@pepson said in Door, Window and Push-button Sensor:

@skywatch
Yes but i dont know how do it....
I dont know programing.

Not an excuse, it's time for you to learn

@gohan said in Multimeter recommendation?:

Aneng an8009 or similar is still a really good buy, 9999 counts is not something you get usually from cheap meters

I bought one and I don't suggest to buy it for MySensors projects.
Plugs for mA and uA are separated, and it makes it a pain to measure current consumption in battery powered nodes, you have to unplug/replug the wire to change scale between the 2 modes. When node is sleeping and you are in mA modes you don't see anything. When you are in uA and node is waking up it doesn't have enough current going through the multimeter and it resets.

@waspie why do you want to use this script with NRf52 ?
GPIOTE is useful with nrf51 only because it has a hardware bug that makes it use 100uA with "normal" interrupt.
With NRF52 the sleep code from MySensors should run fine.

@benhub if you look at the datasheet of the MX4466 you can see that it's input current is a bit above 24µA which is ok for battery usage.
But you have to include the current consumption of the microphone also, the one used only has a max value of 0.5mA @3V in the datasheet, so you can't make it a battery powered sensor with a very long battery life.

@skywatch said in Sketch for Lightning Sensor:

@neverdie Last night was the first lightning to test it out - 3 storm cells went through with hail and lightning, but nothing from the sensor

So today I have rewired it, made some changes to the program and if we get lightning tonight I might have some news

I have the same problem. Insane storms, and nothing from the sensor, the bast I had were events identified as noise. I've had storms around and sensor doesn't detect anything, very disappointing.
I've tried to disconnect my laptop from main so it's not grounded (seem it can be a problem) but I still had nothing.

@manutremo said in VEML6075 high sleep consumption:

when it should be less than 1 uA according to the datasheet.

Datasheet says it's at 1.8V, and "Light condition = dark;". Have you tried to cover the sensor with opaque tape to check the sleep current ?
Is the forced mode activated ?

@bjacobse said in Raspberry Pi3 alternative?:

@nca78
I think you must have misunderstood the concept. I did not use a ethernet splitter and extra cable mess...
I use my router as IP supplier, 1 ethernet cable to my RPI, so I have cable to my domoticz, the RPI gets IP via cable, and if the I'm not able to ping gateway (router) then there is no power as the gateway is down.
the ONLY extra thing I have purchased is a the powerbank

Indeed I misunderstood, it makes much more sense like that

@zboblamont said in Raspberry Pi3 alternative?:

Perhaps French, German and Dutch supplies are more reliable, but here in Romania, "Vorsprung durch fuckup" prevails

Same here in Vietnam... That's why I'll also have a wifi gateway with battery backup soon.

@bjacobse said in Raspberry Pi3 alternative?:

@nca78 said in Raspberry Pi3 alternative?:

Do you also use the ethernet switch as a power sensor ? I would just use an USB splitter before the powerbank, then use one wire and a voltage divider to connect it directly to a GPIO...

There are typically many paths to same solution
It was easiest for me to just copy exact same setup - why should I bother to purchase an USB splitter and spend time to setup a voltage divider and create a script that needed to measure voltage on a GPIO

It's just that it looks like a serious overkill and cable mess to use an ethernet splitter + it's own supply + ethernet cable when it can be done with less than 1$ of hardware and only one splitter + one spare usb cable. But that's just my own opinion

And if you want to really go for cheap and easy solution the raspi ups hat (blue PCB like in the link below) works like a charm. Compact, efficient, no extra cable. And I think the price is even cheaper than powerbank + splitter.
https://www.aliexpress.com/item/32882666003.html

UPS HAT Board Module 2500mAh Lithium Battery For Raspberry Pi 3 Model B/Pi 2B/B+/A+ Z25 Drop ship

$14.16

@skywatch said in Suitable long-term sensors for PM, Ozone and NO2:

@nca78 Thanks for the explaination - Now I understand that you require precision measurements whereas I just needed to know when the dust levels were rising in order to clean the room!

Maybe in the future I'll go down another path, but for the time being I have more urgent nodes to make.

Yes if you just need a dusty/not dusty detection, it will do the job.
But you might breathe polluted air regularly and not know it. I live in a big city of a developing country and I need to be aware of what my family breathes.

@alowhum said in Raspberry Pi3 alternative?:

for about 15 minutes.

Haha don't move to Vietnam, here when they cut power it can last half a day.

@bjacobse said in Raspberry Pi3 alternative?:

I use a RPI3 and use this UPS (powerbank + script), as it's cheap and useful
http://raspi-ups.appspot.com/en/index.jsp

Do you also use the ethernet switch as a power sensor ? I would just use an USB splitter before the powerbank, then use one wire and a voltage divider to connect it directly to a GPIO...