InterGasGateway

Arduino (esp8266) Hardware/Software to monitor a Intergas boiler over rs232 interface (x5) of the intergas boiler to Domotica Software with the use of MQTT.

What to expect

This project consists of:

• Hardware -> Cable diagram of between the IntergasGateway and the boiler
• Hardware -> IntergasGateway Schemetic based on KiKad
• Hardware -> IntergasGateway PCB based on KiKad
• Software -> IntergasGateway sketch to be placed on arduino eps8266

Hardware

A few requirements, set by myself, according to the hardware:

• Should be able to run paricitair on the boiler x5 PCB connector (without external power)
• High input RX/TX impedance
• RX/TX gavanically separated
• PCB should fitted in housing
• All parts can be ordered at Aliexpress
• PCb Easy to be ordered
• Easy to build

Software

A few requirements, set by myself, according to the software:

• Code should easy to read and logically setup
• Code should be expandable with ic3 burner
• Code should be based on statemachines
• Good serial debugging possibilities
• Output of retrieved data should be pushed to the serial port
• Output of retrieved data should be pushed to a mqtt listner (domotica software independent)
• Scheduled retrievel of data should be possible
• Reading the serial port should be 

Used tools

• Visual Studio code + platrformIO
• KiCad
• MQTT Explorer
• Python decompiler
• yed

General requirements

• Based on opensource
• Robust
• Well documented
• Low cost
• Components easy to find and easy to order
• Reproducable

Good to know

Intergas has it's own software (IDS) for monitoring the X5 port of the boiler. You can download the original software at this link https://www.intergas-verwarming.nl/zakelijk/download-ids-software/). The only thing you have to do is registrer yourself. The software was extremly usefull during the development of the arduino software.

Help needed

I own a intergas boiler of type ic2 so I was able to develop the arduino parse code for the ic2 telegrams. I want to add and test also the ic3 telegrams therefor I need someone to test for me the arduino code.