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BITX40

 

Hi, I"m pretty new around and about a beginner
My new BITX worked for a few days correcty but now does not like me any more
Turning on the display says
1. Raduino v1.01
??? Calibrating....
2. A:00:0000?? n...
?? -025 0000 up to 00261500 depending on the tuning
and it provides me with a hissing sound
3, no further action
My guess is, that Arduino lost his mind / program - power on the board is o.k.
I think, the sw-version is a bit old, but how can I replace it with my computer ?
Anybody got a siple idea dor me ?
DG3OQ
 

Hi Gert,

it seems your Raduino is going into calibration mode.
This normally only happens when pin A2 (red wire) is connected to ground.

Make sure that your pin A2 is not accidentally connected to ground.

Before upgrading to a newer software version, first make sure the radio
works OK with the stock software v1.01.

Newer software with additional features is available at


73 Allard PE1NWL
 

Hi Allard
no, the red one is not at the ground and the only thing happening is that the rig is not mouving from discriebed pos. 2 !

73 Gert
 

Make sure the Function switch is working. Fun switch should be open until pressed.? I had one cheap surplus switch failed ... goofy problem for awhile :) Installed a new PB switch fixed problem.? ?Hope this helps

On Sun, Nov 26, 2017 at 9:28 AM, Gert Krause <krause-gk@...> wrote:
Hi Allard
no, the red one is not at the ground and the only thing happening is that the rig is not mouving from discriebed pos. 2 !

73 Gert


 

No, he's still running the stock software (v1.01) - the basic sketch doesn't support the Function Button yet.
For some reason his raduino enters the calibration mode at power on.
This normally only happens when the CAL wire (red wire on input A2) is grounded.

Gert, when you measure with a DVM directly on pin A2, what voltage do you see?
Input A2 should be HIGH (5V) when it is open (due to the internal pull-up resistor).
If it is LOW then check for any shorts.
If you are absolutely sure that there is really no short to ground, then input A2 may be blown.
(arduino inputs can easily blow when loose wires accidentally touch +12V on the BitX40 main board)

73 Allard PE1NWL
 

Hi Allard
at A2 I measure 2V and can not find any short to ground.
Next thing I will try to wire a resitor from A2 to +5V and see what happens - comming back.
Thanks
Gert
 

Yeah you could try an external pull up resistor of 10-47K.
Perhaps the internal pull up resistor is faulty.

73 Allard PE1NWL

On Tue, November 28, 2017 17:07, Gert Krause wrote:
Hi Allard
at A2 I measure 2V and can not find any short to ground.
Next thing I will try to wire a resitor from A2 to +5V and see what
happens - comming back.
Thanks
Gert
 

Hi
the problem is solved in an brutal amateur way : the solution with a resistor did`n work so I connected A2 dirctly to +5V. Now the ability of calibrating the offset is lost but that?s a thing I can live with, it?s better than buying somthing new.
I think the start of the problem was the other selfmade 6W- rig on my table : I tested both on a dummyload for outputpower separatly, all the cables of the BITX in originaly length wound to a smal ring, probably a fine coil with high induction ! I forgot all about the physics I once learned !
Thank?s for your help anyway, hope to meet you on the band one day

73 Gert DG3OQ
 

Instead, you can use 4K7 or some such pull up, Please check.

regards
Sarma
?

On Wed, Nov 29, 2017 at 9:22 PM, Gert Krause <krause-gk@...> wrote:
Hi
the problem is solved in an brutal amateur way : the solution with a resistor did`n work so I connected A2 dirctly to +5V. Now the ability of calibrating the offset is lost but that?s a thing I can live with, it?s better than buying somthing new.
I think the start of the problem was the other selfmade 6W- rig on my table : I tested both on a dummyload for outputpower separatly, all the cables of the BITX in originaly length wound to a smal ring, probably a fine coil with high induction ! I forgot all about the physics I once learned !
Thank?s for your help anyway, hope to meet you on the band one day

73 Gert DG3OQ


 

OK Gert,

good to hear you found a way to work around the situation.
Strange though that a pull up resistor isn't sufficient and that you need
to hard wire it to the +5V rail.

73 Allard PE1NWL
 

Hi
thank you, a 1k.-resistor did the trick !

73 Gert DG3OQ

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