Re: Display Noise
Do you have a piece of aluminum you can put behind the display and clip-lead it to ground to test if a shield will work? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
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K9HZ
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#32598
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Display Noise
The upper bands are open this morning - I heard a W2 on 10M. Listening on 15 right now. I can hear the display. It makes a rhythmic grinding noise. Here's something interesting.. ...I put my hand up
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jerry-KF6VB
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#32597
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Re: Display driver kits shortly
The right ones will work¡., but they need to be the thin versions or it¡¯s a struggle. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal
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K9HZ
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#32596
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Re: Display driver kits shortly
If you cant get a reasonable price, how about just sandwiching two 1x5 headers?
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bruce williams
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#32595
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Re: Display driver kits shortly
Thanks for your work on this.? I would like two built versions if your daughter-in-law is willing.? I know you don't like to make money on these but please make sure she charges for her time.
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Terrance Robertson, KN6ZDE
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#32594
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Re: Excessive Noise
Hi Mark, V12 hardware has lots more gain than V11. You may need to reduce the RF Gain to -10 or -15db. See if that helps. Al AC8GY
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Albert Peter
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#32593
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Re: Display driver kits shortly
Yahoo Mail - Email Simplified On Thu, Feb 6, 2025 at 8:06 AM, Tom Clifton via groups.io<kc0vsj@...> wrote: Check Amazon 25 for $7 " Brand Pro" 25-Pack 10P 2.54mm 0.1" Pitch PCB Female
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Tom Clifton
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#32592
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Re: Display driver kits shortly
Check Amazon 25 for $7 " Brand Pro" 25-Pack 10P 2.54mm 0.1" Pitch PCB Female Pin Headers 2x5 Dual Rows 10 Pins Female Sockets to Male Straight PCB DIP, Double Rows PC Board Through-Board Strip
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Tom Clifton
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#32591
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Display driver kits shortly
With one or two exceptions. I'll put together kits for the display driver. I can even have a few of them built for those who want a finish product (my daughter-in-law is a stay at home EE who needs
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K9HZ
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#32590
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Re: SMD Stencil/Reflow solution?
Yeah it doesn¡¯t work very well for Capacitors or Inductors because the test frequency is so low¡ but I like the size¡ Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
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K9HZ
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#32589
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Re: SMD Stencil/Reflow solution?
I ended up buying the FNRISI tweezers also. A note of caution.? Some capacitors read quite low from auto. When I played with the measurement frequency, things were better. -- Regards Phil VK2KKZ
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Phil Taylor
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#32588
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Edited
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Re: TFT_eSPI Library with STM32F4x1 (STM32F401 or STM32F411) boards i.e Blackpill boards and TFT ILI9341 displays
#arduino
#bluepill
#display
#stm32
Dave, I tried the same several years ago. To my understanding the TFT_eSPI library is highly optimized. It uses the DMA mechanism of the STM32F103. The STM32F401 has a different DMA and appropriate
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Joerg DB2OO
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#32587
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Re: TFT_eSPI Library with STM32F4x1 (STM32F401 or STM32F411) boards i.e Blackpill boards and TFT ILI9341 displays
#arduino
#bluepill
#display
#stm32
Thanks - a good suggestion I will put my oscilloscope on the clock lines of both boards and then try the fequencies you suggest - will post soon to say how it goes. 73 Dave GM4NFI
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David Leckie
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#32586
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Re: Excessive Noise
Mark, 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
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K9HZ
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#32585
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Re: SMD Stencil/Reflow solution?
I have used the Atlas LCR for years to sort SMD parts. You can get Tweezer probes off Amazon (I think) and adapt to any LCR meter. Tim W4YN
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Tim
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#32584
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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
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epif18@...
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#32583
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Re: SMD Stencil/Reflow solution?
I 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 -
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K9HZ
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#32582
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Re: SMD Stencil/Reflow solution?
Thanks Greg! I've been looking for something to measure SMD parts. dave, n3ds [email protected]> wrote:
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D Solt
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#32581
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Re: SMD Stencil/Reflow solution?
Thanks! 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
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K9HZ
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#32580
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Re: SMD Stencil/Reflow solution?
I have the FNIRSI tweezers: https://www.amazon.com/dp/B0DBQ4SQGK Pretty good!? Nice to have on the bench during assembly to double-check things. -- 73 Greg KF5N
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Greg KF5N
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#32579
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