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I have a red and a gray toroid. Clearly not black so I'll treat the gray one as black.. Biggest problem I have is that my DDS-VFO kit arrived missing parts.. Sent an email this morning to Farrukh

Gentlemen, I have eliminated everything except for a code issue. If any of you: 1. Built a DDS VFO using the QST article instructions and 2. Downloaded the rotary files from Brian Lows github, and 3.

Hi! My kit came with 5 band color code resistors versus the ones referenced in the instructions which are 4 band color code resistors. I thought this may help somebody save some time deciphering the

Hi! Regarding the LC Circuit that goes on Y1. The QST in depth document calls out Cx as a 150pF and the instruction manual from Farrukh's link calls out a 56pF. I was clarified by Jack that the

WA4GLI, I didn’t have any issue and my library shows Rotary with the ‘h’ extension, as it should. I suspect you somehow got a corrupted download. Included is the listing for Rotary.h /* * Rotary

Thanks. I have downloaded this file several times and it always drops the h extension. I don't know why. Will try your code To: SoftwareControlledHamRadio@... From:

WA4GLI, You might also try enabling the Vcc line to your encoder. According to the library internal pull-ups are inlace but I had a similar problem and that cured my issue.

Gary, Sorry, that was over my head. I am working to understand microprocessors in general, and Arduino in Particular, as fast as I can. I have amassed a significant amount of knowledge over the past

Dennis, Does your encoder have a small printed circuit board like this? These are the common KY-040 encoder. You may also have the encoder without the pcb. If you have this type, run a line from 5 Vdc

No. All he's saying is that you need to run a line from 5V to the '+' on the encoder. You can take the 5V from any of pins 7, 8, 9, 10 on J1. Jack To: "SoftwareControlledHamRadio@..."

Gary, Thanks. Yes, mine has a pcb (it is a KY-o40) and I am feeding 5 vdc to it. To: SoftwareControlledHamRadio@... From: SoftwareControlledHamRadio@... Date: Tue, 5 Apr 2016

Voltage on the + connection of the KY 040 measures 5.07vdc To: SoftwareControlledHamRadio@... From: SoftwareControlledHamRadio@... Date: Tue, 5 Apr 2016 18:22:53 -0500 Subject:

In case I did not mention it earlier, I tested the sw circuit with a DMM and pressing the switch sends D4 on the Nano to ground. Tomorrow, I am going to test the pulses with an oscilloscope. Dennis

Dennis, Well I’m stumped then. Bye the way, I hooked up a bare encoder without the external pull-up resistors (that is what is on the pcb) and it worked fine. Can you load the example called

FWIW: you shouldn't use a Serial.print() call in an ISR, since that method uses interrupts itself. Something is definitely out of whack here, since there are over a hundred of these boards out there

Jack, I agree about your conclusion - I’m guessing bad connection or solder joint on the DDS VFO board. Just wanted to test the encoder separate from the DDS VFO to confirm it is okay and then point

Yeah, something strange has to be going on, but it's hard to tell what. Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Tuesday, April 5, 2016 10:00 PM Subject: Re:

A continuity matrix for your encoder issue

Glad to see this up on the site...I'm sure it will be helpful. Jack, W8TEE To: SoftwareControlledHamRadio@... Sent: Wednesday, April 6, 2016 3:25 PM Subject: Re:

Any thoughts to developing an antenna analyzer using the DDS VFO as the core of the analyzer?