AI-on-the-edge-device

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

respectively ESP32-Cam housing only: https://www.thingiverse.com/thing:4571627

Donate

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If you would like to support the developer with a cup of coffee you can do that via Paypal.

If you have any technical topics, you can file a issue in this repository.

In other cases you can contact the developer via email:

Change log

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Known Issues

• slow response of web server during picture analysis
• spontaneous reboots (mostly due to html access during image processing) - self recovery implemented

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General remark: Beside the firmware.bin, typically also the content of /html needs to be updated!

6.7.2 Image Processing in Memory - (2021-01-05)

• NEW 6.7.2: Updated html for setup modus - remove reboot on edit configuration)

• NEW 6.7.1: Improved stability of camera (back to v6.6.1) - remove black strips and areas

• Upgrade digital CNN to v8.3.0 (added new type of digits)

• Internal update: TFlite (v2.5), esp32cam, startup sequence

• Rollback to espressif v2.1.0, as v3.2.0 shows unstable reboot

• Bugfix: WLan-passwords, reset of hostname

6.6.1 Image Processing in Memory - (2021-04-05)

• NEW 6.6.1: failed SD card initialization indicated by fast blinking LED at startup
• Improved SD-card handling (increase compatibility with more type of cards)

6.5.0 Image Processing in Memory - (2021-03-25)

• Upgrade digital CNN to v8.2.0 (added new type of digits)
• Supporting alignment structures in ROI definition
• Bug fixing: definition of hostname in config.ini

6.4.0 Image Processing in Memory - (2021-03-20)

• Additional alignment marks for settings the ROIs (analog and digit)
• Upgrade analog CNN to v7.0.0 (added new type of pointer)

6.3.1 Image Processing in Memory - (2021-03-16)

• NEW: 6.3.1: bug fixing in initial edit reference image and config.ini (Spelling error in InitialRotate)
• Initial setup mode: bug fixing, error correction
• Bug-fixing

6.2.2 Image Processing in Memory - (2021-03-10)

• NEW 6.2.2: bug fixing

• NEW 6.2.1: Changed brightness and contrast to default if not enabled (resolves to bright images)

• Determination of fixed illumination settings during startup - speed up of 5s in each run

• Update digital CNN to v8.1.1 (additional digital images trained)

• Extended error message in MQTT error message

• Image brightness is now adjustable

• Bug fixing: minor topics

6.1.0 Image Processing in Memory - (2021-01-20)

• Disabling of analog / digital counters in configuration
• Improved Alignment Algorithm (AlignmentAlgo = Default, Accurate , Fast)
• Analog counters: ExtendedResolution (last digit is extended by sub comma value of CNN)
• config.ini: additional parameter hostname (additional to wlan.ini)
• Switching of GPIO12/13 via http-interface: /GPIO?GPIO=12&Status=high/low
• Bug fixing: html configuration page, wlan password ("=" now possible)

6.0.0 Image Processing in Memory - (2021-01-02)

• Major change: image processing fully in memory - no need of SD card buffer anymore

  • Need to limit camera resolution to VGA (due to memory limits)

• MQTT: Last Will Testament (LWT) implemented: "connection lost" in case of connection lost to TopicError

• Disabled CheckDigitIncreaseConsistency in default configuration - must now be explicit enabled if needed

• Update digital CNN to v7.2.1 (additional digital images trained)

• Setting of arbitrary time server in config.ini

• Option for fixed IP-, DNS-Settings in wlan.ini

• Increased stability (internal image and camera handling)

• Bug fixing: edit digits, handling PreValue, html-bugs

Additional ideas

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

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History

5.0.0 Setup Modus - (2020-12-06)

4.1.1 Configuration editor - (2020-12-02)

4.0.0 Tflite Core - (2020-11-15)

3.1.0 MQTT-Client - (2020-10-26)

2.2.1 Version Control - (2020-09-27)

2.1.0 Decimal Shift, Chrome & Edge - (2020-09-25)

2.0.0 Layout update - (2020-09-12)

1.1.3 Initial Version - (2020-09-09)

Full Changelog

Solved topics

• n.a.