General Discussion

What if my neighbour also discovers this site and starts to build a network? Like @tbowmo indicated you can select another channel. If you are worried about your neighbor controlling your lamps or listening to your messages, have a look at http://forum.mysensors.org/topic/9/security

for a standard 220V appliance cord with 0.75mm2 (square mm) you have a resistance of 1 ohm for each 43m for 20 feet (6.1 meters), the resistance is 0.142 ohm, with 5A load, you have a drop of 0.7V.. for 8 feet (2.5m) the resistance is 0.06ohm, again with 5A load, you have a drop of 0.3V So only 0.4V in difference... / Thomas

@dzairo Can't help you with the project as it's way over my pay grade, but it sounds interesting. Good Luck!

Well I decided not to try the multiple gateway method. Too many opportunities for me to screw something up. I decided to work on the code ahead of time and convert all sensors in a weekend. For the most part it was very smooth. I had two nodes that wouldn't communicate with the gateway then I figured out that they were trying to communicate with a node that I had inadvertently made into a relay node. Once I cleared Eeprom and re-uploaded the code they found the gateway and worked great. One node I still haven't figured out. It will update all sensors (I have a barometer, DHT22 and moisture sensor connected) but it stops after the first time. I haven't had time to try to debug but it was working fine in v1.3. I'll post back when I finally get it figured out in case it helps anyone else who still needs to upgrade.

@C.r.a.z.y. yes, connect the 6V battery to the RAW pin, not Vcc...

I can nothing say about OpenHAB or PiDome but: Started! 0;0;3;0;9;read: 0-0-0 s=0,c=0,t=0,pt=0,l=0: 0;0;3;0;9;version mismatch 0;0;3;0;9;read: 0-0-0 s=0,c=0,t=0,pt=0,l=0: 0;0;3;0;9;version mismatch Does not look good, it seems an error from the gateway.

I think that: It does overlap with MySensors for the wireless network. MQTT-SN assumes a network that provides a bi-directional data transfer service between any node and a particular one (a gateway). MySensors wireless network could provide data transfer but the message are really tailored to transport sensor and actuator values. MQTT-SN for the gateway - controller interface is not needed MQTT is for that more than fine That said I like the idea of MQTT-SN but for it a "transparent network" makes more sense.

yeah , I will test it .. thanks . If button change then send packet with ACK , and wait .. if not ack received then error .. rebards

yes ....

@brad.s The transceivers communicate via RF via an embedded hardware protocol. The micro-controller communicates with the transceiver module using (standard) serial communication. Good radio communication and buffering of incoming or outgoing messages are more-or-less unaffected by clock speed of the micro-controller. So, it is not necessary to match clock speeds. The clock speed may affect energy consumption so you will want to optimize your arduino model for its sensor application and choice of using battery or mains power. Also, your choice of 5V or 3V3 IO will affect your sensor build strategy, having to power up or down to accommodate the IO requirements of the attached devices (e.g. radio transceiver 3.3V or a pressure sensor at 5V). Available SRAM/FLASH memory is also a factor, if you want to get into more complex devices later on.

@Nicola-Reina Let me know how things go, and if you could use any help. I am sure I could spare some time for it.

@bjornhallberg Have a look at this http://ing.dk/blog/hvilken-elmaaler-har-du-120890#p391493 There is a schematic of a IR head for the kamstrup meters. Might be usefull for your meter as well.. If you're up to reading danish, there are a couple of sites where the author of that blog deciphers the kamstrup protocol.. like this one http://ing.dk/blog/kamstrup-meter-protocol-127052

Thanks kalle! Yes. Could not find it for. Days ...

@Avenger If you run e.g. an MQTT broker or a domotica server (like OpenHab) it is possible to store sensor data and have it retrieved by actuators (e.g. a display) on request. Did you consider such a setup?

mmm.. Ok - thanks Hek. I was doing similar by having multiple copies of the Arduino IDE - one with 1.3 libs and another with 1.4 but ive recently started using AtmelStudio with VisualMicro plugin. I wonder if i can change within there without restarting the IDE completely...

You are very welcome of course. There are more suppliers but this one sells many many types, price is ok, quality is very good and shipment rocks :)

I think that unless you want to transfer a lot of power, Ethernet cables, Cat 5/6 are the best choice. I am wondering if this is the right forum though, MySensors is more about wireless communication.

@marceltrapman, using a smart and nice etching process is never something people have an issue with. The point people are trying to make on this thread is that if you can achieve the same results by using a small tank and an inexpensive chemical, why go for an expensive process. There are so many different etching processes available that you can choose from which are cheap enough to be used by anyone. Etching does impact the quality of a PCB but as long as you’re not making expensive antenna PCBs, usual process work fine. electronics assembly