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Links to related videos:
1) Overview of Eastron SDM120 and SDM220 meters supporting MODBUS RTU protocol: • Эл. счётчики SDM120, SDM220. Часть 1....
2) Video about the MODBUS protocol: • Протокол MODBUS
3) Overview of OLED display on SSD1306: • OLEDдисплей на контроллере SSD1306
4) Resource test of OLED displays on SSD1306: • Ресурсный тест OLEDдисплеев
Additional materials:
1) Manufacturer's website: https://norvi.lk
2) norvi IIOT on the manufacturer's website: https://norvi.lk/industrialesp32nor...
3) norvi controllers on ebay: https://fas.st/5iF6ys
4) Demo sketches for testing norvi IIOT: https://bitbucket.org/nadyrshin_ryu/n...
00:00 Entry
01:14 Case design
03:22 External flaws
05:55 Connecting to the terminals
07:30 Testing inputs, outputs and buttons
10:50 RS485 testing
13:07 Controller disassembly
13:46 Overview of internals
18:43 Conclusions
20:41 Footages