[chbot] LoRa peer to peer
Charles Manning
cdhmanning at gmail.com
Tue May 13 23:10:09 BST 2025
Has anyone here tried 900MHz Wifi (aka HaLow)?
In certain conditions some people have managed kilometers and pretty good
data throughput up to hundreds of metres.
On Wed, May 14, 2025 at 8:26 AM Mark Atherton <markaren1 at xtra.co.nz> wrote:
> I think that line-of-sight is the issue.
>
> 2.4GHz can easily be attenuated by walls, windows, & bananas.
>
> 433MHz is much more able to penetrate same...
>
>
> On 14-May-25 7:49 AM, Charles Manning wrote:
> > 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
> <
> 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
> > <mailto: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 <mailto: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/
> > <https://nz.pinterest.com/pin/759630662129071602/>
> >
> > Richard
> >
> > On Tue, May 13, 2025 at 5:08 PM Daniel Powell
> > <danielvieway at hotmail.com <mailto: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
> > <mailto: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
> > <mailto: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 <
> 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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