https://github.com/hagronnestad/mbus-han-kaifa

⚡🔌💻 DIY electronics and code to read data from my KAIFA MA105H2E AMS smart meter.
https://github.com/hagronnestad/mbus-han-kaifa

ams arduino electronics han han-kaifa iot m-bus mbus smart-meter

Last synced: 15 days ago
JSON representation

⚡🔌💻 DIY electronics and code to read data from my KAIFA MA105H2E AMS smart meter.

• Host: GitHub
• URL: https://github.com/hagronnestad/mbus-han-kaifa
• Owner: hagronnestad
• License: mit
• Created: 2018-09-22T23:17:39.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2022-03-13T23:10:37.000Z (over 2 years ago)
• Last Synced: 2024-10-04T17:25:43.102Z (about 1 month ago)
• Topics: ams, arduino, electronics, han, han-kaifa, iot, m-bus, mbus, smart-meter
• Language: C#
• Homepage:
• Size: 2.08 MB
• Stars: 10
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

Awesome Lists containing this project

README

        
# mbus-han-kaifa

DIY electronics and code to read data from my KAIFA MA105H2E electricity meter.

## Code

This library aims to read and decode all packet types from the Norwegian M-Bus smart electricity meters. The screenshot below shows a test application outputting data from the various packet types. Not all packet types have been implemented yet.

![](Screenshots/01.png)

## Electronics

### Simple Circuit Diagram - Arduino Analog Input -> TTL

This circuit uses a simple voltage divider and an Arduino to convert the resulting 2.2V-3.3V signal to a 5V TTL signal.

![](Electronics/mbus-han-kaifa-simple-circuit.png)

### Arduino Sketch

[Electronics/Arduino/A0_to_TTL/A0_to_TTL.ino](Electronics/Arduino/A0_to_TTL/A0_to_TTL.ino)

Threshold value needs to be tuned based on the voltage divider. Write `val` to serial to find the min and max value and choose a fitting threshold.

```arduino

void setup()

{

  pinMode(12, OUTPUT);

}

int val = 0;

void loop()

{

  val = analogRead(0);

  digitalWrite(12, val > 400);

}

```