💬 Button size radionode with sensors swarm extension

[alexsh1]

@yury I suggest we use this:

http://oregonembedded.com/batterycalc.htm

Based on non-LDO board consumption of 18uA the battery life assuming constant updates 10 mins and 140ms wake-up time (120ms is needed by bh1750) is 1.03 years. Excellent

[yury]

@alexsh1 said in 💬 Button size radionode with sensors swarm extension:

Did you test power consumption of modules with Si1132 please? I hope it was a bad soldering on my side

Could not find good code to send it to sleep. without it Si1132 was eating a lot...

[alexsh1]

@yury Hmmmm. Datasheet is stating that the standby current < 500 nA

However, actively measuring current - 4.5mA
This would kill 2032 very quickly

[alexsh1]

@Koresh another alternative would be using Si1145 it is pin-for-pin compatible with Si1132 and

This low-power sensing family enables long battery life with standby less than 500 nA and an average power of as little as 1.2 uA with once per second real-time UV Index measurements.

However, I still think that Si1132 can be working with the battery nicely. 0x18 register is a key:

The COMMAND Register is the primary mailbox register into the internal sequencer. Writing to the COMMAND register is the only I2C operation that wakes the device from standby mode.

The only question is how to put the sensor into the standby mode after all measurements are taken

[Nca78]

@alexsh1 said in 💬 Button size radionode with sensors swarm extension:

However, actively measuring current - 4.5mA
This would kill 2032 very quickly

Matter of hours I guess, it's half more than the max continuous discharge current of a CR2032.

[alexsh1]

@Nca78 said in 💬 Button size radionode with sensors swarm extension:

@alexsh1 said in 💬 Button size radionode with sensors swarm extension:

However, actively measuring current - 4.5mA
This would kill 2032 very quickly

Matter of hours I guess, it's half more than the max continuous discharge current of a CR2032.

It is 4.mA for 120ms for less just for measurements
However, I agree that this is not very battery friendly

[Nca78]

@alexsh1 said in 💬 Button size radionode with sensors swarm extension:

@Nca78 said in 💬 Button size radionode with sensors swarm extension:

@alexsh1 said in 💬 Button size radionode with sensors swarm extension:

However, actively measuring current - 4.5mA
This would kill 2032 very quickly

Matter of hours I guess, it's half more than the max continuous discharge current of a CR2032.

It is 4.mA for 120ms for less just for measurements
However, I agree that this is not very battery friendly

Ah ok I completely misunderstood :D But yes seems high for a CR2032 sensor...

[Terrence]

This post is deleted!

[Abdu Sahin]

@Koresh,
I tried to buy some of these on the link you provided, but couldn't do it. Do you still have this component in your stock ? I like to buy 865mhz HW/W versions.

[yury]

@Abdu-Sahin said in 💬 Button size radionode with sensors swarm extension:

865mhz HW/

Hi

They will be ready end of this week. do you need both HCW and CW versions?

[Abdu Sahin]

@yury
I like to try both 865 HW/W versions. I need sensors with long battery life and good RF distance coverage for my project. I've noticed some people suggested using only 'W' version for battery powered nodes, but from my initial experience I didn't have good distance with 'W' version.

[yury]

@Abdu-Sahin said in 💬 Button size radionode with sensors swarm extension:

I need sensors with long battery life and good RF distance coverage

)) either good battery life or good coverage though... or good coverage and 2-3 AA batteries. CW is 20 mA when sending signal and HCW is about 100 mA. CR2032 battery will be drained by HCW pretty fast.
HW/W versions have bigger footprints (Module Size:19.7X16mm) and not compatible with the "Button size".
HCW/CW (Module Size:16X16mm) are equivalents for HW/W.

[Abdu Sahin]

@yury
I think I can start with CW version as start. Battery life is important for me.

[yury]

@Abdu-Sahin said in 💬 Button size radionode with sensors swarm extension:

Battery life is important

sent you a message in the chat...

[Abdu Sahin]

@yury
You can email me if you like.
My email is uk.asahin at gmail com

[Terrence]

@Abdu-Sahin I was interested in reading your conversation about battery life etc. I hope you will continue the conversation on the forum instead of in private.

Thanks.

[Miroslav Kadaně]

It is possible to buy only PCB ? Upload PCB to OSH Park, or send PCB in eagle. I do not have Altium Designer... Thx

[Koresh]

@Miroslav-Kadaně I've just uploaded latest gerbers (rfm reset pin was connected to controller, connection of si1132 was fixed, reverse battery polarity protection was added). You can place PCB order at any factory. :wink:

[chbla]

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

[getlarge]

@yury @koresh

Few months ago, I've ordered some of your nodes, which work perfectly by the way, but I needed something that could speed up testing of any sensors.
So following our conversation on Github with Yury, I've created a PCB based on your Button size node, with a field for an extension board. The aim is to have a versatile board, and extensions that could handle virtually any sensors, like NodeManager project, but for hardware ;)
And it's also a first time experiment in the land of PCBs

Apart 2 errors ( maybe more in the future !), it seems to be well routed, as tests been proving, but i still not tried the FOTA function.
Errors was a badly routed button and it seems that, after the RFM chip is soldered, communication with USBasp gets bad! Is it because SCK and MISO route ( from pin headers to atmega328 ) goes through the RFM chip before atmega ?

You were mentioning some mods in dualoptiboot in order to flash M25P40, https://forum.mysensors.org/topic/3160/ota-flash-types-for-mysensors/43.
Would it be possible to share these ?

And just out of curiosity, how did you manage to solder SI7021 and TSL2561 ?
By now, it seems like a mystery for me...