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Re: DISASTER !!
Quite often the manufacturer leaves an empty hole on the synthesizer socket. When you plug in the Nano, it can be one pin off. Make sure you eliminate the empty hole. Of course, you could have been one pin off regardless. And, there are other reasons the Nano can be destroyed. Any ideas ? On Fri, May 4, 2018 at 1:26 PM, Vince Vielhaber <vev@...> wrote: People have found the best way is to cut it out one pin at a time, then desolder the remaining stubs from the pins.? ?It's been suggested to put a socket in it, then others have said if you do that it gets in the way of the display.? I never paid that much attention 'cuze I've never had to replace one.? I've blown up plenty of nanos, but not in a raduino. -- Michael Shreeve N6GRG |
Re: DISASTER !!
Vince Vielhaber
People have found the best way is to cut it out one pin at a time, then desolder the remaining stubs from the pins. It's been suggested to put a socket in it, then others have said if you do that it gets in the way of the display. I never paid that much attention 'cuze I've never had to replace one. I've blown up plenty of nanos, but not in a raduino.
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Vince. On 05/04/2018 03:53 PM, rickaputi via Groups.Io wrote:
Thanks, vince....you are probably right.....i checked the current --
Michigan VHF Corp. |
Re: uBITX & 160 meters
Of course, that linear amp should be vaguely linear, and not flat-topping your 1.8mhz into a square wave.
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Could be that it will clean up considerably if you turn down the gain at RV1. But even if you get it looking like a sine wave on the scope, will still need the 160m filter. On Fri, May 4, 2018 at 10:36 am, Jerry Gaffke wrote:
Not unexpected, looks vaguely like a square wave, which is what you get from a sum of odd harmonics. |
Re: I2C LCD mod required for CEC 1.073?
¿ªÔÆÌåÓýDon't go over 500K.?? The readout is
too close to the normal value (255) of open switches [so I
discovered!]
Mike ZL1AXG On 5/05/18 1:22 AM, Philip wrote: Info is here?
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Re: error in memory manager
Hello Ralph,
I would check the communication parameters: 1. Have you got the right USB port (the same as for uploading the HEX file). I suspect you have that right as it reads one byte, but please double check. 2. The parameters are 38400, None (for parity), 8 (bits data), One (stop bit). This is different to the programming settings as it communicates with the CAT section of the uploaded program. 73, John (VK2ETA) |
Re: DISASTER !!
Vince Vielhaber
You very well may have hosed your nano. disconnect the raduino from the radio and plug the usb in to your computer. What do you see?
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Vince. On 05/04/2018 03:17 PM, rickaputi via Groups.Io wrote:
SOMETHING SHORTED WHILE IN BREADBOARD STAGE...NOW ONLY GET AUDIO FROM --
Michigan VHF Corp. |
Re: error in memory manager
On Fri, May 4, 2018 at 2:21 PM, Arv Evans <arvid.evans@...> wrote:
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Re: For those keeping track of uBITX shipping times
#ubitx
I ordered my ubitx kit on 18 April. DHL picked up the package from Hyderabad on 2 May. The ubitx package just arrived in the US at my house on 4 May. That is fast delivery.
Vick KG7UNJ ? |
Re: 45Mhz crystal filter specification
Tim? AB0WR If you were to load your filter components into LTSpice and do a gain-frequency run on the design it might highlight where the problem is.? With LTSpice it is possible to do what-if changes to optimize your filter designs. I usually include the stage before and the stage following an existing filter because that evaluates the filter using its actual in-circuit impedances and drive levels. Arv? K7HKL _._ On Fri, May 4, 2018 at 12:12 PM, Tim Gorman <tgorman2@...> wrote: Allison, |
Re: error in memory manager
Ralph Since you have a spare NANO and are learning programming, it might be interesting to make that Arduino into one or more of several pieces of test equipment that will support your uBITX when it does arrive.? With its ADC (Analog) inputs the NANO could be a digital voltmeter with manual or automatic ranging.? Using any of several thermal sensors to make a contact or IR based thermometer for BITX RF PA stages.? And of course a signal generator with an Si5351a.? Or frequency meter with a N/10 prescaler (or N/100 for up to VHF measurements).? This software then could eventually be folded into a built-in-test-equipment suite for BITX systems. Arv _._ On Fri, May 4, 2018 at 11:08 AM, Ralph Mowery <rmowery42@...> wrote:
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Re: 45Mhz crystal filter specification
Allison,
I redid the scans with a 1khz resolution in order to help with the frequency resolution. Doing this shows the 45mhz signal to be right on. The 33mhz signal is right on also except in a couple of the scans I picked the wrong peak. Frequencies at the ends of the scans are off for some reason. The sig gen *is* at 3900khz and the vfo is also at 48900khz. My freq counter and my scope (rigol ds1074) both confirm that. Why the 45mhz filter drops the 45mhz signal by 50dbm and the 48.9mhz signal by only 30db still concerns me. I've also included scans at a couple of other points in the receiver. I must confess I'm at a loss here. My next step will probably be to turn the drive off to the finals, connect up my 2-tone generator and try to trace the signal through the transmit side to see where it is disappearing! If it disappears in the 45mhz filter then I'll need to contact Ashar to see what filter he is using. Thanks for your help. tim ab0wr On Thu, 03 May 2018 18:13:01 -0700 "ajparent1/KB1GMX" <kb1gmx@...> wrote: The 45mhz filter is rather narrow If memory serves its a 15khz (wide) |
Re: Arduino Projects...
