Cool project! Following.

@kunall

First these two rows before setup..

int BATTERY_SENSE_PIN = A0;  // select the input pin for the battery sense point
int oldBatteryPcnt = 0;

and in the loop i have these rows...

// get the battery Voltage
int sensorValue = analogRead(BATTERY_SENSE_PIN);
//Serial.println(sensorValue);
// 1M, 470K divider across battery and using internal ADC ref of 1.1V
// Sense point is bypassed with 0.1 uF cap to reduce noise at that point
// ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
// 3.44/1023 = Volts per bit = 0.003363075
float batteryV  = sensorValue * 0.003363075;
int batteryPcnt = sensorValue / 10;
Serial.print("Battery Voltage: ");
Serial.print(batteryV);
Serial.println(" V");
Serial.print("Battery percent: ");
Serial.print(batteryPcnt);
Serial.println(" %");
if (oldBatteryPcnt != batteryPcnt) {
 // Power up radio after sleep
 gw.sendBatteryLevel(batteryPcnt);
 oldBatteryPcnt = batteryPcnt;

in OpenHab items i have this row...

Number node2_batt  "Battery [%.1f %%]" <energy> (node2,All)  {mqtt="<[MySensor:MyMQTT/21/1/V_VAR1:state:default]"}

hope this helps....

Oh! Where do I order?! Been waiting for this!

I've seen these and also got interested. Any input on these is appreciated.

Great work!

Great, thanx! I have to look into this, so tired of the experimentboards

Well, I see some of you creating great custom boards in many (very interesting) sizes and shapes.
But for a n00b in that area... if i would get hold of a gerber/eagle file, how and where do you go about to order them? Is there any "how-to"?

@TommySharp
Hmm dont really remember, but I think this was the solution
https://github.com/knolleary/pubsubclient/issues/46

When you order, lägg till 5st ;)

Where can one find these boards?

Cool!
Perhaps a noob question, but how do you program the Atmega?

I like the formfactor and if the price is right i'd buy a couple (5-10pcs).

It would be cool with a 90degree angled version as well :)

No worries!

Here goes...

This is the ProMini output from the monitor when I turn on and off the relay...

send: 23-23-0-0 s=1,c=1,t=2,pt=2,l=2,st=ok:1
read: 0-0-23 s=1,c=1,t=2,pt=2,l=2:1
This is an ack from gateway
Incoming change for sensor:1, New status: 1
read: 0-0-23 s=1,c=1,t=2,pt=0,l=4:1.6r
Incoming change for sensor:1, New status: 1
send: 23-23-0-0 s=1,c=1,t=2,pt=2,l=2,st=ok:0
read: 0-0-23 s=1,c=1,t=2,pt=2,l=2:0
This is an ack from gateway
Incoming change for sensor:1, New status: 0
read: 0-0-23 s=1,c=1,t=2,pt=0,l=4:0.6r
Incoming change for sensor:1, New status: 0

This what I see on the gateway when I turn on and off the relay....

publish: MyMQTT/23/1/V_LIGHT 1
0;0;3;0;9;send: 0-0-23-23 s=1,c=1,t=2,pt=0,l=4,st=ok:1sor
0;0;3;0;9;read: 23-23-0 s=1,c=1,t=2,pt=2,l=2:0
0;0;3;0;9;send: 0-0-23-23 s=1,c=1,t=2,pt=2,l=2,st=ok:0
publish: MyMQTT/23/1/V_LIGHT 0
0;0;3;0;9;send: 0-0-23-23 s=1,c=1,t=2,pt=0,l=4,st=ok:0sor
0;0;3;0;9;read: 23-23-0 s=1,c=1,t=2,pt=2,l=2:1
0;0;3;0;9;send: 0-0-23-23 s=1,c=1,t=2,pt=2,l=2,st=ok:1

I hope it helps.

I'll get tomorrow. No worries :)

I'm thinking outside the box (shouldn't do that) so here goes...

This would require another type of relay with dual connections.
If you combine the doorsensor with the relay sketch the arduino if "forced" to send activity (V_TRIPPED) from the relay.

Here's a poor painted sketch...

Or something similar... :)

@Gambituk said:

@gadu if you have a setup running, could you publish a message on your mosquitto server just like this?

MyMQTT/25/1/V_LIGHT 1
MyMQTT/25/1/V_LIGHT 0

I don't think it matters if you have any relays connected or defined, it's just to see what value it tries to send to the node... (assuming you have your gateway connected to a pc to be able to see the serial output)?

No problems if this is not possible.

Actually yes, I have a relay sketch that BulldogLowell helped me with in this thread:
http://forum.mysensors.org/topic/901/relaywithbuttonactuator-another-n00b-question/7

The idea behind the sketch is written in the thread, but the short story is that I needed two relays and when the button is pressed one goes on for a sec (then off) and the other goes on until i push the button again. So it's actually only controlling one relay, nothing else.
By publishing...

pi@raspberrypi ~ $ mosquitto_pub -r -t MyMQTT/23/1/V_LIGHT -m "1"
pi@raspberrypi ~ $ mosquitto_pub -r -t MyMQTT/23/1/V_LIGHT -m "0"

I can see the following...

pi@raspberrypi ~ $ mosquitto_sub -v -t MyMQTT/#
MyMQTT/23/1/V_LIGHT 1
MyMQTT/23/1/V_LIGHT 0

Interesting findings, if you find any solution for this in the MQTT gateway I would really appreciate if you post it. I'm about to start implementing relays as well.

(it's actually not my version, I think @ntruchsess is the one who created it) ;)

Wow cool! I'll look into that one!