My Project

@skywatch :sweat_smile:

Few topics before I posted about our wired home automation project based on MySensors: https://forum.mysensors.org/topic/10921/getwired-rs485-mysensors-home-automation-modules Please have a look :) In case of any questions, please feel free to ask me.

I had assumed a pressure cooker would have to be made out of metal, but I see you can buy plastic pressure cookers on Amazon for even just $10. With that you could get the RF out no problem. That makes the whole problem much easier.

I have tried Domoticz, Mozilla WebThings and Home Assistant. So far the best is Home Assistant, it has many integrations and a nice UI. If you want to be able to access it outsite your network I recommend ZeroTier (had many issues trying thru the router).

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!

@Nca78 said in Particle Powered Air Quality Sensor Logging to Google Docs: @Sebex said in Particle Powered Air Quality Sensor Logging to Google Docs: Perhaps I don't necessarily need to use the same pins Both the sensors you quote are using I2C. So they both use the same 2 pins (SDA, SCL) to communicate. You can put many I2C sensors on those same pins, they each have an address to know which sensor is receiving/sending data to the master (here, your arduino). Look for a tutorial on I2C first. Thanks I get it now :smile:

What Chinese are doing with this sensor which is used in a handheld air quality meters like this: https://a.aliexpress.com/_UCY55 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.

Go for it! I don't see why it wouldn't be possible.

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! :D

Hi, I wrote an updated version that uses the standard dht adafruit library. I posted on github site (https://github.com/cnerone/MySensorsArduinoExamples/commit/922cdaaff772db3a59aef8d784d4ef4e43c9a50a) but its pubblication it's still in progress... I run it for one year and it runs very good with no issues...

@trs-80 touch sensors are those: https://www.aliexpress.com/item/32694092023.html It is sensitive enough to detect touch through the decorative plastic plate yes, I am planning to add it to openhardware, just need to dedicate time for that :)

Hahah regarding the alcohol i think thats the problem! I will check everything again with your pointers, thanks for the answer I actually had a second look after i posted and made some changes, i got a lot less errors but still wasnt able to compile. I will have a new pass Thanks

@alex_the_techy I have had an A8 for just over 2 1/2 years now and it has been a relatively good entry level printer. Most of these entry level printers have some quirks about them, but they give you a good start into 3D printing. It does have an acrylic frame which is not quite as sturdy or durable as the aluminum extrusion frame that something like the Ender 3's or the Creality printers have. You can pick up an Ender 3 now for less than $200 US at aliexpress which is right around the same price as an A8. I would go with that over an A8 if I were to buy one these days. Many people that buy the A8 printers end up doing an AM8 frame conversion on them which basically gives you a frame similar to the Ender 3. I am not sure what the cost of the AM8 extrusion parts cost, but whatever the price is, it's too much when you can start out with the Ender 3 for around the same price as buying an A8 and you don't have to go through the hassle of the conversion, which by the way requires some 3D printed parts.

Hey there, I am also in the process of building the same. Getting a lot of help from you. Thanks.

Did you try commenting out #define MY_DEBUG ? That might save you a few bytes.