Laurence Oberman
Start with teaching our kids. I did that to mine as already mentioned.
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Things are not free, movies, music books etc. but this age of torrents etc. and assumptions gets kids started on the wrong path. Because it online and available does not make it NOT stealing :( On Fri, May 4, 2018 at 1:05 PM, <ckotan@...> wrote:
Grrrrrrr, Jack! I hates me some thieves!! As a software developer, I share |
Re: uBITX & 160 meters
Not unexpected, looks vaguely like a square wave, which is what you get from a sum of odd harmonics.
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The relays are selecting the 80m low pass filter, with a corner about halfway between 4mhz and 7mhz, so 6.0mhz. Third harmonic of 1.8mhz is 5.4mhz, which is going to get passed quite well by your 80m filter. The push-pull amp probably nulls out most of the second harmonic.? So we get the fundamental and the 3'rd harmonic. Hook that up to an antenna and you will be getting heard quite well on both 1.8 and 5.4 mhz. Jerry On Fri, May 4, 2018 at 10:21 am, John wrote: This how CW at 160m looks like. |
Re: uBitx 20 goes to Alignment on startup
First off, Ian's ubitx manager is NOT compatible with our software so there is likely a good part of your problem. ?Our software was and is designed to be stand-alone, not run through anyone else's "manager" program. ?It's also designed to be compiled using the Arduino IDE and uploaded to the NANO using the same Arduino IDE. I cannot troubleshoot problems caused by improper installation of programs and have to say I'm sorry. ?If you want to run the W0EB/W2CTX programs, they have to be run as the only program installed on your NANO. ?We cannot be responsible for what other programmers have done in their code and that likely makes their programs incompatible with ours. This is in no way meant to disparage or criticize other's programming, merely stating that we do not copy or use their code to write ours and therefore have no way to allow our programming to be run as part of theirs, so if you try to do that, you are totally on your own and I can't help troubleshoot your efforts. ?If you had posted that information in the first place, this conversation would have been MUCH shorter. Sorry, Jim, W0EB
------ Original Message ------
From: "Jim" <ei8igjim@...>
Sent: 5/4/2018 12:22:56 PM
Subject: Re: [BITX20] uBitx 20 goes to Alignment on startup
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Re: uBitx 20 goes to Alignment on startup
¿ªÔÆÌåÓýHi Jim, thank you for replying ... well I suppose i better
explain what happened :'(
I was trying to load a program via ubitx manager with a raspberry
pi and the pi crashed and crashed my ubitx at the same time so I
would say the software isore than likely curropt as I did have the
radio running perfectly. I have the radio now about two months and
am really having fun with it, I even added the four vextra buttons
to it during the week and they worked perfectly so all was well
until the raspberry pi crashed and took the radio with it so I
really dont know much about programming the arduino? nano but ill
have a really good try HeHeHe... Hopefully Ill be able to get it
back as i really enjoy playing with it and your programs ( Thank
you ever so much for sharing all with us) I think its the best
little radio that came out in years and it was getting me back
into CW which I didnt do in about 25 years and hopefully get me to
know the Arduino language as well :-)
?Thanks a million once again for your help .. EI8IG Jim
On 04/05/2018 17:41, Jim Sheldon wrote:
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