This time I won’t post about my own Domotica adventures, but someone else’s: Menno van Gennip. A few days ago Menno posted on the Domoticaforum about his self-made Remeha Calenta interface. For several reasons, his work just needed to be mentioned here.
First of all, the way Menno improved on the TTL-RS232 converter is beyond my knowledge and absolutely a great improvement. Menno added galvanic isolation to protect the Remeha. Second, he added an Ethernet interface based on a Ethernet-serial Wiznet module:
Third, Menno put all the electronics in a nice enclosure including status LEDs:
Fourth, Menno created 2 Homeseer scripts that makes the whole thing ‘Homeseer-ready’, including CRC checks and all:
The screendump below shows the Homeseer status screen with all the information from the Remeha Calenta (click it for a larger view):
And last but not least, the reason why I like Menno’s effort so much is that this is a very good example of what can be accomplished by sharing knowledge; Menno’s knowledge about electronics combined with my earlier findings about the Remeha Recom protocol resulted in a interface that’s even better than the “real thing”, being the Remeha Recom and the Remeha Interface cable ! (for us Domotica enthusiasts, I mean).