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Re: Excessive Noise
¿ªÔÆÌåÓýMark, just remember, for troubleshooting¡ all you need is the Main board, the RF board, and the display¡ you can take everything else out of the chain (eg RX antenna straight to the RF-in on the RF board¡ and TX antenna or dummy load on the TX OUT of the RF board.?? ? Once calibrated, I do recommend removing JP4 from the RF board¡ no need for it being there except for calibration. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of epif18 via groups.io
Sent: Wednesday, February 5, 2025 9:36 AM To: [email protected] Subject: [SoftwareControlledHamRadio] Excessive Noise ? Hey yall, I've built my boards and have them all hooked up.? I've started with receiver checkout, and unlike my V11 which was amazing !, I have a lot of noise, specially on 40M.? I'm not in an ideal environment yet, but the behavior is so different than V11.? I can pick up very strong CW signals (one!) and a spanish AM broadcast at 7.35 something.? So in the process of checking things out, I hooked up my SA to TX out on the RF board and TXed SSB, which looked fine.? Then I switched to CW, and the freq was good but when I released the key and the RX returned, I got this.? 25MHZ, and 3x, probably higher harmonics too.? Square wave!? These pop up after the first time I key the TX and remain. I'm running V50.2, metal chassis.? This appears in slightly different forms forms all bands, 160M-6M, but the spurs always appear at 25MHz .... I have other integration issues I have to resolve in the mean time, but what's up with this? Thanks Mark KU3O |
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Excessive Noise
Hey yall,
I've built my boards and have them all hooked up.? I've started with receiver checkout, and unlike my V11 which was amazing !, I have a lot of noise, specially on 40M.? I'm not in an ideal environment yet, but the behavior is so different than V11.? I can pick up very strong CW signals (one!) and a spanish AM broadcast at 7.35 something.? So in the process of checking things out, I hooked up my SA to TX out on the RF board and TXed SSB, which looked fine.? Then I switched to CW, and the freq was good but when I released the key and the RX returned, I got this.? 25MHZ, and 3x, probably higher harmonics too.? Square wave!? These pop up after the first time I key the TX and remain.
I'm running V50.2, metal chassis.? This appears in slightly different forms forms all bands, 160M-6M, but the spurs always appear at 25MHz ....
I have other integration issues I have to resolve in the mean time, but what's up with this?
Thanks
Mark
KU3O |
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Re: SMD Stencil/Reflow solution?
¿ªÔÆÌåÓýI have one of these too¡ makes removing SMD parts a snap (mine is a different model).? Soldering tweezers. ? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of D Solt via groups.io
Sent: Wednesday, February 5, 2025 8:57 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] SMD Stencil/Reflow solution? ? Thanks Greg!? I've been looking for something to measure SMD parts. dave, n3ds ? On Wed, Feb 5, 2025 at 7:50?AM Greg KF5N via <greg.electricity=[email protected]> wrote:
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Re: SMD Stencil/Reflow solution?
¿ªÔÆÌåÓýThanks!? Just bought one.? Looks like a reasonable tool. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Greg KF5N via groups.io
Sent: Wednesday, February 5, 2025 6:50 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] SMD Stencil/Reflow solution? ? I have the FNIRSI tweezers: ? Pretty good!? Nice to have on the bench during assembly to double-check things. ? -- 73 Greg KF5N |
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I have been using STM32F103 BluePill boards for several years without any major issues and have them driving ILI9341 TFT displays OK.
I decided to try/experiment ?the STM32F401 and have a bought a Blackpill and a Nucleo64 STM32F401 Boards program fine in most respects except that I can't get any TFT display with a ILI9341 to work.
?
I just get a Grey Screen yet the same code works with a F103 Bluepill.
I have a test jig with a 40 pin ZIF socket so I can swap between a STM32F103 Blue Pill and a STMF401 BlackPill and keep the pin wiring the same to eliminate a wiring issue.
?
I am using https://github.com/stm32duino/BoardManagerFiles/raw/main/package_stmicroelectronics_index.json
and stm32 mcu BASED BOARDS MANAGER v 2.9.0 I am testing with? the TFT_eSPI examples TFT_Print_Test
?
As there doesn't seem to be a User Setup specific for a STM32F401 and a ILI9341 I am using the closest I can find i.e. Setup32_ILI9341_STM32F103.h
Pin wiring to the default for above.? Bluepill and Blackpill have their SPI on the same pins.
This setup works fine with a BluePill when I select a F103 board.
All I do is change the Board in the Arduino IDE from an F103 to a F401 and re-compile and upload. No display on the ILI9341 TFT but I also have blink running and its fine.
?
Its got me puzzled.
I also have the same TFT working fine with an ESP32 and on AVR Arduinos.
?
I also have a Nucleo64 STM32F401 board and it behaves exactly the same.
Issue seems to be relate to SPI on the F401 as the F103 is fine. Anybody got any ideas?
I plan to put an oscilloscope onto the SPI pins and see if there is a difference. Could the F401 be using a different SPI mode to the F103? ?
