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No soldering PTT solution for a Raspberry pi and Quansheng type radio with CM108?

 

Hello,
?
I see a lot of discuss and possible solutions but they all require a lot of skill and possibly equipment.
I know that VOX is frowned upon for a number of reasons. Although maybe it would be possible to get the custom firmware on the quansheng to be more responsive.
?
?
The use case here is either a total noob to this hobby, or someone in a less developed country where getting additional parts might take longer or be more expensive.
Also a simple mental exercise on to "hack" the most of out the available parts should be pretty interesting.
?
?
So I see a lot of solutions being offered for how to trigger the PTT but they all involve a lot of work. Please do not tell me, why these are not really "problems" or how the end user "should already know how to do this"
as this is often the easy answer offered in almost all communities when something requires a lot of additional thought.
?
Is there then a way to get PTT to work using only the CM108 sound card, a standard set of 2.5 to 3.5 and 3.5 to 3.5 cables and a raspberry pi?
if adding additional wires to connect something from the sound card to the pin is unavoidable then maybe something that can be connected using dupont style connectors for example
might be any option.
?
All of these parts should be easily found just about anywhere in the world at this point in time.
?
Sorry for the rather direct approach but as someone who has been in a bunch of technical communities for a very long time. I have experienced the usual short answer and then someone comes along and finds a new way to
do achieve what was previously undoable via some clever hack or unexpected bug.
?
thanks for your patience and consideration
?
?
?
?
 

Direwolf on Raspberry PI supports CM108 PTT directly on a Raspberry PI.? Onee can then connect a CM-108 USB sund?card to the USB port on the Raspberry PI and ?gett PTT with no soldering.

An example is discussed in:



which?uses a traditional?DINAH board or can work with?the DINAH ATGP (stackable DINAH with Pi Zero 2 W).

More?details can be found?at:



On Tue, Jul 23, 2024 at 4:39?PM lonelycollegeboy19 via <lonelycollegeboy19=[email protected]> wrote:

Hello,
?
I see a lot of discuss and possible solutions but they all require a lot of skill and possibly equipment.
I know that VOX is frowned upon for a number of reasons. Although maybe it would be possible to get the custom firmware on the quansheng to be more responsive.
?
?
The use case here is either a total noob to this hobby, or someone in a less developed country where getting additional parts might take longer or be more expensive.
Also a simple mental exercise on to "hack" the most of out the available parts should be pretty interesting.
?
?
So I see a lot of solutions being offered for how to trigger the PTT but they all involve a lot of work. Please do not tell me, why these are not really "problems" or how the end user "should already know how to do this"
as this is often the easy answer offered in almost all communities when something requires a lot of additional thought.
?
Is there then a way to get PTT to work using only the CM108 sound card, a standard set of 2.5 to 3.5 and 3.5 to 3.5 cables and a raspberry pi?
if adding additional wires to connect something from the sound card to the pin is unavoidable then maybe something that can be connected using dupont style connectors for example
might be any option.
?
All of these parts should be easily found just about anywhere in the world at this point in time.
?
Sorry for the rather direct approach but as someone who has been in a bunch of technical communities for a very long time. I have experienced the usual short answer and then someone comes along and finds a new way to
do achieve what was previously undoable via some clever hack or unexpected bug.
?
thanks for your patience and consideration
?
?
?
?



--

73,
AB1PH
Don Rolph
 

The "All In One Cable" (AIOC) is a simple solution.
?
?
73,
John WB2OSZ
 

Thank you for you patience and reply.? however from what i understand this still requires an additional piece of hardware with DINAH board, this an additional expense and complication.? so not exactly my goal either sadly
 

Thanks for the reply.
The AIOC is a good solution but sadly rather expensive, hard to get / manufacture, and requires soldering the audio terminals even after the board has arrived.?
So that isn't a good solution for this use case either
 

Soldering really really REALLY isn't all that hard.

On Tue, Jul 23, 2024, 6:48?PM lonelycollegeboy19 via <lonelycollegeboy19=[email protected]> wrote:

Thanks for the reply.
The AIOC is a good solution but sadly rather expensive, hard to get / manufacture, and requires soldering the audio terminals even after the board has arrived.?
So that isn't a good solution for this use case either
 

Use the CM108 as is and use the GPIO on the RPi to do the PTT. Keying circuit is simple and easy to build. Yes, you will have to solder a bit. You can't make something out of nothing, so a bit of work is always involved. This would be about the simplest way I can think of to do the job.

