Remote Sensor


 
Yeah that would work with a RFM12B 915MHz module, but you also need a receiver on the HeaterMeter side and a PCB to mount it on (if you have a v4.2 where the wireless was moved off-board) and a fair amount of expertise because there's only a schematic published for a remote node. If you're willing to take it on, I might have one of the receiver PCBs at home I can send you.
 
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Yes that top module, except in 915MHz flavor. The code only supports setting up a 915MHz transceiver (although you can edit the source to change that). It connects to the 8 pin header on the top of the 4.2 board. You can connect it with wires but I made a simple PCB to mount it on.

The lmremote code doesn't support thermocouple data but can be edited to do so (and transmit the temperature directly in IT+ native format). This can be done, but it requires you get familiar with the source code and be able to program.
 
Bryan Mayland said:
Yes that top module, except in 915MHz flavor. The code only supports setting up a 915MHz transceiver (although you can edit the source to change that). It connects to the 8 pin header on the top of the 4.2 board. You can connect it with wires but I made a simple PCB to mount it on.
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The PCB would be a lot better than wires. The RFM12B is apparently being phased out and the 915MHz models are already getting hard to get. If I got to edit the code I might look at:

http://www.ebay.com/itm/RFM69CW-Hop...e-Footprint-/181249440442?hash=item2a334efaba

It is the replacement for the RFM12B and is the same footprint/pinout but the software is different. Seems to be well documented.

Bryan Mayland said:
The lmremote code doesn't support thermocouple data but can be edited to do so (and transmit the temperature directly in IT+ native format). This can be done, but it requires you get familiar with the source code and be able to program.
Click to expand...

Will see if I can get up to speed on the code. Have written and edited various types of code over the years. The last few years I've been doing mostly sysadmin stuff and have gotten lazy writing mostly shell scripts so will probably have scrape some rust off.

On a side note have you considered porting the Linux portion of this project to Debian or a Debian derivative? Is it at all practical to do so?
 
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I have some RF69s and they're a much better chip for sure, but I am probably not going to change the hardware because of the close to 1,000 active HeaterMeter installs, there are 2 or 3 with RF modules. Two of them are my dad and me, and swapping out the module software means swapping out our hardware which isn't really easy to separate from the HeaterMeter. Also because it would require development time because we use the LaCrosse Weather Station protocol, or some at least the protocol for some of their IT+ modules.

It isn't practical to convert everything to Debian because Debian doesn't have a webui for changing network settings or flashing packages/whole new firmwares that you can integrate into. A raspbian download is also like 2GB compared to 7MB for HeaterMeter. I don't want to have to host giant images of debian with just a 100kb of packages installed on it, and I don't want to have to force people to plug a keyboard and monitor in to do the initial configuration. Especially because it doesn't bring much in the way of features to the project, it just makes it less accessible.
 
Bryan Mayland said:
I have some RF69s and they're a much better chip for sure, but I am probably not going to change the hardware because of the close to 1,000 active HeaterMeter installs, there are 2 or 3 with RF modules. Two of them are my dad and me, and swapping out the module software means swapping out our hardware which isn't really easy to separate from the HeaterMeter. Also because it would require development time because we use the LaCrosse Weather Station protocol, or some at least the protocol for some of their IT+ modules.
Click to expand...

Makes sense. There are still some RFM12B stuff around. I'll just go ahead and pick some up while it is available to keep things simple.

Bryan Mayland said:
It isn't practical to convert everything to Debian because Debian doesn't have a webui for changing network settings or flashing packages/whole new firmwares that you can integrate into. A raspbian download is also like 2GB compared to 7MB for HeaterMeter. I don't want to have to host giant images of debian with just a 100kb of packages installed on it, and I don't want to have to force people to plug a keyboard and monitor in to do the initial configuration. Especially because it doesn't bring much in the way of features to the project, it just makes it less accessible.
Click to expand...

Sounds like you've got the best OS for this project. Was just curious.

I'm restoring an old Barbecue King Revolving Oven and will be building up a HM and LMR for the project. The Barbecue King is an old commercial Rotisserie so the LMR is essential to using food probes.
 
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OK I've just ordered the following:
http://www.ebay.com/itm/18157322083...49&var=480608415889&ssPageName=STRK:MEBIDX:IT

and
http://www.ebay.com/itm/280962251867?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

Is this the compatible the RF interface boards I need? Will be ordering the heatermeter v4.2 and compatible Rasberry Pi from you soon ( have lots of work to do on smoker before I need controls). How do I get the "daughterboard" from you for the heatermeter v4.2 board. Will you have it when I order the rest of the stuff from you or do I need to send you money now to make sure it happens?
 
I completely forgot to check when I got home last night if I still had one. I bought 3 and I know I used 2 for sure, but not sure if I sent the third off to someone else already. I'll check tonight and if I have one I can just throw it in with your order. If not then a batch will have to get made. I don't really need more, but at the same time it actually costs money for OSH Park to make them because they cost so little it doesn't even cover their shipping costs so to be nice to them they really should be bundled with another order. Hopefully I still have one though.

Looks like those two parts are good to go though. One for your lmremote and one for the receiver side.
 
Thanks.

It'll be a few weeks before I need the controls. If you need to piggyback this on another board order just let me know when you get them. I've got lots of work left to do on my smoker. I've also started looking at the code and studying how to program the boards and hack on the code. Looks like this is going to be fun.
 
I looked but forgot to post about it, I do not have any of the RF carrier boards left. I'm not sure when the next time I'll be ordering from OSH Park is, probably inside of a month but hard to tell with my schedule being the way it is.

I've posted the CAM output (Gerbers) RFAddon-1.zip if you want to get them made yourself.
 
I've got several old jeenodes laying around. What does it take to get the rpi software side up and running?
Do I need to recompile anything or change any settings in the rpi or can the lmremote be configured from the web ui?

I already know I'll have to recompile the avr to use ~433MHz band, any other tweaks for the avr code I need to know about?
 
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