I'm also interested about this: https://github.com/mysensors/MySensors/issues/1424

@ncollins

There's this nice HAT for the Raspberry Pi you might find interesting :) : https://gitlab.com/electronutlabs-public/indrium-pi-hat

On another topic, I would honestly like to see MySensors using OpenThread or BLE Mesh transport...

I have a few of these dongles myself and they're really rather nice. I am too wondering, is there a nice way to use them as a MySensors gateway? Compiling MySensors currently fails for the nRF52840 boards.

I tried flashing MySensors onto my nRF52840 Adafruit Feather board but it fails, I opened an issue on GH about it https://github.com/mysensors/MySensors/issues/1424, maybe someone here has any ideas how to get it running on those boards?

@TRS-80 said in Finally, progress! (evidence based radio testing method):

Perhaps one of you professional angry pixie wranglers out there can verify that there is in fact something to the "two capacitors of different values in parallel" theory?

Two capacitors in parallel lowers the ISR of the capacitance attached to the circuit, meaning it "reacts faster" to the changes in voltage and acts as a better filter. As BearWithBeard said, you can achieve a similar effect by combining electrolytic and ceramic capacitors. If you have a lot of LF and HF noise, that might give you a better result.

@NeverDie I personally took a bottle of nail polish and coated every sensor I had. I had a hunch that moisture seeping might affect the capacitive sensors so I took precautions. They've lasted a year now with no sign of deteriorating.

@Bmlsx Check the configuration defines and/or just post the sketch.

@Bmlsx You're better off taking 2.x.x humidity sensors example. Alternatively, you should check if all the configuration options you're currently using are valid and used.

I have a ton of different sensors :sweat_smile:, just to satisfy my own curiosity:

• 2x MQ-2
• MQ-3
• MQ-4
• MQ-5
• MQ-6
• MQ-7
• MQ-8
• MQ-9
• MQ-135
• GP2Y1010AU0F
• A few DHT11s, DHT22s and a few other temp/moisture sensors I can't recall atm
• A few BMP280's
• MS-1100
• RadiationD-v1.1
• Three dust sensors I can't recall the model of right now, bought them so long ago
• Probably something else I've forgotten right now :smiley:

@cYnd I know, but the lack of proper solder flow (on at least two pins) and a cold joint should not happen even if soldered from the other side. I'd fix it just to be sure it doesn't cause any erratic issues.

@alowhum How's the SDS011, have you had the chance to compare it to other dust sensors?

I was wondering, what types of air quality sensors do people use here, has anyone maybe even calibrated or tested their sensors (e.g. compare performance across different types measuring the same thing)? Any favourites? I'm just curious about what people have and how they use them, maybe I'd like to get one as well :)

I personally have a lot of different sensors, bunch of different MQ-series sensors, four different dust sensors and a few CO2 sensors even.

@Kikakee
I couldn't find one, so I designed my own.

(My model is not suitable for anyone else because I made it fit very snugly around my board)

Wanting a smaller, neater solution than that, I bought a nRF52840 USB stick, hoping I could use that because it's very nice, but unfortunately there are some compatibility issues I have to yet resolve.

@alex28

plug them together with jumper wires and - nothing works' scenario

No not really, because the jumper wires are exactly the thing a pre-made sensor PCB would avoid.

Where you don't need to worry about fake components, etc.

That depends where the person sources the components to populate the PCB, it's up to the individual to decide if they want to take the risk. What would be a better alternative here?

@alex28:

Requiring them to solder SMD components kinda goes against the whole point of it.

Depends on the component though. Most sensors sold by Adafruit, AliExpress and so on, come on boards that have breadboard-compatible pin-headers. Plugging in those isn't hard compared to placing all those things on a perfboard and wiring all that stuff up.

Pretty sure Arduino wrote about their hassles getting an Arduino board with a radio out onto the market, even when using a module it was a hassle.

I'm wondering though, wouldn't it be possible to sell a PCB that allows just plugging in every component?

Ah, I think cussing is warranted here, I copied the radio configuration from my old sketch to the new ones, the node had:

#define RF24_DATARATE RF24_2MBPS

The GW has:

#define MY_RF24_DATARATE RF24_2MBPS

Lesson learned: Never copy configuration from an existing older sketch, you never know what has been deprecated without a warning. MY_RADIO_NRF24 threw a warning and I fixed that, had no idea about RF24_DATARATE and I didn't notice it. :sweat_smile:

@tekka

Just to be clear, the Arduino Mega node (megaNode) can talk to the Arduino Nano gateway (nanoGW), but no Arduino Nano node (nanoNode) can talk to the Arduino Nano gateway.

I'll post the sketches and logs.

Looking at the images, the wires might not be properly connected, a few wires look like they're just plugged in. In that case even the slightest movement could cause issues.

@Yveaux said in Arduino Nanos don't work as nodes:

The MySensors stack doesn't know if it is running on a nano, uno or pro mini, so why are you so certain this is a bug in the stack?
What I do know is that a lot of low quality nanos are available from Chinese sources, with bad ground planes or crappy power regulators.

Because I'm really rather certain it isn't the hardware. You can read what I've replaced, swapped and tried. The radios have been decoupled, the power has been decoupled. The setup works in all possible ways when using RF24.

What nano boards do you use? Could you try a different atmega328 based arduino?

Yeah, I said I tried an Uno and it exhibited pretty much the same symptoms when acting as a regular node.