It is possible now to bring the tooling cost down if the job shop is set up to use 3D
printed low-run tooling. One can print a mold from high temp resin and get between 50 and
150 parts out of the machine before the mold becomes unworkable.
Not saying that's the path which would work well for Mitra, but it is something to
consider asking the factories that you have a relationship with. Making an enclosure could
be feasible even in low-run production, if there were enough interest - and a non-WIP PCB
:]
- code
Sep 24, 2021, 03:10 by taylorhayis(a)icloud.com:
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>>> :
>>
>>> Thanks Sam
>>>
>>> I was looking at the enclosure shown on the image on >>>>
https://disaster.radio/>>>> and thought that might have been real
:-(
>>>
>>> - Mitra
>>>
>>> On 23/9/21 10:30 pm, >>>> sam(a)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
>>>>
>>>> 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/
>>>>>
>>>>
>>>> Thx started fixing that link here: >>>>>
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
>>>>
>>>> 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
>>>>
>>>> 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>>>>>>> :
>>>>>>
>>>>>> 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.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> DisasterRadio mailing list
>>>>>>> >>>>>>>>
DisasterRadio(a)lists.sudoroom.org
>>>>>>> >>>>>>>>
https://sudoroom.org/lists/listinfo/disasterradio
>>>>>>>
>>>>>> -- Mitra Ardron ->>>>>>>
mitra(a)mitra.biz>>>>>>> >>>>>>>
www.mitra.biz
<http://www.mitra.biz/>>>>>>>> >>>>>>>
<http://www.mitra.biz> <http://www.mitra.biz/>
>>>>>> +61-491-082-515 mobile; +1-510-423-1767 whatsapp
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> DisasterRadio mailing list
>>>>>> DisasterRadio(a)lists.sudoroom.org
>>>>>>
https://sudoroom.org/lists/listinfo/disasterradio
>>>>>>
>>>>>
>>>>> --
>>>>> Mitra Ardron ->>>>>>
mitra(a)mitra.biz>>>>>> >>>>>>
www.mitra.biz
<http://www.mitra.biz/>
>>>>> +61-491-082-515 mobile; +1-510-423-1767 whatsapp
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>> --
>>> Mitra Ardron - >>>> mitra(a)mitra.biz>>>>
>>>>
www.mitra.biz <http://www.mitra.biz/>
>>> +61-491-082-515 mobile; +1-510-423-1767 whatsapp
>>>
>>
>>
> -- Mitra Ardron - >> mitra(a)mitra.biz>> >>
www.mitra.biz
<http://www.mitra.biz/>>> +61-491-082-515 mobile; +1-510-423-1767 whatsapp
> _______________________________________________
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>
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>