H89-USB-Serial order list.

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Norberto Collado

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Dec 4, 2021, 6:21:08 PM12/4/21
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Roland Langfeld rolandl...@gmail.com

Qty: 1

 

Norberto Collado

Qty: 1

 

pbi...@gmail.com

Qty: 1

 

TBD:

Qty: X

s shumaker

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Dec 4, 2021, 11:38:06 PM12/4/21
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Steve S
Qty: 1
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norberto.collado koyado.com

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Dec 8, 2021, 7:39:58 PM12/8/21
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I was checking the files and I see that I did modify such card to V1.2 and website calls for V1.1. As the schematics are not linked to the PCB board as I did it manually, I hope that there are no layout mistakes. It will take time to review for layout mistakes.

I will order 10-pcs once the layout is verified. 

Thanks,
Norberto

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Darrell Pelan

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Dec 8, 2021, 10:03:54 PM12/8/21
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Please add me to the list for a board.

Thanks!

  Darrell

s shumaker

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Dec 8, 2021, 10:30:54 PM12/8/21
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Please add me as well

Steve

pbi...@gmail.com

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Dec 9, 2021, 1:14:08 AM12/9/21
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Great!  Thank you Norberto.

Steven Feinsmith

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Dec 9, 2021, 1:50:34 AM12/9/21
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One for me, thanks
From: se...@googlegroups.com <se...@googlegroups.com> on behalf of pbi...@gmail.com <pbi...@gmail.com>
Sent: Thursday, December 9, 2021 1:14:06 AM
To: se...@googlegroups.com <se...@googlegroups.com>
Subject: RE: [sebhc] Re: H89-USB-Serial order list.
 

Russ Price

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Dec 9, 2021, 8:25:42 AM12/9/21
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Norberto, please add me to the list too. 

Thank you
Russ


norberto.collado koyado.com

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Dec 24, 2021, 1:44:17 AM12/24/21
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I have been working on this board schematics as they were not linked to the board layout and did not want to make a layout mistake by adding some improvements. I just finalized it and will order boards after X-mas is over.

Happy Holidays!

Norberto

Sent: Thursday, December 9, 2021 5:25 AM
To: se...@googlegroups.com <se...@googlegroups.com>
Subject: Re: [sebhc] Re: H89-USB-Serial order list.
 
H89-SERIAL-USB-BOARD.JPG

pbi...@gmail.com

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Dec 24, 2021, 2:17:08 AM12/24/21
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Thank you Norberto.  Seasons Greetings to all, and may you be fortunate enough to arise to a snow-covered landscape on Christmas Day :-}.

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of norberto.collado koyado.com
Sent: Friday, December 24, 2021 1:44 AM
To: se...@googlegroups.com
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

I have been working on this board schematics as they were not linked to the board layout and did not want to make a layout mistake by adding some improvements. I just finalized it and will order boards after X-mas is over.

 

Happy Holidays!

 

Norberto

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of norberto.collado koyado.com


Sent: Wednesday, December 8, 2021 7:40 PM
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Subject: [sebhc] Re: H89-USB-Serial order list.

image001.jpg

Norberto Collado

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Dec 24, 2021, 2:32:27 AM12/24/21
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Thanks and snow is welcome!

 

😊

 


Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Thursday, December 23, 2021 at 11:17 PM
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glenn.f...@gmail.com

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Dec 24, 2021, 9:41:44 AM12/24/21
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So the space for the Sparkfun FT245 breakout board could be eliminated if you like. The board was retired some time ago

https://www.sparkfun.com/products/retired/7841

 

may not be worth the effort though. Your call.

 

Longer version:

 

At the time these boards (this one and the companion H8 board) were designed the group was experimenting with two approaches to USB connectivity. The 24-pin socket to the right holds an FTDI VDIP1 which can do USB host protocol, allowing for flash drives, printers and other devices to connect. In this mode the H8/H89 is the USB “host” with the heavy lifting of the USB protocols all built into the processor on the VDIP1.  I wrote some simple utilities to copy files to/from the flash drive (I’m currently baselining/documenting that code – more soon on that!. Earlier versions of my code are on Norberto’s site http://koyado.com/Heathkit/H-8_USB.html)

 

The FT245 breakout board sported an FT245RL chip which implements the “slave” side of the USB protocol.  In this mode the H8/H89 must be plugged into a host computer.  The host sees the H8/89 essentially the same way it would a disk drive or flash drive. All of the file transfer functionality is implemented in software on the PC side. Dan Emrick and Chris Elmquist did some innovative work with this: http://danemricksite.net/HeathkitProjects.php#USB/H8D

 

The Sparkfun breakout board is no longer available but the VDIP1 is still available (Mouser, Digikey…). FTDI has also come out with a newer version of the VDIP based on their VNC2 chip series, but we’ve seen little compelling reason to change our designs.

 

  • Glenn

 

 

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of norberto.collado koyado.com

Sent: Friday, December 24, 2021 1:44 AM

image001.jpg

Douglas Miller

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Dec 24, 2021, 10:06:15 AM12/24/21
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I thought the FT245R presents a "tty device" to the host PC. It is strictly serial communications, as far as I can tell. What you do with that serial communications is another matter, but the PC sees a COM/TTY device, not storage.

Steven Feinsmith

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Dec 24, 2021, 11:24:38 AM12/24/21
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That is great news for the H88/H89/Z90 to keep going. Can you add my name to order one piece of board?

