General Discussion

Use a sensor such as this. http://www.ebay.co.uk/itm/MPX5700DP-Differential-Air-Pressure-Sensor-Freescale-Arduino-MPX5700D-UK-Stock-/121626002591 There are heaps of similar sensors for measuring pressure ( or lack of )

Thank You.

In the MySensors protocol, messageType is also called command (for historical reasons I guess?). So c made sense, at least when the debug output was added to the code. There is a link available in the description in the debug faq to the code where a comment saying "The command field (message-type) defines the overall properties of a message" is available.

I finally got things working, I think the main problem turned out to be some bad dupont jumpers, I ended up just swapping out all of them and the gateway started working right away, pretty cool stuff.. Looking forward to adding more sensors and other things, just waiting for more stuff to come in the mail.. I decided to try my Uno for the node instead of the Nano so I'm hoping the Nano works as well as the Uno did for my next sensor... I have attached a couple screen shots of how the serial gateway should respond with and without an operating node.. [image: 1458177778475-serial-gateway-response.png] [image: 1458177738278-serial-gateway-dht11-response.png] Thanks!

@Yveaux I'm fortunate enough that my emloyee pays the entrance fee. Members of nljug get a discounts though.

You ask the @Global-Moderators I think.

@trollkarlen could you describe which problem you're trying to solve? There might be other solution than using ack.

@jeylites It should have it's own ID. ID = 0 is reserved for the gateway. There can be only 1 gateway for a specific frequency. If a controller allows several hardware to connect, you can have more then 1 gateway, but tgese should each have their own frequency.

@Dominic-Bonneau Hi! Most examples on the mysensors build pages use components suitable for 5 V which is not optimal for a battery driven device. The most common PIR component can be modified to use 3.3 V though. There are lots of advice for building battery driven sensors in the forum and one page on the mysensors web dedicated to this. Many DIY openhardware build PCBs that specialize in battery power can be found on the openhardware site linked in the forum. But I suggest you follow @mfalkvidd 's advice and don't go for too much or too hard in your first build. Just get your first simple sensor together, and take it from there.

In some countries there are limitations :) That may be a reason. I tried to document it a little bit in the dev branch: https://github.com/mysensors/Arduino/blob/development/libraries/MySensors/MyConfig.h

Yes you can but only with the development version. See http://forum.mysensors.org/topic/2574/how-to-use-the-development-branch-for-sensor-and-gateway/ http://forum.mysensors.org/topic/2794/connect-sensors-directly-to-the-gateway-again/ http://forum.mysensors.org/topic/2122/sensors-without-a-gateway/ http://forum.mysensors.org/topic/1387/sensors-on-gateway/ http://forum.mysensors.org/topic/1338/gateway-and-sensor-node-on-same-arduino-is-it-possible/

@Ironbar yeah I'm in that process now.

Great! Thanks for reporting back :)

@punter9 Thanks for the link, that gave some good background info, and some hope that those of us who are interested in playing with it will eventually be able to get one. (By pure chance, I happened to stumble across it minutes after it was first released, but didn't order one as I didn't have an immediate need, and I already have too many processors which I bought hoping to find a good use for already! Nevertheless I'll probably get one someday.) I wasn't commenting on the quality of the hardware, just on the suitability for our purposes; parts which are only available in quantity one every few months IF YOU ARE LUCKY have some limitations. From the article you linked, perhaps that will eventually change. We'll see. how soon. It's so cheap that if they don't keep limiting the quantities, one customer could buy up the full month's supply for embedding in a commercial product. I'm wondering how it would be useful to us in DIY home automation tho. As a node, I'm not seeing it as a major contender. Let's compare it to an Arduino Pro Mini (under $2 shipped). The minimal RPi zero plus memory, shipping and tax is going to be several times that. The RPi Zero as node takes a lot more power to run and will not power up and down so quickly and gracefully, so it's not going to work well with battery power (and will have a larger passive load on mains power). It tends to require a whole OS which often gets in the way of direct interfacing with hardware, and requires system administering. There aren't as many sensor libraries for it. It has a much faster CPU and far more memory, but for most nodes that's just overkill. I'm not seeing that it would be competitive for most nodes even at the same price as an APM. But there must be some special purpose home automation nodes where it would be useful - any ideas? Of course, it would work as server for some Home Automation Controller software. But you only need one of those, and how much money would it save once fitted out (relative to total system price) compared to using a RPi 3 (with built in WiFi and BLE) or RPi B+ @ $25, or BeagleBone Green? So I'm still wondering what niche it would fill, within our domain... What ideas do people have for making good use of a RPi Zero as a MySensors node, if it was easily available at the nominal price? (Understand, I'll probably eventually get one to play around with because it IS cool, but not necessarily for HA. I also have a $9 C.H.I.P. on order, and a $19 PINE A64, and a RedBear Duo, etc. But those are to feed my addiction, I don't see them as changing the DIY Home Automation landscape).

Seems a bit complicated, and as you say, will increase radio traffic. But do whatever works for you. The project is called MySensors for a reason ;)

Thanks for the quick response. I shall try the option.

No answer for this one?