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Bill, is this what you want?

Take a picture of the driver board in place on the MAIN board please…

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One thing I did that I regret is placing the “U1” symbol at the bottom of the IC.? The little white registration dot for PIN 1 is at the bottom right.

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Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ

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Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

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Owner – Operator

Villa Grand Piton – J68HZ

Soufriere, St. Lucia W.I.

Rent it:

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Moderator: North American QRO Group at Groups.IO.

Moderator: Amateur Radio Builders Group at Groups.IO.

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email:? bill@...

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From: [email protected] <[email protected]> On Behalf Of Robert Luken W3RDL via groups.io
Sent: Monday, March 31, 2025 1:59 PM
To: [email protected]
Subject: Re: [AmateurRadioBuilders] Display driver board

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Completed the build for 5V. No shorts, no opens, and all connections traced and ok. However, with the Board in place, no Display. Checked it twice and made sure that both connectors were fully seated. The system still works without it, so no harm. I'll try again later and check some voltages.

On 3/31/2025 6:36 AM, Oliver KI3P via groups.io wrote:

Here it is:

/g/SoftwareControlledHamRadio/message/33107

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On Sunday, March 30th, 2025 at 2:47 PM, Robert Luken W3RDL via groups.io <now.w3rdl@...> wrote:

Got it yesterday, heading out to the workshop to build it. May have missed your note on 5v/3.3v.

On 3/30/2025 1:55 PM, K9HZ via groups.io wrote:

I sent out five of those new display driver boards about a week ago and only saw posted that Terrance got his working as was able to use a 3-foot long display cable without display-T41 errors/lockups. Anyone else built it yet? I know i didnt publish an assembly manual before i headed out of the country but the thing is pretty simple and i did send out a note re how to make it work on 5v or 3.3v.

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Anyone else? I think its a winner but would like to know so i can get parts and boards ordered to send these out before Hamvention

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Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

Owner – Operator

Villa Grand Piton - J68HZ

Soufriere, St. Lucia W.I.

Rent it:

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email: bill@...

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73

Bob W3RDL

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Virus-free.

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73

Bob W3RDL