Display driver kits shortly
开云体育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 something to do.? She has built stuff for me before). ? One thing… I need some help finding the part in the attached diagram at a reasonable price (like it should be about $0.15 max each)… it’s a 10 pin female socket, 2x5, PCB mount.? Tayda has 2x4 and 2x6 but not 2x5 for whatever reason.? Digikey and Mouser are sky high. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – 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@... ? ? |
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Check Amazon 25 for $7 " Brand Pro"
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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 (2x5-10P-25PK)
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开云体育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 Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – 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 bruce williams via groups.io
Sent: Thursday, February 6, 2025 10:05 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Display driver kits shortly ? If you cant get a reasonable price, how about just sandwiching two 1x5 headers? |
开云体育Well fact is… I’ve already done that… sort of…. For my prototype, I installed a 2x4 socket in a 2x5 holes pattern on the PCB knowing full well that 2 of the 10 holes on the end of the 2x5 connector are N/C. ? However, good news!? I was able to find 10,000 of them surplus for a very low price.? They will be here next week. ? There is another issue I discovered.? The ISO7241 SPI driver chip has two forms… an “M” form and a “C” form.? Here is the difference: ? “The devices with the C suffix (C option) have TTL input thresholds and a noise-filter at the input that prevents transient pulses from being passed to the output of the device. The devices with the M suffix (M option) have CMOS VCC/2 input thresholds and do not have the input noise filter or the additional propagation delay.” ? For electrically operating it won’t make a difference.? What might make a difference is the noise filter in the “C” version and I have not explored that (eg only have used the “M” version.?? I suspect the “C” version may work better for people in high EMI situations.? So I’m gonna make a few of each… send them out to a few folks here with finished radios and see which works best for them.? Unfortunately, I don’t have a high EMI location… so for me testing them may not be a fair comparison. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – 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 bruce williams via groups.io
Sent: Thursday, February 6, 2025 12:11 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Display driver kits shortly ? Or depending on layout can you use the 2x6 and just snip 2 pins.? Is there real estate on the board for that? |
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Those are 2mm, not 2.54mm.? ( I suspect you can find the .1" pitch there as well)
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开云体育Well let’s check that out. ?
? So sometimes better, sometimes worse… but that’s why I use Octopart… to always find the cheapest price on parts. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – 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 Phil Taylor via groups.io
Sent: Friday, February 7, 2025 6:16 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] Display driver kits shortly ? [Edited Message Follows] Bill and all ? I'm surprised more people are not using LCSC for components, they are the sister to JLCPCB. ? Prices are mostly far better than Digi or Mouser, it just takes a little longer for deliveries. I won't enter into tariffs here. In Aus. the govt steals an extra 10% on everything that enters the country anyway. ? I did a search on LCSC for those female headers, there's like 50 to choose from down to 4 or 5c ea at qty 400+, and 9c ea for qty 5+ - filter for "Holes Structure" = 2x5P and "in stock" gives 75 hits. ? Worth checking out comparisons against the other companies... ? ? Regards |
K9HZ
Tom Clifton