[chbot] LoRa peer to peer

[Charles Manning]

It isn't clear how much data you want to move.

Bluetooth LE using a coded PHY can get to around 1km line of sight with
just a trace antenna and that's a full 2-way solution.

https://blog.nordicsemi.com/getconnected/tested-by-nordic-bluetooth-long-range



On Tue, May 13, 2025 at 9:27 PM Robin Gilks <gb7ipd at gmail.com> wrote:

> I'll try and address a few points
>
>    - sx1278 maxes out at 500MHz so no LoRaWan as that's 915MHz here in NZ
>    - Bowtie antenna at 433MHz would be a bit big!! I've used them on
>    2.4GHz though when I had the wind turbine on the other side of a paddock
>    with a WIFI Link
>    - 433MHz using $1 OOK radios (used on my weather station) if OK for
>    single 18650 cell power and a 1w 6v solar panel but only reaches about 30m
>    and then only with the receiver in the window
>    - Looking to update an old project that used NRF24L01 link from my
>    tunnel house back to either the workshop or the house. I'll be sending LCD
>    screen data updates one way and button presses the other for full remote
>    control
>    - Remote power is a 12v 120AHr car battery from the wreckers with a
>    10w solar panel keeping in on float so 120mA TX current on LoRa won't be a
>    problem (I'm hoping to run without the PA turned right up)
>
> The modules haven't arrived yet but a modded tunnel house window
> controller PCB is modified and most of the code is ready to run once I have
> something to connect up
>
> I see that they also do OOK - I wonder if they would make a better
> receiver than the $1 ones on the weather station or if it's more
> sophisticated OOK ;)
>
>
> On Tue, May 13, 2025 at 5:22 PM Richard Jones <richardandjanenz at gmail.com>
> wrote:
>
>> In the early days of wifi I had good success with wifi over 4km from
>> Diamond Harbour to Lyttelton using a bow tie antenna similar to this one:
>> https://nz.pinterest.com/pin/759630662129071602/
>>
>> Richard
>>
>> On Tue, May 13, 2025 at 5:08 PM Daniel Powell <danielvieway at hotmail.com>
>> wrote:
>>
>>> ESPNow, or WiFi LR, both Expressive protocols. Wifi LR does 1km line of
>>> sight or more with good antennas. ESPNow does 500m line of sight, but again
>>> more with a reasonable external antenna.
>>>
>>>
>>>
>>> Daniel.
>>>
>>>
>>>
>>> *From:* Chchrobotics <chchrobotics-bounces at lists.ourshack.com> *On
>>> Behalf Of *Mark Beckett
>>> *Sent:* Tuesday, 13 May 2025 4:53 pm
>>> *To:* chchrobotics at lists.ourshack.com
>>> *Subject:* Re: [chbot] LoRa peer to peer
>>>
>>>
>>>
>>> I've played with NRF24L01 and easily done 400m.
>>>
>>> On eissue is with the high power versions you need a bit of physical
>>> seperation otherwise it seems to overwhelm the front end.
>>>
>>>
>>>
>>> There is a lot of discussion on LoRa and hardware on the discord
>>> https://discord.com/channels/1215950134874210334/1218106537403220018
>>>
>>> They mainly use 915 Mhz.
>>>
>>>
>>>
>>> Mark
>>>
>>> On 13/05/25 14:59, Robin Gilks wrote:
>>>
>>> I'm looking for a radio link that has a bit better range than an
>>> NRF24L01 which I have found doesn't really make 100m reliably. Got some
>>> sx1278 modules (for use on 433MHz) on order so I'll be able to experiment
>>> but any pointers or experiences in other than LoRaWAN ?
>>>
>>>
>>>
>>> Cheers
>>>
>>>
>>> --
>>>
>>> Robin Gilks
>>>
>>>
>>>
>>>
>>>
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