3905 Net tonight from Bandon OR
Checked in to the 40M late Net tonight - Net Control was K1YAG in Fredericksburg TX. for 1657 miles.. Had several other unremarkable contacts confirmed, then got K4CEA in Columbia SC for 2920 miles with a 5/5 report received!
Running stock 12V powered PA into a 160M EFHW wire tuned for 40M.
I am sold on this radio design!
Tom KF7RSF
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Re: Conflicting information
Back to the original topic of how to power the Raduino during update. (I just posted my final solution to the fan noise in that thread; ignore what I said earlier in this one).
I got to the point tonight where I was ready to update the software. When I connected it to the computer via the USB cable (with all connections to the Raduino disconnected) it did not power up. It's possible the cable I'm using doesn't have the power lead in it. I have no idea what it originally was used for; found it in the junk box! So I reconnected the ?Raduino connectors and disconnected the power connectors and the DDS connection from the main board. Raduino powered up and the update was no problem.
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John - WA2FZW
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I too was having trouble with fan noise. Been playing with it all week! I have an 80mm (3+ inch) 12V brushless fan. I put a 100 ohm 2W resistor in series with the fan and a 680uF cap (that's what I had in the junk box) to ground on the fan side of the resistor. No noise at all now. Fan doesn't run at full speed, but moves more than enough air for the tiny box.
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John - WA2FZW
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Sorry for the delay. Yes try that mod.
toggle quoted message
Show quoted text
At 03/06/2017, you wrote: Same sound without antenna.
By tweaking the bfo you mean adding the 27pF cap to the board? Peter Parker mod)
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I'm in the process of putting my BIT40 together (it showed up Tuesday) and finally have the front panel finished enough to power up the Raduino. So I put a freq counter on the DDS output and tuned it to 7.0000 on the display. The counter reads 4.97083 MHz. I know it's a 12 MHZ IF, but being off by 0.02917 MHz is a bit of an odd freq. When this is finished, is that where the Raduino cal comes in?
Vince.
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Michigan VHF Corp.
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Re: CW on Allard's Code v1.13
That makes sense...
Jack, W8TEE
From: Allard PE1NWL <pe1nwl@...>
To: [email protected]
Sent: Saturday, June 3, 2017 9:26 PM
Subject: Re: [BITX20] CW on Allard's Code v1.13
On Sat, Jun 3, 2017 at 12:12 pm, Jack Purdum wrote:
I'm curious why not two I/O pins using the internal pullup resistors and a dit() and a dah() function?
I guess this is just to save two I/O pins? Anyway it would require some extra code and I wonder if we will be able to implement this as we are running out of program space and dynamic memory. 73 Allard PE1NWL
?
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Re: CW on Allard's Code v1.13
On Sat, Jun 3, 2017 at 12:12 pm, Jack Purdum wrote:
I'm curious why not two I/O pins using the internal pullup resistors and a dit() and a dah() function?
I guess this is just to save two I/O pins? Anyway it would require some extra code and I wonder if we will be able to implement this as we are running out of program space and dynamic memory. 73 Allard PE1NWL
?
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Re: CW on Allard's Code v1.13
On Sat, Jun 3, 2017 at 11:36 am, Charlie Morrison wrote:
I am currently putting together a bitx with your mods implemented, however I can only see a straight key implemented. Can I connect a paddle (using another input for dots) and would the code require modification. If not I guess a keyer output could be connected to the cw key pin on the nano
Hi Charlie, The current code only supports straight key. Of course you could also connect an external electronic keyer to the CW KEY input instead. 73 Allard PE1NWL
?
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Decided to pimp my BitX40....
Just some LED strips in my temp case. :-)
Joe,
KD2NFC
Sent from my iPhone
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Hi,
This is my first post to the group. I recently purchased a BITX40 SMD and really like it. So much that I was wondering if someone has converted it to other bands such as 15 or 20m? Any info would be appreciated.
73 Matt
W5LL
Sent from my iPhone 7
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Re: W8TEE TFT/VFO Board from FDIM talk
Ok Charlie, Thanks!
73, Kevin NZ1I
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Re: What is this trimmer for?
It is used to adjust the PA drive.?? See Alignment of the BITX40 at http://www.hfsigs.com/bitx40v3_wireup.html
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Re: CW on Allard's Code v1.13
I'm curious why not two I/O pins using the internal pullup resistors and a dit() and a dah() function?
Jack, W9TEE
From: Ashhar Farhan <farhanbox@...>
To: [email protected]
Sent: Saturday, June 3, 2017 2:50 PM
Subject: Re: [BITX20] CW on Allard's Code v1.13
I envisaged the same line to be used for straight and paddle keys. here is how :
1. the morse line is analog input pulled high by an external resistor of 4.7K from 5 volts.
2. the straight key is connected normally. the paddle is connected such that the dot switch has a 4.7K resistor in series and the ?the dash switch has ?a 10K resistor in series
3. when the straight key is pressed, the analog line dips to below 0.5v
4. when the dot is pressed, the 4.7K resistor shorts to ground, the voltage at analog input is 2.5v or thereabouts.
