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Contrary Raduino

 

Hello to the group. This is my first post here.
I am building A BITX40 and I am having a lot of trouble with it and I am about to believe it is a bad Raduino.
Regardless whether I hook it up via the USB port or by connection to a 12 volt supply. The display comes on but the only thing that is displayed is: VFO A: 6.9980 Mhz.

It draws about 135 mA but the function switch and the 10 turn tuning pot do not work.
This is my first experience with a microprocessor in my 43 years of being licensed. I have spent many hours building and trouble shooting,? but this has me lost.

TIA
Jimmy,. W9JDH
 

It looks like your potentiometer doesnt have a +5v connected. Can you confirm that the pot's center pin changes voltage smoothly between 0 to 5v as you tune it?
- f

On Sat 21 Sep, 2019, 10:07 PM JD Hill, <w9jdh.qrp@...> wrote:
Hello to the group. This is my first post here.
I am building A BITX40 and I am having a lot of trouble with it and I am about to believe it is a bad Raduino.
Regardless whether I hook it up via the USB port or by connection to a 12 volt supply. The display comes on but the only thing that is displayed is: VFO A: 6.9980 Mhz.

It draws about 135 mA but the function switch and the 10 turn tuning pot do not work.
This is my first experience with a microprocessor in my 43 years of being licensed. I have spent many hours building and trouble shooting,? but this has me lost.

TIA
Jimmy,. W9JDH

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