[arm-allstar] Remote Base BCD Channel Steering

Wed Jan 20 22:40:51 EST 2016

I channel steer a GM300 with an arduino uno, i trigger a 2n3904 transistor
with a logic high from the gpio pin to the base, emitter to ground and
collector to the gm300 steering pin, no diodes in line.

On Wed, Jan 20, 2016 at 7:31 PM, Ed Wilhelm <vacuumtubesforever at gmail.com>
wrote:

> Just saw the Repeater Builder link. None of that stuff exists. Will be
> going from the rpi gpio to probably a ULN2803 and then to the 4 pins on the
> accessory connector.
>
> If nothing is pulled low the radio will operate normally.
>
> Ed
>
>
>
> On 01/20/2016 10:09 PM, Doug Crompton wrote:
>
> OK, So am I to assume the external diode BCD steering does not exist and
> the RPi2 just controls the 4 bits (or 5) bits straight into the radio? If
> all are high the front panel works?
>
>
>
> *73 Doug WA3DSP http://www.crompton.com/hamradio
> <http://www.crompton.com/hamradio>*
>
>
> ------------------------------
> Date: Wed, 20 Jan 2016 17:33:27 -0800
> From: kg6uyz at gmail.com
> To: arm-allstar at hamvoip.org
> Subject: Re: [arm-allstar] Remote Base BCD Channel Steering
>
> For a GM300 you supply a GND trigger to one or more of the 4 channel
> steering pins.  The pins have to stay grounded to stay on the channel you
> selected, if you release the triggers the radio reverts back to whatever
> channel you last manually selected with the channel up/down button.
>
> Example in this link:
> http://www.repeater-builder.com/motorola/maxtrac/remote-channel-select.html
>
>
> On Wed, Jan 20, 2016 at 2:04 PM, Doug Crompton < <doug at crompton.com>
> doug at crompton.com> wrote:
>
> Ed,
>
>  OK fine. I can supply an example if you want but I was wondering what
> they wanted to see. Do you set the four lines BCD and then strobe another
> pin to load it? That is often the way it is done or maybe it just monitors
> the lines for them being stable and switches?
>
>
>
> *73 Doug WA3DSP
> <http://www.crompton.com/hamradio>http://www.crompton.com/hamradio
> <http://www.crompton.com/hamradio>*
>
>
> ------------------------------
> To: arm-allstar at hamvoip.org
> From: vacuumtubesforever at gmail.com
> Date: Wed, 20 Jan 2016 16:44:27 -0500
>
> Subject: Re: [arm-allstar] Remote Base BCD Channel Steering
>
> Doug,
>
> Nothing fancy, just 16 channel stuff.  GM300, Maxtracs, Kenwood 90 series
> stuff. Just got to yank the lines low.
>
> Ed
>
> On 1/20/2016 11:14 AM, Doug Crompton wrote:
>
> Ed,
>
>  What is the format of the BCD control you are wanting? 16 channels - 0001
> - 1111 ??  Does the radio take TTL  levels? Is there a strobe bit once
> the other bits are setup?
>
>
>
> *73 Doug WA3DSP http://www.crompton.com/hamradio
> <http://www.crompton.com/hamradio>*
>
>
> ------------------------------
> To: arm-allstar at hamvoip.org
> From: vacuumtubesforever at gmail.com
> Date: Wed, 20 Jan 2016 06:31:55 -0500
> Subject: Re: [arm-allstar] Remote Base BCD Channel Steering
>
> Hi Doug,
>
> Never did get a response. Was trying to avoid reinventing the wheel.
>
> Never thought of using the patch command to do DTMF stuff. Will do some
> investigating.
> That's the cool thing about Allstar/Asterisk, if you can think of
> something, there's usually a way to do it.
>
> All your efforts are really appreciated.
>
> Ed W8VT
>
> On 1/19/2016 9:21 PM, Doug Crompton wrote:
>
> Ed,
>
> In researching I saw you asked the same question years ago and I did not
> see an answer then. Did you ever get one?
>
>
> http://lists.allstarlink.org/pipermail/app_rpt-users/2013-February/005962.html
>
> Using the GPIO on the Pi to BCD control a radio would not be hard. In fact
> a user has already done that using function codes and an external script I
> wrote to control the bits. It is in use commercially.
>
> The idea for the future code we are writing is to get specific stuff out
> of the base code and put it where users can create their own interfaces to
> whatever hardware they want.
>
> Here are the basics of how I would do it....
>
> Use the patch command (with a different code) to pass DTMF to a Linux
> script via an extensions.conf dial plan.
> Then the script would take the number sent, convert it to BCD or any other
> format the radio requires
> and send it to the GPIO bits. Of course you would have to interface those
> bits to the actual hardware.
>
> If you needed to pass a code to a remote node you would use the standard
> codes to pass the command to the remote nodes dial plan.
>
>
>
> *73 Doug WA3DSP
> <http://www.crompton.com/hamradio>http://www.crompton.com/hamradio
> <http://www.crompton.com/hamradio>*
>
>
> > To: <arm-allstar at hamvoip.org>arm-allstar at hamvoip.org
> > From: <vacuumtubesforever at gmail.com>vacuumtubesforever at gmail.com
> > Date: Tue, 19 Jan 2016 20:04:16 -0500
> > Subject: [arm-allstar] Remote Base BCD Channel Steering
> >
> > Is this supported with the current image? If so, anyone know the
> > details, what gpio pins, etc?
> >
> > Tnx
> >
> > Ed W8VT
> > Beckley WV
> > Nodes 27849, 29496, 29982
> > _______________________________________________
> >
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> >
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> >
>
>
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>
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>
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>
>
> --
> Jeff Ackerman
> kg6uyz at gmail.com
>
> _______________________________________________ arm-allstar mailing list
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> BBB and RPi2 web page - http://hamvoip.org
>
>
> _______________________________________________
>
> arm-allstar mailing listarm-allstar at hamvoip.orghttp://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>
> Visit the BBB and RPi2 web page - http://hamvoip.org
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>
>
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>
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-- 
Jeff Ackerman
kg6uyz at gmail.com
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