💬 Button size radionode with sensors swarm extension

[Koresh]

@miroslav-kadaně
Hello Mirek. All source files are actual, I used exactly the same files to produce latest stable version. I never share source files until I test the board. So I will share updated files (like on the latest screenshot or better) after the board will be checked and tested :wink:
PS
I've added rfm converter board.

[chbla]

With the default sensor and sketch I only get integer values - shouldn't this be decimals with 2 digits after the . ?
Not sure if I have a different lib or missed something

[chbla]

This post is deleted!

[chbla]

What's the typical time you get with the default node, coin cell and the sketch on github?
https://gist.github.com/solars/6116b78ea7ee581ecfafddb8da4a9610

It drained within only 1 day for me

[gohan]

is it sleeping 5 seconds only?

[chbla]

@gohan said in 💬 Button size radionode with sensors swarm extension:

is it sleeping 5 seconds only?

You are right, that was my mistake after testing it. However, the consumption still seems high.
For example I'm right now testing a BME280 which I want to use in the future, with the following sketch:
https://gist.github.com/solars/a5302f1cb60d90f89d7e37d5e23f8c4d

It's connected to SDA/SCL and GND/V - somehow the voltage it receives with a fresh battery is already quite low, and it also doesn't last very long.

[gohan]

you need to try to measure current while the sensor is sleeping as it should be a few uA maximum

[chbla]

@gohan I only have a normal multimeter - what's the best way to do this?
I came across https://www.eevblog.com/projects/ucurrent/ a while ago, is it worth it?

[gohan]

There is a project in openhardware for a current meter if you want to build one, or you could buy a newer multimeter if the one you have can not measure uA

[yury]

@chbla said in 💬 Button size radionode with sensors swarm extension:

multimeter

You should be fine even with a cheap multi-meter as long as it has uA scale.

should be around 7-10 uA and if you do not send JDEC to sleep it is 17 -19 uA.

to send JDEC to sleep\wakeup I use
_flash.wakeup();
_flash.sleep();

light sensor should be sent to sleep explicitly also.

[gohan]

@yury not really, I have bought an Aneng cheap multimeter, but if I connect it with uA scale selected it will go out of range during node boot and cut the circuit making measurement impossible (unless you do something fancy that would make it unpractical)

[yury]

@gohan said in 💬 Button size radionode with sensors swarm extension:

selected it will go out of range during node boot and cut the circuit making measurement impossible

my cheap one survives 20mA surge (RFM69 CW version) of initial communications and displays good reading afterwards. if you burned fuse inside, try replacing it temporarily with some thin wire for this uA tests.

[gohan]

I have another cheap one that works. I didn't blow the fuse since turning it off and on it works again, it must be a software limitation

[chbla]

@yury said in 💬 Button size radionode with sensors swarm extension:

@chbla said in 💬 Button size radionode with sensors swarm extension:

multimeter

You should be fine even with a cheap multi-meter as long as it has uA scale.

should be around 7-10 uA and if you do not send JDEC to sleep it is 17 -19 uA.

to send JDEC to sleep\wakeup I use
_flash.wakeup();
_flash.sleep();

light sensor should be sent to sleep explicitly also.

Right - but this is all in your sketch right? This is what I used:
https://gist.github.com/solars/a5302f1cb60d90f89d7e37d5e23f8c4d

[chbla]

@Koresh would it be possible to sell this without the sensor part and RFM69? How many orders would it need?
I don't have the possibility to produce it myself, don't need the sensors part and have a lot of RFM69s lying around..

Thank you,
Christoph

[anovak]

I downloaded gerber files.
Error Message from PCB Manufacturer:
The NC drill layer does not match with the pads of copper layer.

Thank you,
Attila

[Koresh]

@anovak
Hello. Do you mean main board or rfm69 adapter? It is very strange. I produced exactly these gerbers many time. :thinking_face:

[Koresh]

Finally I have a little time to continue this project...
High efficient dc-dc converter works nice and double cr2032 are good. Lets go to the furher tests! :face_with_cowboy_hat:

[anovak]

Thanks. The problem was solved.
Manufactured at very low cost on pcbway, they are manufactured with "Min Track / Spacing: 5 / 5mil".
Do you have any idea where they are manufactured cheaper?

[Koresh]

New version with double battery holder and power convertor works nice.
Power consumption in sleep mode is less than 9uA :smiley:

I will test it soon..