My Project

Yep, both were 3D printed back then. The Toronto library actually has 3D printers so I built a CAD model and had it printed there. There are also have a lot of web-based companies who will print and ship out parts. Since then I've built my own 3D printer, it comes in handy and they're getting pretty cheap.

Hi, all this is awesome, about the same what I would like to make as I'm heating the house with wood boiler (actually wood gasification boiler to be correct), and accumulation tank. Still working on hot water boiler, but that's not far. For now, I got working Individually DS18b20 node (still with automatic addressing) and one node that reads the temperature in my boilers second burning chamber with a k-type thermocouple but still struggling to get them bout working with one node. It would be very helpful for some guidance or example for this. So my goal is to get 2x thermocouples (additional for smoke temperatures) and some 18b20s in one node + some standard stuff what I am not still sure about. But for now big thanks to mysensors team and community for this. [image: grafiks_zpsbh7fwkge.png]

I need your help pls :/

Wow, welcome and great first post!

@napo7 said in Mysensors "Global" message: Is there a way to broadcast messages ? Hi, @napo7, still have the same question! The only thing that i have done till now is... to send a message to set.Destination(255) that is being handled from gateway as a normal message, but althought is visible to serial output all other nodes, wasn't able to handle it! (do not forget that i am new to this). is there any idea how to retrieve the payload from this kind of "INTERNAL" message?

Great work.

I liked domoticz (was very easy to set up and use). Together with dzVents scripting wasn't that difficult either. But I also had some problem with it lately, so I was actually thinking about switching to openhab (2).

@rborer Thanks

@artipi Yes you can connect a pro mini or an uno. In sleep mode it draws 15ma.

@marceltrapman Haven't had the time to add an ack to the battery request, but the sensor is working just fine. I don't know if it's my home assistant setup or something else causing the battery levels to get lost but I'm sure it's not part of the smoke alarm hack. Since the sensor drain is almost nothing, the battery levels are not moving much. I cant guarantee the pcb layout is the same on newer versions of this smoke alarm..

I use a similar design for a wireless door bell. To not be forced to push the button while the node is booting, I charge a large capacitor when a button is pressed.

I solved it ...was quite easy ... thanks anyway... I'll post the code soon since it is not on web till now..

PIN as Ground http://arduino.stackexchange.com/questions/620/a-digital-i-o-pin-as-ground

Hi, I've a similar project in progress :) but not same cpu, nor tensiometer-like sensors, and i'm doing my custom box.. but this is a nice setup, good work :+1: