AI-on-the-edge-device

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:4571627

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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!

Rolling - (2021-01-19)

• Improvement for wlan password: additionally now "=" is possible in the password or wlan-name

• Reduction of log file info (removal of memory information)

2021-01-18

• New Feature ExtendedResolution uses the after comma digit of the last analog counter to increase precision by one digit. This can only be activated in expert mode.

2021-01-17

• Disabling of digital counters implemented
• Attention: do not disable digital and analog!

• Bug fixing:

  • Configuration of analog counters on html-page failed (enable/disable, undefined ROIs)

2021-01-05

• Configuration: simple enabling / disabling of analog counters

• Alignment Algorithm: implementation of 3 alignment options (AlignmentAlgo)

  • Default = know algo based on 1 channel SAD (square average difference) - using only the red channel
  • Accurate = using all 3 color channels (3x slower)
  • Fast = alignment only on first run, afterward only detection of shift of image by comparing SAD-values
  • Time comparison for reference images with 2 times ~2000 pixel²:
  • Default ~40 s/run, Accurate: 1:40 min/run, Fast: 7 s/run
  • Fast Option allows must faster value updates (up to 2 per Minute)

• Configuration of hostname in config.ini: new parameter hostname in section System

• Switching of GPIO12/13 via http-interface:

  • /GPIO?GPIO=12&Status=high
    /GPIO?GPIO=12&Status=low
    

  • Bug fixing: html configuration page

  • based on Master v6.0.0 (2021-01-02)

  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

  5.0.0 Setup Modus - (2020-12-06)

  • Implementation of initial setup modus for fresh installation

  • Code restructuring (full compatibility between pure ESP-IDF and Platformio w/ espressif)

  4.1.1 Configuration editor - (2020-12-02)

  • Bug fixing: internal improvement of file handling (reduce not responding)

  4.1.0 Configuration editor - (2020-11-30)

  • Implementation of configuration editor (including basic and expert mode)

  • Adjustable time zone to adjust to local time setting (incl. daylight saving time)

  • MQTT: additional topic for error reporting

  • standardized access to current logfile via http://IP-ADRESS/logfileact

  • Update digital CNN to v7.2.0, analog CNN to 6.3.0

  • Bug fixing: truncation error, CheckDigitConsistency & PreValue implementation

  4.0.0 Tflite Core - (2020-11-15)

  • Implementation of rolling log-files

  • Update Tflite-Core to master@20201108 (v2.4)

  • Bug-fixing for reducing reboots

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

  • Update digital CNN to v6.5.0 and HTML (Info to hostname, IP, ssid)

  • New implementation of "checkDigitConsistency" also for digits

  • MQTT-Adapter: user and password for sign in MQTT-Broker

  3.0.0 MQTT-Client (2020-10-14)

  • Implementation of MQTT Client
  • Improved Version Control
  • bug-fixing

  2.2.1 Version Control (2020-09-27)

  • Bug-Fixing (hostname in wlan.ini and error handling inside flow)
    

  2.2.0 Version Control (2020-09-27)

  • Integrated automated versioning system (menu: SYSTEM --> INFO)
  • Update Build-System to PlatformIO - Espressif 32 v2.0.0 (ESP-IDF 4.1)

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

  • Implementation of Decimal Shift

  • Update default CNN for digits to v6.4.0

  • Improvement HTML

  • Support for Chrome and Edge

  • Reduce logging to minimum - extended logging on demand

  • Implementation of hostname in wlan.ini (hostname = "HOSTNAME")

  • Bug fixing, code corrections

  2.0.0 Layout update (2020-09-12)

  • Update to new and modern layout
  • Support for Chrome improved
  • Improved robustness: improved error handling in auto flow reduces spontaneous reboots
  • File server: Option for "DELETE ALL"
  • WLan: support of spaces in SSID and password
  • Reference Image: Option for mirror image, option for image update on the fly
  • additional parameter in wasserzaehler.html?noerror=true to suppress an potential error message
  • bug fixing

  1.1.3 (2020-09-09)

  • Bug in configuration of analog ROIs corrected - correction in v.1.0.2 did not work properly
  • Improved update page for the web server (/html can be updated via a zip-file, which is provided in /firmware/html.zip)
  • Improved Chrome support

  1.1.0 (2020-09-06)

  • Implementation of "delete complete directory" Attention: beside the firmware.bin, also the content of /html needs to be updated!

  1.0.2 (2020-09-06)

  • Bug in configuration of analog ROIs corrected
  • minor bug correction

  1.0.1 (2020-09-05)

  • preValue.ini Bug corrected
  • minor bug correction

  1.0.0 (2020-09-04)

  • First usable version - compatible to previous project (https://github.com/jomjol/water-meter-system-complete)
  • NEW:
  • no docker container for CNN calculation necessary
  • web based configuration editor on board

  0.1.0 (2020-08-07)

  • Initial Version

  Full Changelog

  Solved topics

  • n.a.