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22 lines
1.5 KiB
Markdown
22 lines
1.5 KiB
Markdown
# Best Practice
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This page shows some best practices:
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## Camera Placement
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* Move the Camera as close as possible(~4cm), this will help get rid of reflections.
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-> focus can be adjusted by turning the outer black ring of the camera.
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* If the LED reflections are too strong, put tape over the LED to defuse the light
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* Change the ImageSize to QVGA under "Expert mode" configuration when close enough, this will be faster and is often good enough for digital recognition.
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## Reflections
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* Try to get ride of the reflections by rotating the camera, so that the reflections are at positions, where no number is.
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* By using the external LED option, you can place WS2812 LEDs freely away from the main axis.
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* Users report, that a handy cover foil could also help
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## Post-processing
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* Filter out the Number "9", as "3" will often be misread for a "9" and void every number between 3 and 9 due to it being negative flow.
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* Split the readings into two, while the decimal numbers might move to fast to be recognized, at least the slower moving part will produce a correct reading.
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-> keep in mind that the offset needs to be adjusted, a.e if you have a comma reading of "3", it needs to become "0.3". This can be done wherever the data ends up being sent, like home assistant using sensor templates.
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* If you are using a low resolution and only digital mode, processing can often be done in <1 minute. Check the logs to confirm how fast it is and then set the interval accordingly under "Expert mode" in configuration, as the normal mode will lock you to 3+ minutes.
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