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Re: #bitx40 #bitx40
#bitx40
Aurelio IZ8EGM The designer of the Raduino does monitor this group, but also has other jobs.? He may respond as time allows, or others might step in to help.? By "oscillator of the raduino" I am assuming that you mean the Si5351 synthesizer chip instead of the clock oscillator for the AVR microprocessor on the Arduino NANO board? If that is true, how did you test its outputs to determine that it is not working? Arv? K7HKL _._ On Sun, Jan 28, 2018 at 11:03 AM, sarnese via Groups.Io <sarnese@...> wrote: hi to all |
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Re: uBitx audio filtering
#ubitx
Thanks Jerry
? I deleted the original post. Here are the traces of my original audio output with 40 meter band noise input and after adjusting the BFO for better low frequency response for CW. The spikes on the left are at odd multiples of 60 Hz and come from attaching the uBitx to the PC without isolation. An isolation kit is on it's way. And the response with the Sotabeams CW narrow filter in (550 Hz to 850 Hz) for original and adjusted BFO ??? Bob KD8CGH |
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Re: #bitx40 #bitx40
#bitx40
the ic oscillator of raduino doesn't work i have checked it.
there is not good signal from it, i would buy a new one (because i don't have the good iron and is it too much little for my eyes) but the is no way to speack with manager of the project. i have sent more email but i am waiting. is there a good email to speack with their? thanks to help me Aurelio IZ8EGM |
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Re: FS: Bitx AGC Kits
Those of you that have gotten a mail from me you are covered. If you have not gotten a mail from me at this time most if not all kits are spoken for. I am going to build the orders up and finish up the rest of the kits. I will keep this updated later today or tomorrow with what is left if anything. 73 ?N8DAH |
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Re: I did it again.. i plugged the arduino pins on reverse
César EA3IAV
I could not get the blink sketch tonbe uploaded. I also tried the raduino sketch to see that tab thing you mentioned. At first I did not understand that selecting one ino file would just put them all on the arduino software
As you see an error popped up here too |
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#bitx40 #bitx40
#bitx40
hi to all
i need an help when i have reiceived the bitx40 i found that raduino didn't work, where is possibile to buy a new raduino board without the display? i have sent an email to the website but at moment nobody help me. please give me a good solution to repair it 73 Aurelio IZ8EGM sarnese@... |
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Re: I did it again.. i plugged the arduino pins on reverse
Cesar? EA3IAV You may have blown your Arduino NANO, or maybe not.? In the later picture the red POWER indicator LED is ON, indicating that your NANO is receiving power, but that does not really tell you the state of the on-board voltage regulator or the micro-processor itself.? You can test your NANO and the associated LED but the process may not be easy unless you are already familiar with writing software to the NANO.? If you are familiar with writing software to the NANO you can overwrite the existing BITX software with something like the "BLINK" program that is in Examples in the Arduino IDE.? If this is successful (if the LED actually blinks) it would indicate that at least part of the NANO micro-controller is working. Problem with doing this is that you have to overwrite your original BITX operating system with BLINK code, and then re-write the BITX software back into the NANO after doing the BLINK test.? There is nothing particularly unique about the Arduino NANO that is used in the BITX or uBITX transceivers.? Any Arduino NANO that has the standard NANO pinout should work after you have programmed it with the appropriate BITX software.? At present I see NANO boards going for about US$3.25 each on Ebay.? New NANO boards from most vendors come pre-programed with the boot-loader and the BLINK program. /g/BITX20/attachment/21076/0/Raduino%20Pinout.pdf Arv? K7HKL _._ On Sun, Jan 28, 2018 at 5:46 AM, César EA3IAV <Cesarleon@...> wrote: i plugged the pins in tge wrond side. Now the sreen is like this? |
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Re: I did it again.. i plugged the arduino pins on reverse
Jack Purdum
If you are comfortable with using the Arduino IDE, why not load the ASCII table program (i.e., Examples\04. Coomunication\AsciiTable) and see if it runs. You can view the Serial monitor by clicking on the magnifying glass icon that appears near the top-right of the IDE screen. Make sure the number (e.g., the 9600 in Serial.begin(9600)) matches the baud rate set near the bottom of the Serial monitor. If you see the table, the Nano is probably ok. Jack, W8TEE From: Joe Puma <kd2nfc@...> To: [email protected] Sent: Sunday, January 28, 2018 11:24 AM Subject: Re: [BITX20] I did it again.. i plugged the arduino pins on reverse Good gosh. You’re not having any luck over there are you. ?Slow it down and take your time. Mistakes happen when you rush Joe KD2NFC? Sent from my iPhone
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Re: Checking irf510
 Your "universal tester" unit is telling you quite a bit about your MOSFETs.? As others have said, "if it identifies the device as a MOSFET the device is testing as GOOD".? Because this tester uses fairly low voltages the internal capacitance may show as fairly high relative to the datasheet.? IRF510 type MOSFETs internal capacitance decreases as you increase the drain-to-source voltage.? This is why they are usable into low VHF frequencies when operated at higher voltage.? It is also why they make very good VVCs (Voltage Variable Capacitors), but that is a story for some other post. The tester is also telling you what the base bias needs to be to turn the IRF510 ON. Because this is a MOSFET the tester treats it as a switch instead of as a linear amplifier, but that test is adequate to tell you if the device is GOOD or BAD. As mentioned by others, my earlier suggestion that you obtain or build a Diode RF Probe similar to that designed by is still valid and highly recommended. Arv? K7HKL _._ On Sun, Jan 28, 2018 at 6:16 AM, M Garza <mgarza896@...> wrote:
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Bob Benedict, KD8CGH
Aurelio IZ8EGM
N8DAH