5. when the dash is pressed, the 10K resistor shorts to ground, the voltage at analog input is now 3.75 or so.
6. when both the paddles are pressed (Iambic), then the voltage is 1.75?
This is the keyer logic that i am building on ubitx too.
- f ?
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What is this trimmer for?
Maybe a dumb question but I would like to know what is it supposed to do this 100 ohm trimmer  
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Re: CW on Allard's Code v1.13
I envisaged the same line to be used for straight and paddle keys. here is how :
1. the morse line is analog input pulled high by an external resistor of 4.7K from 5 volts.
2. the straight key is connected normally. the paddle is connected such that the dot switch has a 4.7K resistor in series and the ?the dash switch has ?a 10K resistor in series
3. when the straight key is pressed, the analog line dips to below 0.5v
4. when the dot is pressed, the 4.7K resistor shorts to ground, the voltage at analog input is 2.5v or thereabouts.
5. when the dash is pressed, the 10K resistor shorts to ground, the voltage at analog input is now 3.75 or so.
6. when both the paddles are pressed (Iambic), then the voltage is 1.75?
This is the keyer logic that i am building on ubitx too.
- f ?
On Sun, Jun 4, 2017 at 12:11 AM, Charlie Morrison <charlie@...> wrote: ? Hi Allard ? I am currently putting together a bitx with your mods implemented, however I can only see a straight key implemented. Can I connect a paddle (using another input for dots) and would the code require modification. If not I guess a keyer output could be connected to the cw key pin on the nano ? 73 de Charlie GI4FUE
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CW on Allard's Code v1.13
? Hi Allard ? I am currently putting together a bitx with your mods implemented, however I can only see a straight key implemented. Can I connect a paddle (using another input for dots) and would the code require modification. If not I guess a keyer output could be connected to the cw key pin on the nano ? 73 de Charlie GI4FUE
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On Sat, Jun 3, 2017 at 09:13 am, philip yates wrote:
So where do I find the correct bit of code to modify. Its still running v1.10 for now.
Analog pin A6 (connector P1, blue wire) is still currently free. It may be used in future arduino versions though.
In the sketch, look for
#define ANALOG_TUNING (A7)
change that to
#define ANALOG_TUNING (A6)
Then connect the blue wire (from A6) to the pot, instead of the purple wire (from A7).
73 Allard PE1NWL
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The capacitor on the tuning pot definately works as my spare Raduino, works fine.
Phil - G7BZD
On Sat, Jun 3, 2017 at 5:49 PM, Cesar <Cesarleon@...> wrote: Have you added a 100pF cap on both sides of central wire? I did and after a while tuning was unresponsive. It turned out one cap was blown
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Have you added a 100pF cap on both sides of central wire? I did and after a while tuning was unresponsive. It turned out one cap was blown
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Unfortunately the nano on a Raduino is soldered in place.
Ahhh well, as My father used to say, I always do things the awkward way, set fire to the house to light a candle. Think its time i tidied the spaghetti wiring up. ? Phil - G7BZD
On Sat, Jun 3, 2017 at 5:32 PM, Vince Vielhaber <vev@...> wrote: According to the schematic, yellow isn't ground.? Orange is.? All three wires for the pot go right to the nano.? So if there's not a blown trace, there's prolly a blown nano port.? You may be able to get away with switching the yellow to one of the other wires and change the software accordingly.? Black, Brown and Blue all seem to be available, although I don't know if any of those have been used in newer versions of the Raduino.
Alternately, you can replace the nano.? If it's socketed it should be no big deal.
Vince.
On 06/03/2017 12:13 PM, philip yates wrote:
Its Yellow wire GND connection for the tuning pot on connector P1 that i
managed to short to +12v.
So where do I find the correct bit of code to modify. Its still running
v1.10 for now.
Thanks
Phil - G7BZD
On Sat, Jun 3, 2017 at 5:03 PM, Ashhar Farhan <farhanbox@...
<mailto:farhanbox@...>> wrote:
? ? you have probably blown the analog line, move to another analog
? ? line, recompile the arduino sketch to use the new line.
? ? - f
? ? On Sat, Jun 3, 2017 at 9:27 PM, philip yates <phil@...
? ? <mailto:phil@...>> wrote:
? ? ? ? I just managed to short my Raduino tuning connection ( yellow
? ? ? ? wire ) to 12v, display still works, but its
? ? ? ? tuning low at 6.78 or thereabouts, unresponsive to the pot.
? ? ? ? Any ideas if its a fixable issue, no other damage as far as i
? ? ? ? can see.
? ? ? ? Just had one of those days, decided it would be far safer to
? ? ? ? un-plug the soldering iron for now.
? ? ? ? Phil - G7BZD
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? Michigan VHF Corp.? ?? ?
? ? ? ? ? ? ? ? ? ? ? ? ?
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Raj vu2zap
Allard PE1NWL
Kevin Gilot NZ1I
Charlie Morrison