That WILL increase the gain of the LM386

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On Sun, Aug 13, 2017 at 8:28 PM, KN4AAG Kevin Estep <kevin.estep@...> wrote:

I added the VU2ESE AGC to my BITX40, along with a bypass switch. It does work, but as I found in another post, I need more audio out with the AGC engaged. The poster recommended replacing the 1uF capacitor at C113 (LM386 pins 1 to 8) with a 10uF cap. I intend to try that. Has anyone here made that change? Any other mods to this AGC that would be helpful?

Vince, I hope you are happy now. This could be the coolest mod on the rig. Thank you much for the idea. Looks like the keying bar I found is a little big, so I will keep looking.



A little more progress on the back panel and power distribution board. ?I managed to blow both the 5v and 12v regulator by only putting screws in the closest 2 standoffs while "testing". This let the loose standoff on the other side ground out the 2 outputs. The 5v regulator made a really nice bang when it went off with some really nice smoke and odor. I was extremely disappointed with the failure of the 12v regulator which quietly quit doing its job and just started outputting 2.5 volts with no fanfare at all.

The back panel is getting closer. I've taken the 3 amp Diode for polarity protection out twice. I'm dropping a couple tenths of voltage with it in line so I am in a Diode Dilemma. To D or not to D is the question? I think I will put it back in...I added a current sense point with a 2 pin jumper to bypass. The convenience may come in handy, plus those two connectors were taking up way to much room in the junk box. ?

The back panel
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From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of chris gress
Sent: Tuesday, August 15, 2017 1:07 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Muffled and poor audio #bitx20help

?

OK, now you look again. The two /r /objects are defined at different
scope levels so there is no conflict. The first definition of /r /has
global scope while the second has function (local) scope. Since they are
at different scope levels, the compiler will not throw an error. Prove
it to yourself with this expansion of your post:

#include <Rotary.h>
Rotary r = Rotary(3, 2); // Global scope

int counter;

void setup()
{
Rotary r = Rotary(3, 2); // Local scope
unsigned char result = r.process();
if (result == 0)
counter = 0;
Serial.begin(9600);
}

ISR(PCINT2_vect) {
unsigned char result = r.process();
if (result == DIR_CW)
counter = counter + 1;
if (counter > 1020) {
counter = 1020;
}
else if (result == DIR_CCW)
counter = counter - 1;
if (counter < 5) {
counter = 5;
}
Serial.println (counter);

}
void loop() {
}

The compiler compiles the code without error, as it should.

Jack, W8TEE
------------------------------------------------------------------------
*From:* Vince Vielhaber <vev@...>
*To:* BITX20@groups.io
*Sent:* Tuesday, August 15, 2017 12:38 PM
*Subject:* Re: [BITX20] Encoder tinning


Look again:

#include <Rotary.h>
Rotary r=Rotary(3, 2); <----------------------

comment out analogtinnig A7

in setup()
Rotary r=Rotary(3, 2); <----------------------

r is defined more than once.


Vince.



On 08/15/2017 11:40 AM, Jack Purdum via Groups.Io wrote:

He's not redefining the object/r/. He is defining an /unsigned char/
variable named /result/ into which he is assigning the return value from
the /process() /method of the /r/ object. There should be no compiler
error from that.

Jack, W8TEE

------------------------------------------------------------------------
*From:* Vince Vielhaber <vev@... <mailto:vev@...>>
*To:* BITX20@groups.io <mailto:BITX20@groups.io>
*Sent:* Tuesday, August 15, 2017 10:58 AM
*Subject:* Re: [BITX20] Encoder tinning


You're going to get an error or warning for redefining r. You've
definied it globally right under your include statement, then again in
setup. In setup it's only local but you'll still get an error/warning.

Vince.


On 08/14/2017 08:21 PM, Norberto Modanesi wrote:

Hi folks:
What if I add these lines to the Raduino code
#include <Rotary.h>
Rotary r=Rotary(3, 2);

comment out analogtinnig A7

in setup()
Rotary r=Rotary(3, 2);

Then the interrupt routine
ISR(PCINT2_vect) {
unsigned char result = r.process();
if (result == DIR_CW)
counter=counter+1;
if(counter>1020){counter=1020;}
else if (result == DIR_CCW)
counter = counter-1;
if(counter<5){counter=5;}
Serial.println (counter);

}
Finaly, replace every analoRead(analogtunning) with counter.-

Would it work?

73 de LU5DNM

Norberto Modanesi
San Nicolás

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Michigan VHF Corp.

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