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Daylight again schematic questions
Should R51 be connected to TX or 12V? On the schematic it's not connected to anything.
In the PTO the text talks about a 7809 but the schematic shows 7805. On a happy note, the PTO 3D print worked perfectly for me. It's getting harder to find real brass bolts here but eventually I tracked some down. The nuts fit the holes snugly. |
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Re: File /uBITX_6_N8ME_2_VU3GAO_Mods.zip uploaded
#file-notice
¿ªÔÆÌåÓýThanks for the quick answer Evan, ? Now I am confused (more). I thought that the Nextion editor construct was a separate issue from the uBITX V6 software compile. I am missing something(s) I guess. Is the Arduino uploading the Nextion HMI file (or its equivalent) from within this compile??? I was assuming that an HMI file for this Arduino software would be need to compiled and put on an SD Card in the display. Please point me to the resources I am missing here. I am obviously new to the uBITX world. ? 73 ? Jack Spitznagel ¨C KD4IZ Associate Editor ¨C AMSAT News Service AMSAT Ambassador kd4iz@... ? ? ? From: [email protected] <[email protected]> On Behalf Of Evan Hand
Sent: Friday, September 9, 2022 16:06 To: [email protected] Subject: Re: [BITX20] File /uBITX_6_N8ME_2_VU3GAO_Mods.zip uploaded #file-notice ? You may need to use the LTS version of the Nextion editor. Look for it on the Nextion web page. I am away from my qth right now. ?If you can not find it I will post the link when I get home.?
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Re: File /uBITX_6_N8ME_2_VU3GAO_Mods.zip uploaded
#file-notice
Need help troubleshooting. #sketch-too-big
For those who have successfully installed the latest drop of N8ME_2_VU3GAO_Mods, what Arduino ISP version are you using? -What are the parameters in the ISP you are using for a "stock" uBITX V6 complete kit? I have noodled with several:? -Board: Arduino Mini -Processor: ATmega328P -Programmer ArdunoISP (and a couple of similar appearing entries) I am getting the infamous "Sketch too big" error even after playing with several versions of the ISP and following Ashhar's description of compiling and loading the sketch. part of error message reads: text section exceeds available space in board Sketch used 29214 bytes(101%) of available space. Maximum is 288672 bytes. I don't mess with Arduino enough to have a clue what to comment out or otherwise eliminate that would allow a good compile. Have read something about eliminating the boot loader from compile, but isn't boot loader required to init the firmware? Currently have ISP 1.8.12 installed. Pretty obvious some parameter or other is not right and I am unable to prevent the bloat on compile. A search of the messages found a lot addressing the issue for other firmware, but little useful for the N8ME/VU3GAO version. Thanks in advance for any clear text, non jargon laden explanations offered. 73 - Jack KD4IZ |
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#sbitx #sbitx-k3ng
#sBitx
#sbitx-k3ng
Anthony Good
¿ªÔÆÌåÓýI have some updates available for testing here:This includes the following improvements to the spectrum display (inline picture below): - Dragging of the displayed bandwidth: grab the spectrum display frequency in the green outlined area - Dragging of the pitch: grab the pitch line in the purple outlined area - Dragging of the low and high filter frequencies: grab the low and high frequencies in the yellow outlined areas You can ¡°grab¡± these areas using your mouse or the touch screen. ?The VFO frequency can still be changed by dragging anywhere else in the spectrum display, and right-click QSY is still supported as well. Feedback welcome. 73 Goody K3NG |
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Re: Some calculations on the IF filter and USB filter
Actually there¡¯s already literature on it. I¡¯m going to dig again
ex:?Re: #uBITX Firmware KD8CEC - IF-Shift etc. (groups.io) [email protected] | Need some explanation on v4 sketch cdt .... |
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Some calculations on the IF filter and USB filter
Hello,
When analyzing the programs KD8CEC or Ubitx V4,5,6 I have a little trouble to understand how the different values of First IF, Second USB, Second LSB and int USB are calculated.
In the KD8CEC program, there are different examples, but I¡¯m having a hard time figuring it out.
The best is an example, and it speaks louder:
Let¡¯s imagine (These are examples) that I have a 45 MHZ filter that has a center frequency of 45002200 htz with a bandwidth of 7.5 KHtz on each side of this frequency, and then an SSB filter of 12000800 htz in center frequency with a bandwidth of 2.5Khz on each side?
What are the calculations to make to find these 4 values.
This will allow the most accurate adjustment of the filter configuration.
So:
First IF= ? Calculation formula
Second USB=?? same
Second LSB=?? same
Init USB=?? same
?
Knowing that in all programs seen, VFOA and VFOB still have the same value (7150000 and 14200000)
?
Thank you
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Peter Marks
Jack Spitznagel (KD4IZ)
Gerard
HA3HZ