Lowest power, short (10s of meters) range, low data rate, wireless technology

[Don Y]

I'm looking for the lowest power (think: fewest battery changes)
wireless comms available:
- short range (ten-tens of meters)
- low data rate (KB/s) but the potential for CONTINUOUS data transfer
(perhaps layering a protocol to ensure *reliable* transmission)
- need not be "standards" compliant (but must be licensed bands)
- tolerant of other "talkers" in their space

Ignore the costs of network establishment/configuration as "one time"
events.

On paper, it appears that BLE would outperform ZigBee and ANT+
but the devil is in the details.

Anyone using any of these in a *battery* powered application
to comment on their actual observations?

[Jan Panteltje]

On a sunny day (Thu, 13 Jun 2024 19:06:36 -0700) it happened Don Y

Post by Don Y
I'm looking for the lowest power (think: fewest battery changes)
- short range (ten-tens of meters)
- low data rate (KB/s) but the potential for CONTINUOUS data transfer
(perhaps layering a protocol to ensure *reliable* transmission)
- need not be "standards" compliant (but must be licensed bands)
- tolerant of other "talkers" in their space
Ignore the costs of network establishment/configuration as "one time"
events.
On paper, it appears that BLE would outperform ZigBee and ANT+
but the devil is in the details.
Anyone using any of these in a *battery* powered application
to comment on their actual obsebrvations?

I have some bluetooth audio link modules
can be used for data too, tx and rx both battery based, very small.
Runs about a up to few hours on a battery charge
ebay

[Liz Tuddenham]

Jan Panteltje <***@comet.invalid> wrote:

[...]

Post by Jan Panteltje
I have some bluetooth audio link modules
can be used for data too, tx and rx both battery based, very small.
Runs about a up to few hours on a battery charge
ebay

Not showing up on eBay yet. Loads from Germany and Latvia but none from
NL.

What sort of range do they have?

[Jan Panteltje]

On a sunny day (Fri, 14 Jun 2024 13:11:37 +0100) it happened

Post by Liz Tuddenham
[...]

Post by Jan Panteltje
I have some bluetooth audio link modules
can be used for data too, tx and rx both battery based, very small.
Runs about a up to few hours on a battery charge
ebay

Not showing up on eBay yet. Loads from Germany and Latvia but none from
NL.

https://www.ebay.com/itm/385988155881

Bought years ago, recently needed it for my new TV, to my surprize it worked right away.
It is a one way audio link,
so if you want to send data via the thing, you need to for example use modem chips like TCM3105 (up to 1200 Bd).
I have used that chip to send data via the 27 MHz (think it is still a license free band here) in the Z80 days.

Post by Liz Tuddenham
What sort of range do they have?

10 meters maybe.

This is ebay with everything on a PCB:
https://www.ebay.com/itm/155931101533
have not tried that one.