That shows only the connection from the sm1000 to the radio. It does not
show using a handheld mic. Where do you speak into?
On 2/6/2019 12:00 AM, Steve wrote:
this maybe:
https://freedv.org/sm-1000-hardware-howto/
On Wed, Feb 6, 2019 at 12:28 AM K6DLC <[email protected]> wrote:
Does anyone have an idea on how to interface a handheld/desk
microphone to use the sm1000?
On 2/4/2019 10:24 AM, Don wrote:
I am currently working on getting the 700D mode to work with the SM1000.
It is not certain that this will be possible because of the memory
needed.
Also Dave is looking at new compression modes with different performance
and bandwidths.
I see the current firmware as best suited for experimenting and developing
on a desktop PC. To make a small, low cost embedded version one would
likely want to do a major re-write of the code. Lacking that, I suggest
that you look at processor versions that have a lot more memory so that
it will support future modes. The STM32F7 family looks interesting.
Don Reid - W7DMR
On Mon, Feb 04, 2019 at 05:42:15PM +0000, Richard wrote:
Hi All,
I hear this mailing list covers the SM1000 hardware implementation.
I am thinking of (well, I've started) designing a "module" version designed
to plug into a rig. The idea being that if you're building a radio you can
include a small plug-in module on pin headers that adds digital voice.
Because it lives inside other equipment it can be smaller and simpler than
the SM1000, just keeping the core functionality without the isolated
interfaces, external enclosure, etc. Essentially it's a stripped-down
SM1000 in a smaller physical form factor. I've not got as far as a draft
placement but I am anticipating something on the order of 50 mm square.
Is anyone else interested in this? Any comments or suggestions?
If no-one else wants it I will probably build a few for myself anyway.
Software is not my thing so unless there's a good reason otherwise I expect
it to run the standard SM1000 firmware.
A couple of things I have not been able to work out, 1. what's the
not-fitted EEPROM intended for? and 2. what is the USB OTG used for? It
looks like device mode is used for updates but in what situation would host
mode be used?
Richard
M1FJA
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Daniel Curry
California American Legion Amateur Radio
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Trustee for Palo Alto Veterans hospital KI6UIG
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Daniel Curry
California American Legion Amateur Radio
Area 2 Commission and California Department Chair.
Trustee for Palo Alto Veterans Hospital KI6UIG
US Air Force Veteran
PGP: AD5A 96DC 7556 A020 B8E7 0E4D 5D5E 9BA5 C83E 8C92
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