@dbemowsk hi, first off all, very nice job, i read your setup and i like what you did, but im not ready yet to master this c++ like you and i am trying to compile your sketch but i have some faults, with heartbeat interval, and maybe you can show me the way?
Long story short, try 433.55 MHz
I tried for years to received my Chacon Ecowatt 800 (a rebranded Efergy 2 classic) data. I knew the frequency wasn't 433.92 MHz.
I lastly opened transmitter case to find which RF chip was used ... but I didn't get any datasheet for the "A71C03AUF" I found
On last resort, I sought a signal on all "433.92MHz" ISM band (433.05~434.79 MHz, with sdr-sharp). I did find something centered on 433.51 (433.47 and 433.56, FSK?) MHz.
As for Somfy stuff (which uses 433.42 MHz), many generic receiver can't work with those *special" 433MHz frequencies.
In the end, I tested this new frequency using rtl-433 and guess what, there's a working Efergy module ! Moreover, I did not make a great discover, 433.55MHz is well precised in the "efergy_e2_classic.c" module comments...
RFM69 or NRF24L01 may be frequency ajustable!
@mr_red If it's a clone then that would probably explain why it wasn't successful. I've read a thing or two about the BMP. Do you think its a good idea to convert the cheap ST-Link V2 to a BMP? Found a blog about it.
J-Link is way too expensive so I won't even bother considering it. And I don't quite get what you mean but yeah, I did halt it during the process.
I have been researching controlling LEDs and this seems one of the better threads on MySensors with links to all the relevant related projects (this @maghac OP one for analog RGB, @LastSamurai RGBW alternative, @dmonty for digital, @ikkeT and others' improvements, and finally @Jim-de-Groot latest board; sorry if I left anyone out). Thanks to everyone for sharing your work!
So I will ask here a variation of what I I asked @LastSamurai in his thread: Are all of you still using these MySensors based nodes?
Because I initially started thinking to use a MySensors based solution because I thought Wi-Fi based ones (although arguably easier, cheaper) like MagicHome controllers would be "too slow" but @LastSamurai seemed to state that he changed from MySensors because it was "too slow" in responding.
Or maybe the reasons are not speed / response time related? Maybe you guys didn't like that interface? Or maybe they were not as readily and cheaply available back when this post began (may 2017)? Or maybe people just like to tinker (I get it, some times I do too)?
But right now I am thinking about ordering some of those MagicHome devices just to play around with, they are only few dollars each on AliExpress instead of dorking around ordering boards, figuring out correct mosfets to use, implementing software, etc...
What am I missing here?
I am not trying to be contrary! I honestly want to know!
Thanks for this detailed explanation, I will keep that in mind for the next design and plan with capacitors. Currently I have no connectivity troubles in my home (ground floor flat with garden) both inside and outside, but we will see what the situation will be at the end of battery life (PA level high).
I like your project, BTW, a lot of information and experience documented
What Chinese are doing with this sensor which is used in a handheld air quality meters like this:
is this -> Li-Ion battery 3000-4000mAh
This would last hours. Not days.
Unless you want to use a car battery, I do not think there is a portable pm25 monitor able to work days without recharging.