Re: Don't discount the rotary encoder as being at issue
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Mike? KC2WBV, and others...
The rotary encoder apparently is a bit fragile.? All outputs (phase-A, phase-B, and the push-button
switch can easily be damaged if 5 or 12 volts at any substantial current level is accidentally applied
while the switch contacts are closed.? That said...your experience with the encoder seems to match
what some others have said recently.? Not yet sure if the problem is related to build instructions or to
the encoders themselves.? It might be interesting if one of the bad encoders could be opened to see
just what is going wrong with them.
Arv? K7HKL
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On Thu, May 24, 2018 at 2:26 PM, Mike aka KC2WVB <rb5363@...> wrote: I had assembled both the UBitx and BitX40 last weekend. The 40 meter radio worked perfectly. The uBitX would not tune nor would it properly allow entering into the menu. I knew from testing the encoder that one side of rotary aspect was defective because it showed constant 4.68 volts dc but all else on the encoder seemed OK. I ordered 5 identical replacements for the encoder from Digi Key the night I assembled the radio. They just arrived today. While waiting for the encoder I was thinking the Raduino might be at issue too and was trying to find a replacement for it. I just installed the encoder and honestly I was geared to see no change but indeed that was the problem. The UBitX works perfectly now. I attached a picture showing the VFO is no longer stuck on 7.150 Mhz and you will have to trust me that pressing the shaft of the encoder provides all the menu features too.
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