Any ideas?
?
73
Dave
GM4NFI
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Re: T41 receive attenuator working?
¿ªÔÆÌåÓýOk thanks.? I see what went wrong¡ that section was copied straight out of the BPF manual and unfortunately not updated.? I can fix that. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of D Solt via groups.io
Sent: Tuesday, February 4, 2025 10:49 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 receive attenuator working? ? The assembly manual T41_RF_Board_Assembly_Manual_V12_042324.docx was confusing in the following paragraph which I understood to say, use address "100":? Thanks for all you do on this project.? I am loving it! ? "2. I2C addressing and switching. ? On Tue, Feb 4, 2025 at 11:23?AM K9HZ via <bill=[email protected]> wrote:
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Re: T41 receive attenuator working?
The assembly manual T41_RF_Board_Assembly_Manual_V12_042324.docx was confusing in the following paragraph which I understood to say, use address "100":? Thanks for all you do on this project.? I am loving it! "2. I2C addressing and switching. The RF board is controlled via I2C communications from the V12 Main board.? An MCP23017 16 bit I/O expander is used to communicate with a central processor via SCL and ?SDA serial lines brought in through pins 7 and 5 of J3, the ¡°RF CONTROL¡± connector.? The I/O expander has hex address 0x24, and the user can select any of eight chip addresses from ¡°000¡± to ¡°111¡± shorting the solder switches provided (nb. the address of the expander for the T41 V12 primary receiver BPF address is ¡°100¡±¡ so the solder switch on the board for A2 at JP4 should be filled and the rest left blank).? See the following for more information: ?" On Tue, Feb 4, 2025 at 11:23?AM K9HZ via <bill=[email protected]> wrote:
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Re: T41 receive attenuator working?
¿ªÔÆÌåÓýYou are quite welcome Dave¡ For feedback, which documentation is lacking to help avoid a problem here? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of D Solt via groups.io
Sent: Tuesday, February 4, 2025 8:33 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 receive attenuator working? ? That was it!!!! Wrong address. Now all three boards work with varying receiver attenuation.? Now I'm on to calibration.? Thank you all for your help. dave, n3ds ? On Mon, Feb 3, 2025 at 6:27?PM K9HZ via <bill=[email protected]> wrote:
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Re: T41 receive attenuator working?
That was it!!!! Wrong address. Now all three boards work with varying receiver attenuation.? Now I'm on to calibration.? Thank you all for your help. dave, n3ds On Mon, Feb 3, 2025 at 6:27?PM K9HZ via <bill=[email protected]> wrote:
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T41 and K9HZ-KI3P files
¿ªÔÆÌåÓýJust so everyone knows.? Repeating. ? A few months back, I separated the T41 boards and kits¡ from the K9HZ-KI3P boards and kits¡ by placing them is separate GITHUB directories.? I did that because a number of foreign entities were ripping off the GERBERS, making boards, and posting them for sale at exorbitant prices¡ various places that include eBay.? I would then get by the purchaser thinking I would support someone elses PCBs because MY CALL WAS STILL ON THE BOARD [meaning the criminal didn¡¯t even bother removing my call from the board]. ? To END THAT Behavior, ?I moved K9HZ-KI3P proprietary stuff into a separate K9HZ GITHUB Directory¡ removed the GERBERS and some schematics from that directory.? The GERBERS and all other documents for etc. for the T41 boards¡ all versions¡ are still available in the T41 directory on my GITHUB. ? Those who want the K9HZ-KI3P stuff can contact me directly to see if that makes sense.? For example, I have authorized certain people to make boards for my 20W PA in the UK/EU because it¡¯s such a PITA for me to ship stuff there (unless they have a shipper here in the USA who will handle the paperwork).? For those of you in the USA¡ I can¡¯t imagine anyone asking for GERBERS since I can make and sell you the boards much cheaper than you could possibly have them made¡ and any changes you would make to the boards is easier to start over. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: Greg Tilford <gregtilford@...>
Sent: Monday, February 3, 2025 5:03 PM To: bill@... Subject: Re: Private: [AmateurRadioBuilders] LPF Files ? I'm glad I asked.? I've been working exclusively from this URL: Thanks! On 2/3/2025 4:55 PM, Dr. William J. Schmidt wrote:
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Re: T41 receive attenuator working?
¿ªÔÆÌåÓýThe primary RF board (that is the Primary RX and TX) should be set to 0x27 which means that the three address lines A0, A1, and A2 should be set to ¡°111¡± or no shorted jumpers (J15, J16, J17). ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Oliver KI3P via groups.io
Sent: Monday, February 3, 2025 4:49 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 receive attenuator working? ? Bill's right: you do not have the correct address for the MCP23017 chip. The I2C address is set by JP15, JP16 and JP17. ? ? The command "#define RF_MCP23017_ADDR" sets the address that the code looks for -- make sure the address in software matches the address you set using the solder jumpers. |
David Leckie
K9HZ
