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It works! Thanks. Now I just have to determine the optimum value. I guess that is what I get for getting a good deal on ebay. I'm gradually learning how the code works. 73 Brent

Hi Brent, an alternative way to fix your problem is perhaps the following change. Normally, when the pot is at its upper limit, the 'knob' value should read 10000. Fast tuning will normally start when

Thanks a lot! Looks really interesting.

Hi I think you made a mistake in labeling the filter at the input of the receiver section. It is a BPF not an LPF Regards Lawrernce

Would changing the value in line 1943 to something less than 10000 help?

Hi again Allard I tried making those changes, no luck. Changing the values does extend the tuning range, depending on what value I put in (eg? I can get the radio to tune to 7105 instead of 7100),

Goran VE6GPO wrote... Looks great, but nitpicking a bit, isn't the filter over on the left actually a bandpass filter and not a low pass filter? -- 73 Keith VE7GDH

Thanks I'll let you know how I make out 73 Brent

Another idea, which you may have already implemented: Different builders will have different size and placement of the two touch pads, and thus different capacitance when not being used. Also, some

Hi Jerry, Thanks for this idea. I haven't considered that option. When I have some time I'll try it out to see if it would work. If so it could save us one I/O pin! 73 Allard PE1NWL

Goran, Thank you !! 73, Dale K9NN Sent: Tuesday, October 03, 2017 7:46 PM To: [email protected] Subject: Re: [BITX20] BITx40 Block Diagram ? Last spring I did the same for the DX section of VE6AO.

sorry should be line 1831, not 1838

Hi Brent, OK, now I understand. In v1.24, at line 1838: knob = knob * 10000L / 10230L; // scale the knob range down to 0-10,000 change to: knob = knob * 10001L / 10230L; // scale the knob range down

Hi Allard Sorry for the confusion. What I mean is that there seems to be some resistance left in the pot when you reach the stop at the upper frequency end, so the voltage on the wiper of the pot

Last spring I did the same for the DX section of VE6AO. Created a block diagram in Visio. Here's the picture: Hope this helps. 73, Goran VE6GPO

Mike: 36 hours is pretty good!! Also, you wouldn't have stuck with it that long if you weren't getting some kind of fun out of it. What's the flicker from? Is it when you update the screen? If so,

Sorry, don't understand the 300 Hz at the upper end. Perhaps you mean 7300 kHz? You said you set the pot-span to 100 kHz. But to what values did you set the min and max frequeny to? If they are stil

Hi Mike. What I posted was mainly supposed to be an example of what could be done. It is part of a larger work in progress, a home sprinkler system built on a Raspberry Pi 3. (It evolved from an

Dollar to a donut that it's because the setCursor() function has the X coordinate wrong. Look in loop() where the display is updates and mess around with the X coordinate. What it is doing is printing

One slight not-so-obvious advantage of this scheme: ? ? Shorting that keyer paddle to case ground with your body would count as key-down. Could well be not-so-obvious advantages to using Allard's