This is an example of Artificial Intelligence (AI) calculations on a very cheap hardware.

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

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:

• 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!

• GPIO: using the general mqtt main topic for GPIO

• Upgrade digital CNN to v12.0.0 (added new images)

• Update tfmicro to new master (2021-08-07)

• Bug fix: remove text in mqtt value, remove connect limit in wlan reconnet

• NEW 8.0.5: bug fix: saving prevalue
• NEW 8.0.4: bug fix: load config.ini after upgrade
• NEW 8.0.3: bug fix: reboot during config.ini handling, html error
• NEW 8.0.2: saving roundes prevalue, bug fix html server
• NEW 8.0.1: bug fix: html handling of parameter FixedExposure and ImageSize
• Dual / multi meter support (more than 1 number to be recognized) This is implemented with the feature "number" on the ROI definition as well as selected options
• MQTT: standardization of the naming - including new topics (json, freeMem , uptime)c
• Preparation for extended GPIO support (thanks to Zwerk2k) - not tested and fully functional yet
• Bug fixing: html server, memory leak, MQTT connect, hostname, turn of flash LED

ATTENTION: the configuration and prevalue files are modified automatically and will not be backward compatible!

• NEW: 7.1.2: bug fix setting hostname, Flash-LED not off during rebootNEW: 7.1.1: bug fix wlan password with "=" (again)
• MQTT error message: changes "no error", send retain flag
• Update wlan handling to esp-idf 4.1
• Upgrade digital CNN to v8.7.0 (added new images)
• Bug fix: MQTT, WLAN, LED-Controll, GPIO usage, fixed IP, calculation flow rate

• NEW: 7.0.1: bug fix wlan password with "="

• Upgrade digital CNN to v8.5.0 (added new images)

• New MQTT topics: flow rate (units/minute), time stamp (last correct read readout)

• Update MQTT/Error topic to " " in case no error (instead of empty string)

• Portrait or landscape image orientation in rotated image (avoid cropping)

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

• n.a.