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EA2HW
Active Member
Joined:2 months  ago
Posts: 6
29/05/2017 7:46 am  

One month ago, I buil the proyect with firmware v1_mf05= It does not work.

I check all componentes=All OK include the diodes. Voltages, resistors, capacitors all OK.

Change the MCP6002 for one new and also change the DDS  AD9860 =  It does not work either

All readings SWR=999

Reading of serial monitor on a segment of the 2om band : 

14007979,999000,9,211

14036950,999000,22,332

14065921,999000,18,231

14094892,999000,12,223

14123863,999000,8,196

14152834,999000,7,230

14181805,999000,16,274

14210776,999000,10,212

14239747,999000,10,206

14268718,999000,12,235

14297689,999000,15,220

14326660,999000,0,220

14355631,999000,19,309

14384602,999000,10,206

14413573,999000,11,221

14442544,999000,15,227

14471515,999000,8,232

14500486,999000,15,223

14529457,999000,11,220

What checks can I do with an oscilloscope or a frequency meter?

73, Enio, EA2HW


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kc9zmy
New Member
Joined:7 months  ago
Posts: 1
29/05/2017 9:09 am  

Enio:

    I don't know if this is your problem but I had much the very same issue when I first build the Antenna Analyzer. The problem I had was that I inadvertently flashed it with the 3.3v board set. If you do that according to this Spark Fun Article : 

https://learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/troubleshooting-and-faq

  you can brick the thing. I didn't brick it just crippled it.  Totally bizarre output for no apparent reason and in my case the SWR was always 999 and the USB port wouldn't stay stable.  Now the way you have to unbrick it is to hit reset twice and then try to upload it. The problem is it will only stay in boot loader for about 8 seconds before it starts to run the sketch again. I had to hit Command+U (I'm running a mac) to do the upload as I couldn't mouse fast enough while I pressed the reset button twice. 

  After doing that sequence about 10 times Reset+Reset and then Command+U I saw the red LEDS on the Arduino flash and then I saw that the sketch was loaded. Of course making sure I had selected 5.5V first 🙂 Now I have a serial port, no more funky characters on the display when I run only with a USB. Now I can send commands from the USB Port. 

   So might want to add a note, to be sure your running 5.5V Micro Pro as the effects of flashing the 3.3V on the 5V device seemed to be totally unpredictable and the default on my setup was 3.3.  

  Not sure if this will resolve your problem but just make sure you have the right voltage for the processor as it will save you hours of frustration later. 

  73, Don KC9ZMY 


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EA2HW
Active Member
Joined:2 months  ago
Posts: 6
29/05/2017 1:02 pm  

Many thanks Don!

I have had that same problem but I solved it, it cost me a dozen attempts HI ...

Now, the communication with the PC is perfect, the firmware is loaded ... but the SWR are always 999. The problems are other ...

73, Enio, EA2HW 


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