[chbot] LoRa peer to peer
Henri Shustak
henri.shustak at gmail.com
Mon Jul 21 00:31:49 BST 2025
Mark is correct on this as well. Line of sight is key with those
higher frequencies!
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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