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1. the Nano can send data back on the serial
port to help diagnose a rig that is not working.
Perhaps report the status of PTT, and the analog readings
for the key jack. Nano could report
frequencies sent to the LOs, and the BFO.
2. Maybe add a feature where the Nano can be
stepped through a sequence of toggling
the bits for the parallel connections to the LCD, so those with
limited test equipment
can use a voltmeter to check one-pin-at-a-time.
3. Have a feature where the Nano could cause the
Si5351 to output 1MHz on one oscillator
at a time. Then an AM broacast band receiver can confirm the
SI5351 output (will sound
like dead carrier).
Your idea is good; and my suggestion is don't try
to make a Cadillac when a Chevrolet will do the job.
That is to say, basic and functionality first, with
documentation. Make the Cadillac later.
Good on ya!
On 04/27/2018 05:09 PM, John wrote:
I have started
developing a diagnostic software for the uBitx.
The need arose following a forum member's trouble with his
The objective is to help both the original kit builder for issues
like wiring or "not working" problems, but also to the more
advanced experimenters both during construction and after "oops
moments" like after a bad wiring or when a loose lead that "is
only there for 5 seconds and will never touch another part of the
circuit" went wandering around the board (I raise my hand here).
So far it only tests the I2C bus, the communication with the
SI5351 and the analogue inputs of the Raduino in a graphical form.
The plan is to expand to the audio circuit, the receiver chain,
the TX low pass filters' relays and hopefully more.
This is where I need your input to determine what to test for in
the first instance and then some ideas to make the test results as
simple but still useful to more advanced users.
So if you can give me some feedback as to what issues you had when
building the kit that I could incorporate in the diagnostic
software either as a new test or as a suggestion as to how solve
the issue, as a self help, that would be great.
Tests need not be Arduino only tests. Operator 's interpretation,
as in "Do you hear the tone in the speaker, Y/N" are quite ok.
I have uploaded the beta version of the software at https://groups.io/g/BITX20/files/uBitx%20Diagnostic%20software%20by%20VK2ETA/ubitx-Diagnostic%20-%20Version%20B0.2-2018-04-28.zip
Passed the tests are the questions of deployment and the best way
to do that since new kit builders may not be familiar or confident
to setup the Arduino's IDE. So maybe HEx files and a simple
All the best,
73, John (VK2ETA)