💬 Button size radionode with sensors swarm extension

[chbla]

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

Maybe a stupid question but how do you connect the FTDI adapter? I only know the ISP pins

Can anyone quickly tell me how to do it correctly? I thought it didn't work but I'm unsure.

[Koresh]

@chbla This board has standard FTDI header (see attached screenshot).

But it also has all of ISP pins (mosi, miso, sck, rst)

[hiddenuser]

@Koresh Might be a dumb question I am planning to work on this board, where do I find the complete part list.

[hiddenuser]

Does any one have links to dirty pcb or OSH Park? Thanks a lot

[NeverDie]

^^^warning: it's an infiltration bot.

[Miroslav Kadaně]

This post is deleted!

[hiddenuser]

@NeverDie Not sure if you are referring to me?

[hiddenuser]

@Miroslav-Kadaně Thanks!!

[hiddenuser]

I do not have an electronics background. I wend through the pdf files and order the parts and looks like I got the wrong resistor and capacitor or wrong part. Looks like I have to wait for an expert to comment let me know which resistor/capacitor goes where what part size. I would love to hear from someone ;)

[Miroslav Kadaně]

@koresh it is possible to buy this adapter (RFM69HCW -> RFM69CW) or download pcb files ?
Thx

[NeverDie]

@miroslav-kadaně said in 💬 Button size radionode with sensors swarm extension:

@koresh it is possible to buy this adapter or download pcb files ?
Thx

Go to this link and press the download button: https://www.openhardware.io/view/299/Button-size-radionode-with-sensors-swarm-extension

[Miroslav Kadaně]

@neverdie thx, but i need adapter from RFM69HCW to RFM69CW

[yury]

Re: 💬 Button size radionode with sensors swarm extension

2 cr2032 winter upgrade - works nice

Keep working at -20 Celsius in a fridge. voltage dropped from 6 Volts to 5V and keeps pretty stable while sending temperature reading every 2 minutes for 2 days now.

[Koresh]

There are so many reasons to use two CR2032 batteries in series with power converter instead of one lager battery like 2450
-CR2032 are much more widespread batteries
-Wider temperature range
-Stable voltage during all battery lifetime (using voltage converter)
-Stable radio power during battery lifetime
-Batteries give less current during transmitting so they are not "shocked" by high current.

So I plan to create version with two CR2032 batteries holder (like on the Yury's photo) and the ultra high efficiency DC-DC converter based on the tps62745 (400 nA quiescent current, 90% efficiency)

:wink:

[NeverDie]

The main problem is finding a button holder that can hold two CR2032's in series. So far I've only found two. One is made by Linx, but it's definitely not ideal:

The other works fine, but it has a larger footprint, so I'm not presently using it. It may work well on your board, though, because your board is square, so you can use the diagonal:


On the other hand, maybe you could bend down the tabs and use it as a through-hole?
I did one where I simply cut-off the tabs and then soldered it to the board. That works, but it leaves me with an uneasy feeling as to how long it might last in that configuration. Maybe it's worth re-visiting.

[yury]

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

worth

uh... apparently, yes. dual dip cr2032 is hard to find item on ali.

[Miroslav Kadaně]

@koresh Hello,
can you please update pcbdoc and schdoc files ?
And add a pcb adapter from RFM69HCW to RFM69CW ?
Thx Mirek

[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!