Web Project: IOT Energy Meter ThingSpeak

May 26th, 2017  Posted at   Project ESPresso Lite, Project Web
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IOT Energy Meter adalah projek yang memantau penggunaan tenaga elektrik dalam unit kWh. Selain bacaan tenaga elektrik, terdapat beberapa bacaan lain iaitu voltan, arus, kuasa (power), power factor (pf) dan frekuensi. Bacaan di simpan di dalam ThingSpeak.

Projek ini menggunakan Eastron SDM120 Smart Meter. Meter ini menggunakan interface RS485. Data protocol nya menggunakan Modbus dan nilai bacaan nya di dalam format 32bit IEEE 754. Bacaan IOT Energy Meter boleh dilihat di https://thingspeak.com/channels/277983.

Skematiknya adalah seperti berikut.

PCB komponen layout nya adalah seperti berikut.

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3 Responses to “Web Project: IOT Energy Meter ThingSpeak”

  1. Prabhakar KS says:

    Could you please provide your WhatsApp number or email Id.

  2. Prabhakar KS says:

    I tried using USB to RS485 Converter with PC desktop software.

    Also tried with RS485, Arduino and flowcontrol pin.

  3. Prabhakar KS says:

    I recently purchased sdm120 modbus energy meter from aliexpress.
    But when rs485 is connected to meter then the inbuilt lcd is becoming dim are the sdm120 restarts.

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