This is an example of Artificial Intelligence (AI) calculations on a very cheap hardware.
Details on function, installation and configuration can be found on the Wiki Page
A 3d-printable housing can be found here: https://www.thingiverse.com/thing:4573481
or here https://www.thingiverse.com/thing:5028229
respectively ESP32-Cam housing only: https://www.thingiverse.com/thing:4571627
If you would like to support the developer with a cup of coffee you can do that via Paypal.
In other cases you can contact the developer via email: 
- Automated update of the neural network file (tflite) to make the learing of additional pictures much easier and automated (GitHub action)
- New "hyprid" neural network for digital numbers --> allowing the detection of intermediate states ("ring between two numbers") as a subdigit
- slow response of web server during picture analysis
- spontaneous reboots (mostly due to html access during image processing) - self recovery implemented
General remark: Beside the firmware.bin, typically also the content of /html needs to be updated!
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Reduce ESP32 frequency to 160MHz
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Update tflite (new source: https://github.com/espressif/tflite-micro-esp-examples)
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Update analog neural network (ana-s3-q-20220105.tflite)
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Update digital neural network (dig-s1-q-20220102.tflite)
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Increased web-server buffers
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bug fix: compiler compatibility
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NEW v10.0.2: Corrected JSON error
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Updated compiler toolchain to ESP-IDF 4.3
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Removal of memory leak
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Improved error handling during startup (check PSRAM and camera with remark in logfile)
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MQTT: implemented raw value additionally, removal of regex contrain
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Normalized Parameter
MaxRateValueto "change per minute" -
HTML: improved input handling
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Corrected error handling: in case of error the old value, rate, timestamp are not transmitted any more
- Direct JSON access:
http://IP-ADRESS/json - Error message in log file in case camera error during startup
- Upgrade analog CNN to v9.1.0
- Upgrade digital CNN to v13.3.0 (added new images)
- html: support of different ports
- NEW 9.1.1 bug fix: LED implemenetation
- External LEDs: change control mode (resolve bug with more than 2 LEDs)
- Additional info into log file
- Bug fix: decimal shift, html, log file
- Implementation of external illumination to adjust positioning, brightness and color of the illumination now individually
- Technical details can be found in the wiki: https://github.com/jomjol/AI-on-the-edge-device/wiki/External-LED
- New housing published for external LEDs and small clearing: https://www.thingiverse.com/thing:5028229
There are some ideas and feature request, which are not followed currently - mainly due to capacity reasons on side of the developer. They are collected here: FeatureRequest.md