@hepal
Hi The thermostats use mysensors serial gateway to communicate with the openhab that runs on a raspberry Pi 2. I run openhab 2.0 but in the beginning i was running 1.7.x

The project does not work without neutral wire

No i have not tested any minimum loads at the moment, this is one of the next steps

HI @dexterbot
Here is the code for the openhab

Items
/* Thermostats /
/ Hall */
Number Hallway_Temperature "Temperature [%.1f]" <temperature> (Temperature, C_Hallway, gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_Temperature:temp" }
Number Hallway_SetPoint "HVAC/Heater set point " <temperature> (gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_SetPoint:hvac-setPoint-heat" }
String Hallway_FlowState "Mode of heater [%s]" <heating> (gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_FlowState:hvac-flow-state" }
Number Hallway_KnobTempVar1 "Knob temperature [%.1f]" <temperature> (gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_KnobTempVar1:var1" }
String Hallway_FlowMode "Running mode" <heating> (gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_FlowMode:hvac-flow-mode" }
Number Hallway_HystLowVar3 "hyst low [%.1f]" <temperature> (gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_HystLowVar3:var3" }
Number Hallway_HystHighVar4 "hyst high [%.1f]" <temperature> (gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_HystHighVar4:var4" }
Number Hallway_UpdateTimeVar5 "update time (s) [%d s]" <clock> (gMS) { channel="mysensors:hvacThermostat:gateway:Hallway_UpdateTimeVar5:var5" }

Things
Bridge mysensors:bridge-ser:gateway [ serialPort="/dev/ttyUSB0", sendDelay=200, baudRate=115200, skipStartupCheck=true ] {
/** define things connected to that bridge here */
hvacThermostat Hallway_Temperature [nodeId="59", childId="0"]
hvacThermostat Hallway_SetPoint [nodeId="59", childId="0"]
hvacThermostat Hallway_FlowState [nodeId="59", childId="0"]
hvacThermostat Hallway_KnobTempVar1 [nodeId="59", childId="0"]
hvacThermostat Hallway_FlowMode [nodeId="59", childId="0"]
hvacThermostat Hallway_HystLowVar3 [nodeId="59", childId="0"]
hvacThermostat Hallway_HystHighVar4 [nodeId="59", childId="0"]
hvacThermostat Hallway_UpdateTimeVar5 [nodeId="59", childId="0"]
}
sitemap
Group label="Thermostats" icon="heating"{
Frame label="Hall"{
Text item=Hallway_Temperature
Text item=Hallway_FlowState label="State [%s]"
Setpoint item=Hallway_SetPoint label="Set point [%.1f]" icon="temperature" minValue="0.0" maxValue="32.0" step="0.1"
Text item=Hallway_KnobTempVar1 label="Knob temperature" //Knob temperature
Text item=Hallway_FlowMode //Running mode
Setpoint item=Hallway_HystLowVar3 label="Hysteresis L [%.1f]" minValue="0.0" maxValue="5.0" step="0.1"
Setpoint item=Hallway_HystHighVar4 label="Hysteresis H [%.1f]" minValue="0.0" maxValue="5.0" step="0.1"
Setpoint item=Hallway_UpdateTimeVar5 label="Update time (s) [%d]" minValue="1" maxValue="4096" step="1"
}
}

Hi Tomas
I have only replaced the thermostats not anything else in the system.
This thermostat is a replacement of my Cosy thermostat (art no 804661), but i think it should work also for the following article numbers (80466, 80465, 804651 and 80464). This thermostat only works as a on/off for the valve, I did not spend any time on the night temp function. I have connected the thermostat to a transformer unit (art no 80460) which in principle only converts 220 v to 24 V which is then connected to the thermostat. When the thermostat turns on it passes on the ~24 V signal to the valve.

I will upload a schematic to the project

Hi all
I have a problem when my raspberry pi and mysensors/openhab when i do a restart. The problems seems to be ralated to the serial gateway and that the openhab dont find it or has the wrong settings.

Openhab starts when i make a reboot

I checked the serial by typing
stty -F /dev/ttyUSB0
response was

Seems here that the baudrate is wrong as my settings in the things file is

What i did to make it work was just to change this to use baud 9600 and then back to baud = 115200
after this it looked like

And everything started to work nicely

Does anyone now what the cause of this is and also how to fix it?

And now everything is connected together.
I had to change some values on the resistors.
R6 = 10k and C4 = 10 nF gives 2.5 seconds ON time. I also changed the sensitivity from 4 s to 0.05 Seconds, I am considering changing this a bit to some greater value to increase the time some.

I also need to do some changes to the Arduino board as the on led is always on and i think i should remove the regulator to save some more power.

Just for the fun off it i bought a Biltema presence controlled LED lamp for 79 SEK ~9$ having in mind that i should be able to use the nice box and interior to build myself a "cheap" motion detector to add to mySensors project.
http://www.biltema.se/sv/Bygg/Belysning-och-lampor/LED/Narvarostyrd-minilampa-2000033627/

I started by opening the lid and remove the board. This was a little troublesome as i had to compress the battery connector to get it out of its position, but i managed.
After that i tested different ways of how to fit in the Arduion mini and the RF in to the box. Unfortunatly i could not get it in without making the PIR sensor board smaller. I just cut down the board at the near the GND connector.

After this i had cut off the VCC and the motion output so i had to fix that by soldering wires for VCC and motion output shown below. connected pin1 and 8 fixin the VCC. and solderded the Via hole to the testpoint to fix the motion output from pin 2. Also i needed to cut the track just right of C3 to disable the fotoresistor so that the sensor work also in daylight.

I assembled back the board. Also you will need to replace the LED with a 10k ohm resistor (to reduce the current when activating) and then connect the Arduino sensor input to the R3 right side. This should give an active low trigger pulse.

And then i placed the component as i see that they should fit.

Now comes the next step to wire the R Fboard to the Arduino and then connect the motion output to the input of the Arduino.
There might be some changes needed for setting up the right length of the pulses on the motion detector. I have to investigate which of the R's and C's just right to the detector that does this.

This is as how far i came today.

Hopefully this will be one of those projects i finish.

I will make updates on the progress

@Denke
I cant find V_PRESSURE connected to CHANNEL_BARO below, can that be the reason?

Hi
Is there anybody that have had a problem with the S_BARO and the V_PRESSURE channel?

I try to send a value on this channel as 1.2 I can see that the serial gateway receives it

23:10:51.808 [DEBUG] [g.mysensors.protocol.MySensorsReader] - 0;0;3;0;9;read: 163-163-0 s=10,c=1,t=4,pt=7,l=5,sg=0:1.2

I set up the channel as i have done for alot of other channels through the paper ui. where i link the channel to an item.

The item file looks like this
String Pool_Pressure "Pressure [%s]" <pressure> (gPool)

the sitemap file looks like this
Text item=Pool_Pressure

result is this

The field never gets updated.
any suggestions?