23 Sep
2021
23 Sep
'21
8:10 p.m.
For what it’s worth Mitra, in my day job I develop products - often from plastic. I design
injection moulded parts, have a full CNC machine shop at home including 3d printing, and
relationships with factories in China and Australia. An enclosure like this is about a
$10k tool, and no more than $0.40 per set (front and back clamshell) with an MOQ of
2000pcs or so.
If there was a final footprint / PCBA, making an enclosure wouldn’t be a particularly
expensive or complex endeavour. That assumes someone is going to mass produce these
however.
If you need something 3D printed or machined moving forward however, shoot me a message
On 24 Sep 2021, at 11:20 am, Mitra Ardron
<mitra(a)mitra.biz> wrote:
Code
Yes, I meant the one on the video.
3D printing is a totally fine way of doing an enclosure in low volumes, but is a massive
difference in both reality and "cost" between buying something on Alibaba or
just via paypal from someone who has built them before, and something only available as a
CAD/3D printer file. I've gone through the process of finding a 3D printing shop, and
getting something made, with a less than 50% success rate, and a one-off is always more
expensive as even a good shop has to allow for the likely cost of getting it wrong the
first time.
One of the advantages disaster.radio potentially has over some of the other solutions its
the potential for geek-free setup and install. I can figure it out, but most of the
villages around here - who could use a setup like disaster radio - don't have a
resident geek, and trying to find a 3D printer to print a one-off certainly puts it in the
needs-a-geek bucket.
The enclosure Sam suggests sounds a better candidate, though it needs the panel mounted
separately.
Sam
I'll try that enclosure you suggest - its a good price. But I'm wondering, have
you tried using one of them with the other parts in that part list? How did you handle
mounting to and getting the aerial out, Are those connectors the right size for that,
without looking in detail at the components I'm guessing it would want the small
connectors for the solar panel cable but its unclear if the 4-8 or 9-12 connector would be
best for the antenna proposed - I think the smaller (the antenna says 8mm)
On 24/9/21 7:10 am, Code Bus wrote:
What enclosure are you referring to?
If you mean the one featured in the video, you're free to make them yourself. The
design exists as CAD and in 3d printable formats in the github repository. It is not less
"real" simply because it hasn't been mass produced.
Otherwise, like we've suggested, you can follow the Aliexpress parts list and make a
working device, or use any enclosure designed to prevent water ingress.
Sep 23, 2021, 20:46 by mitra(a)mitra.biz <mailto:mitra@mitra.biz>:
Thanks Sam
I was looking at the enclosure shown on the image on https://disaster.radio/
<https://disaster.radio/> and thought that might have been real :-(
- Mitra
On 23/9/21 10:30 pm, sam(a)bristolwireless.net <mailto:sam@bristolwireless.net>
wrote:
Can you clarify what the current state is - i.e. if I got the boards, built a pair of
units, and flashed it - then would the chat and map apps talk over it.
Yes that should be possible. You can buy them pre-flashed if you want to miss that step:
https://www.aliexpress.com/item/4000396836096.html
<https://www.aliexpress.com/item/4000396836096.html>
If using the webapp you only get a chat.
If you use the Android app then you get a chat and a map AFAIK.
By the way ... I notice there is a bad link to the enclosure on
https://disaster.radio/build/ <https://disaster.radio/build/>
Thx started fixing that link here:
https://github.com/sudomesh/disaster-radio-website/pull/12
<https://github.com/sudomesh/disaster-radio-website/pull/12> awaiting someone to
approve.
This was the enclosure used: https://www.aliexpress.com/item/4000452268197.html
<https://www.aliexpress.com/item/4000452268197.html>
It's fairly obvious how to put it together, but there are some instructions here too:
https://hackaday.io/project/170069-disaster-radio-lora-mesh
<https://hackaday.io/project/170069-disaster-radio-lora-mesh>
Thanks
Sam
- Mitra
On 23/9/21 10:49 am, Code Bus wrote:
The project lacks a maintainer with enough time to really give it the care it needs.
I've been spending my free time trying to modify the firmware for the v3 dual-module
prototype, it is slow-going.
Other LoRa boards seem to work pretty well with the firmware in its current state
Sep 22, 2021, 20:37 by mitra(a)mitra.biz <mailto:mitra@mitra.biz>:
I tried to find out what was happening with Disaster Radio, by
asking here - got zero responses :-( its really hard to figure out
if there is anything going on that is useful to connect with :-(
On 23/9/21 9:48 am, Greg Troxel wrote:
eM Grzegorz<emgrzegorz(a)interia.pl> <mailto:emgrzegorz@interia.pl>
<mailto:emgrzegorz@interia.pl> <mailto:emgrzegorz@interia.pl> writes:
Hi,active list?Grzegorz
Sort of. When people ask, someone answers. But not much seems to be
happening. I do have the impression that those on the list wish there'd
be more activity, and that most of them sort of hope to contribute. I
of course do not speak for the coalition.
Perhaps you can tell us why you're interested and what you'd like to see
as highest priority.
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