimes see this in the wild and in docs that people use nondescript numbers as options when calling a function (even without keywords) eg. cv2.putText(img, "yolo", (10, 20), 0, 1, (255, 255, 255), 1, 2).
Due to this it is possible to set the wrong option to the wrong funciton and OpenCV he no way to check for this (not that it does much checking).
For example the following example unexpectedly opens the image in grayscale mode because cv2.ROTATE_180 is int(0) and that is interpreted in this function as cv2.IMREAD_GRAYSCALE (sometimes the prefix of the option is not obvious):
img = cv2.imread('myimage.jpg', cv2.ROTATE_180)

(Sometimes, options can be combined by for more "fun" just like bitmasks - by adding them up)

  
## jetson_torch_compatibility_cuda11.txt
  ❌ FAIL: torch=2.1.0 torchvision=0.1.6 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.1.7 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.1.8 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.1.9 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.2.0 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.2.1 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.2.2 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.2.2.post2 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.2.2.post3 (exit=1)
  ❌ FAIL: torch=2.1.0 torchvision=0.9.1 (exit=1)

## mini_metrics.md

      
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                / mini_metrics.md
            
            
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              April 22, 2025 09:09
            
              
                Mini metrics server setup VictoriaMetrics (Datadog-like)
              
          
    This is a very minimal setup how to achieve a minimal metrics server for a small project or an embedded setup.
Install VictoriaMetrics.  https://docs.victoriametrics.com/quick-start/#starting-vm-single-from-a-binary
Install

Essentially:
VM_VERSION="v1.112.0"
wget -O /tmp/victoria-metrics.tar.gz "https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/${VM_VERSION}/victoria-metrics-linux-arm64-${VM_VERSION}.tar.gz"
sudo tar -xvf /tmp/victoria-metrics.tar.gz -C /usr/local/bin
sudo useradd -s /usr/sbin/nologin victoriametrics || true

  
## distcc_ubuntu.md

      
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                / distcc_ubuntu.md
            
            
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              June 1, 2024 09:58
            
              
                Install gcc-14 and distcc on Ubuntu
              
          
    Install gcc
apt install software-properties-common  # installs apt-add-repository
# apt-add-repository ppa:ubuntu-toolchain-r/test
apt-add-repository universe
apt update
apt install gcc-14 g++-14
ll /usr/bin/gcc-14
ll /usr/bin/g++-14
update-alternatives --display gcc


## pythonweekend_task_en.md

      
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                martin-kokos
                / pythonweekend_task_en.md
            
            
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              October 17, 2021 16:43
            
              
                Python weekend entry task
              
          
    Python weekend Kiwi.com - Entry task

By solving this task, you will prove to us and yourself, that you are familiar with the basics of python, in which case we believe that you will enjoy the weekend workshop and it won't be too hard or too boring for you.
Requirements


python-2 or 3 (but you  know the right choice here ;-) )
all modules are allowed

Description


## Webexpo 2019.md

      
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                / Webexpo 2019.md
            
            
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              June 24, 2021 15:37
            
              
                Webexpo 2019
              
          
    Webexpo 2019

Line-up

Recordings (added progressively)
★★★ How to Bullsh*t Your Way To Number 1, Oobah Butler

social engineering,media manipulation

Note: Basically How to Become TripAdvisor’s #1 Fake Restaurant

★★☆ Flixbus about their mobile web


## task_manager.py
'''
If the tasks are inequally sized, it may happen with starmap and similar schedulers
which schedule tasks ahead of time, that some workers are lucky and finish early and some unlucky
and finish much later having the effect of the task batch using all CPU cores at first,
but then lucky workers finishing and core sitting idle.

This task manager serves as an example on how to have workers fetch tasks from a Queue.

Joblib, Pool.starmap or something else might be better, but maybe this is useful.
'''
	# https://github.com/espressif/esp-skainet/blob/master/docs/en/hw-reference/esp32/user-guide-esp32-korvo-v1.1.md

	# Works:
	# - shows up in HomeAssistant
	# - leds, although flicker sometimes
	# - buttons
	# - wake word, audio sending, audio receive

	# Doesn't work:
	# - speaker playback: I2S_MCLK problem
	AliExpress RGBW E27 Lightbulb. Marking; AC85-265V 50/60Hz
	18W RGB+2700-6500K
	- marked 18W
	- in reality 18VA, power factor 0.6, so 10W

	- works with Tuya app
	- board housing part is aluminum
	- LED board is aluminum
	- casing, easy to open, white silicone
	- LED board easy to pry up, on connector
	❌ FAIL: torch=2.1.0 torchvision=0.1.6 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.1.7 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.1.8 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.1.9 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.2.0 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.2.1 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.2.2 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.2.2.post2 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.2.2.post3 (exit=1)
	❌ FAIL: torch=2.1.0 torchvision=0.9.1 (exit=1)
	'''
	If the tasks are inequally sized, it may happen with starmap and similar schedulers
	which schedule tasks ahead of time, that some workers are lucky and finish early and some unlucky
	and finish much later having the effect of the task batch using all CPU cores at first,
	but then lucky workers finishing and core sitting idle.

	This task manager serves as an example on how to have workers fetch tasks from a Queue.

	Joblib, Pool.starmap or something else might be better, but maybe this is useful.
	'''