On Tue, Jul 23, 2024 at 4:19?PM John Tetreault (WA1OKB) via <john.h.tetreault=[email protected]> wrote:

Soldering really really REALLY isn't all that hard.

On Tue, Jul 23, 2024, 6:48?PM lonelycollegeboy19 via <lonelycollegeboy19=[email protected]> wrote:
Thanks for the reply.
The AIOC is a good solution but sadly rather expensive, hard to get / manufacture, and requires soldering the audio terminals even after the board has arrived.?
So that isn't a good solution for this use case either
 

lonelycollegeboy:

since you will need both audio input and output to support Direwolf, the native Raspberry PI is insufficient: it only has headphone output (unless you want to tap HDMI).

So you need an extra piece of h hardware?anyway.

On Tue, Jul 23, 2024 at 6:45?PM lonelycollegeboy19 via <lonelycollegeboy19=[email protected]> wrote:

Thank you for you patience and reply.? however from what i understand this still requires an additional piece of hardware with DINAH board, this an additional expense and complication.? so not exactly my goal either sadly



--

73,
AB1PH
Don Rolph
 

I haven¡¯t read this thread yet, so apologies if something similar was mentioned, but as per subject I¡¯m just throwing out that I¡¯m using an EasyDigi with USB PTT (uses a Prolific chip) with a FT60R and it works fine for my little small igate/digipeater. I¡¯m using a Fe-Pi clone hat for audio (WB7FHC.com). While I did have to solder the GPIO pins, you could probably order one with them already soldered for a small extra fee I¡¯d imagine. I also have an EasyDigi (with USB PTT) for Kenwood K2 HT¡¯s, such as Baofengs, TYT¡¯s, etc. is this Quenscheng in subject an HT or mobile? If HT, the same EasyDigi I have for K2pin would work with it. I was using a Yaesu 8900R and SignaLink prior to using just a FT60R and it worked fine as well, but wanted to free up my 8900 to use it for voice. Many ways to skin that cat. :-)

Sent from my iPhone Pro Max
 

I just read and watched the video about the AIOC. Wow. I don¡¯t NEED onr as have many ways to do everything I need using RPi¡¯s, SignaLinks, MobiLinkD, EasyDigi¡¯s, etc, etc, but totally WANT one of them it¡¯s cool. Glad I looked at this thread now as sold on this AIOC. :-)
 

I am not sure about the "no solder part, the pre-made cables (mini-DIN to stereo sound card jacks) are rather expensive ($25 U.S.), but available
Some of these are as low as a couple of dollars U.S.
Same with PTT.? If the radio has a RCA jack for PTT, then maybe something as simple as cutting off the end of an old speaker wire (with RCA) and using a 3V relay board.
Again, maybe a couple of U.S. dollars each - in quantity.
?
?
That could be wired with yo the Pi GPIO with dupont style plugs.? There are version of the relay board with headers where thge GPIO would connect, so the dupont style connectors would work.
You could probably find some 3.3V realys (without the boards that you could connect with dupont connectors directly.
?
Maybe lots of clicking, but that's about the cheapest you are going to get.
?
-------
Rob KB8RCO
 

I just used one of these daughterboards on both my Raspberry PI APRS nodes. GPIO pins defined in the Direwolf config file.
Changed default pin 28 to pin 25 and relay on daughter board works fine?
?

Rick KC0HH

On Tue, Jul 23, 2024 at 10:04?PM Rob Giuliano via <kb8rco=[email protected]> wrote:
I am not sure about the "no solder part, the pre-made cables (mini-DIN to stereo sound card jacks) are rather expensive ($25 U.S.), but available
Some of these are as low as a couple of dollars U.S.
Same with PTT.? If the radio has a RCA jack for PTT, then maybe something as simple as cutting off the end of an old speaker wire (with RCA) and using a 3V relay board.
Again, maybe a couple of U.S. dollars each - in quantity.
?
?
That could be wired with yo the Pi GPIO with dupont style plugs.? There are version of the relay board with headers where thge GPIO would connect, so the dupont style connectors would work.
You could probably find some 3.3V realys (without the boards that you could connect with dupont connectors directly.
?
Maybe lots of clicking, but that's about the cheapest you are going to get.
?
-------
Rob KB8RCO

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