Don't listen to me!!! ? Should be Nano-D6. ?

Triple check how you wired up that connection from Nano-A6 to C107. ? Measure the resistor you have inline, make sure it is 47k. ?Put a voltmeter across C107, measure the voltage there. ?Compare notes with somebody who has a working rig. ?I'd guess it should be a couple hundred millivolts with key down. ?Zero volts with key up. ?

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That carrier is on one of the crystal filter skirts, could be the BFO is too far into the skirt. ?If you are in CW LSB mode, try CW USB mode, and vice versa, that will flip the carrier to the other side of the filter. ?I assume you do get 5 Watts or so when shouting into the mike.

Sounds like an excellent addon to extend the bitx features
I vote Yes.

Joe
VE1BWV

Nice idea!

The way you set things up will only execute the scan() routine once (when you press the FB 4 times).
You need to call the scan() routine from the loop() routine so that it is executed repeatedly. You could create an additional mode (for example MODE_SCAN) for this so that the standard doTuning() is not executed while you are in scan mode.

If many users think this is a useful feature we could perhaps include it in the next version. Any votes?

If you are on Github, please create a fork so that I can merge your code once you got it running.

73 Allard PE1NWL

This code does not work.? I have tried it with many minor modifications but have not had any luck getting it to work. I would appreciate any advice.

The intent is that clicking the function button 4 times will enter into scan mode, with the scan limits, step and speed hardcoded into the sketch.? Moving the tuner exits scan mode.

Add or modify the raduino sketch v1.12 with the following:

// at 802 in v1.12
?
void scan() {
?
// store the initial tuning knob position
?? old_knob = knob_position(); ?
?? knob = knob_position(); ?
?
// modify these variables to define scan range, step and speed
// frequencies in kHz, delay in milliseconds
??? int scan_start_freq = 7175;
??? int scan_highest_freq = 7300;
??? int scan_step_freq = 2;
??? int scan_step_delay = 2000;
?
// test to see if knob position has changed
??? while (knob == old_knob) {
?
// test for upper limit of scan
??????? if frequency > (scan_highest_frequency * 1000) {
??????? frequency = (scan_start_freq * 1000)
?
// change frequency
??????? frequency = frequency + (scan_step_freq * 1000);
??????? setFrequency(frequency);
??????? updateDisplay();
??????? delay(scan_step_delay);
?
// get the current tuning knob position
?????? knob = knob_position(); ?
??? }
?
??? shiftBase();
}
?
// at 725 in v1.12
?
??? case 4:
????? scan();
????? printLine2((char *)"??? SCAN MODE?? ");
????? break;
?
// at 665 in v1.12
?
????????? case 4:
??????????? printLine2((char *)"??? SCANNING??? ");
??????????? break;
?
// at 652 in v1.12
?
??????? if (clicks > 4 && clicks < 10)
?

Hey thanks for all the replies.

Now I've got a lot of options to deal with the hot regulator. Makes sense that it's a 7805 for the raduino power. I'll heatsink or attach to my metal chassis for now and then consider some of the mods related to it.?

Thanks Fred for clarification on ground potential?

73

Jamie VA3RLF?

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basic electronic 12V input and 5 V output mean 7 V is going to heat up the 7805 !

a way to get the heat down is use zenerdiode incl. TR ( or another voltage regulator ) for the first voltage step-down to let us say 8 V

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