Seasons Greetings to all and be SAFE!

Steven

To view this discussion on the web visit https://groups.google.com/d/msgid/sebhc/BN7PR01MB3844B9B33283B2D991A90580F77F9%40BN7PR01MB3844.prod.exchangelabs.com.

Terry Gulczynski

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Dec 24, 2021, 2:29:17 PM12/24/21
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Terry Gulczynski
Qty: 2


Thx Norberto!


On 12/4/2021 6:21 PM, Norberto Collado wrote:
> Roland Langfeld rolandl...@gmail.com <mailto:rolandl...@gmail.com>
>
> Qty: 1
>
> Norberto Collado
>
> Qty: 1
>
> pbi...@gmail.com <mailto:pbi...@gmail.com>
>
> Qty: 1
>
> TBD:
>
> Qty: X
>
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Norberto Collado

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Dec 24, 2021, 3:41:23 PM12/24/21
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You can still buy such board in Florida from:

 

https://www.kr4.us/breakout-board-for-ft245rl-usb-to-fifo.html

 

Norberto

Douglas Miller

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Dec 24, 2021, 4:02:08 PM12/24/21
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I was planning to add support for the FT245R as another serial port, so that we don't lose the "modem" port at 330Q when the VDIP1 is installed. But, it seems we don't consistently have an FT245R with every VDIP1 (i.e. new Z80 CPU boards only have VDIP1) so it didn't make as much sense to do that. I'm not suggesting any changes about that, but it was a use I considered, briefly. The FT245R looks nothing like an INS8250, but it is pretty simple and so could be put into drivers as a one-off. Given the INS8250 has a "scratch pad" register, one could possibly even auto-detect whether 330Q is an INS8250 or FT245R.

But if the part is obsolete, it may make even less sense. Of course, just because SparkFun no longer makes it doesn't mean FTDI no longer makes it.

Norberto Collado

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Dec 24, 2021, 9:03:25 PM12/24/21
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For the H8, should we add the FT245R on a tiny board? Or should I added it to the single H17 controller which is almost done? The single H17 controller has the VDIP1 already installed.

 

Thanks,

Norberto Collado

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Dec 24, 2021, 9:09:47 PM12/24/21
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I just found out that this part is out of stock. So, it is not available. I think it makes sense to add a tiny board with surface mount parts if we agree that is needed.

 

Graphical user interface, text, application Description automatically generated

Norberto

Norberto Collado

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Dec 24, 2021, 9:20:54 PM12/24/21
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Digikey has 0 in stock. Let’s put this board to rest. I will take it out from the H89-Serial-USB board unless there is objection.

 

Norby

pbi...@gmail.com

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Dec 25, 2021, 2:05:19 AM12/25/21
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Seems to be in-stock at https://www.canakit.com/breakout-board-for-ft245rl-usb-to-fifo-bob-07841.html

 

Alternatively, replace the current DIP-style footprint with the DIL end-connector style that’s readily available on eBay.

Example: https://www.ebay.com/itm/384504988953

 

Also available at, e.g.,: https://pmdway.com/products/ft245-usb-to-parallel-fifo-breakout-board

 

My vote goes to keeping the FT245RL but with the DIL end-connector footprint.  The pin-out is specified on the PCB:

 

image003.jpg
image004.png
image005.png

pbi...@gmail.com

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Dec 25, 2021, 2:19:06 AM12/25/21
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Example connector: https://www.taydaelectronics.com/2x10-pin-2-54mm-dounle-row-right-angle-female-pin-header.html

Sparkfun footprint = 1.5x0.92" = 38mm x 24mm

 

BOB footprint is 46mm x 30mm.  Extend length for the right-angle DIL socket.

 

So it’s not a slam-dunk to adopt the replacement board from the perspective of board layout.

 

From: pbi...@gmail.com
Sent: Saturday, December 25, 2021 2:05 AM
To: se...@googlegroups.com
Subject: RE: [sebhc] Re: H89-USB-Serial order list.

 

 

Alternatively, replace the current DIP-style footprint with the DIL end-connector style that’s readily available on eBay.

Example: https://www.ebay.com/itm/384504988953

 

Also available at, e.g.,: https://pmdway.com/products/ft245-usb-to-parallel-fifo-breakout-board

 

My vote goes to keeping the FT245RL but with the DIL end-connector footprint.  The pin-out is specified on the PCB:

 

 

-----

image001.png
image002.png
image003.jpg
image004.png

Norberto Collado

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Dec 25, 2021, 2:45:42 AM12/25/21
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I ordered one from pmdway as I need to measure board on the pcb along with the VDIP1.

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Dan Emrick

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Dec 25, 2021, 11:46:24 AM12/25/21
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Not sure if I really have a place in this discussion given that I do not have an H8.  Even so, I use the FT245 capability of the H89 USB-Serial board in my H89 and my H89-SBC.  Of course, I'm just a little prejudiced having worked with Chris and others on the HDOS driver early on.  The PC side is a custom program that makes H8D images available (currently up to 4) for mounting via the FT245 interface just as a spinning floppy would be.  I use Linux but experimented in the past with a version for  MS Windows.  It's written with the Qt IDE.

My two cents:  I support Paul's recommendation to keep the capability even if it requires a modification to handle the different B/O board configuration (which I did use in early H89 prototypes).

Before I forget, thank you, Norberto, for all that you've done and continue to do to preserve and enhance these beloved old boxes and our enjoyment of them.

Merry Christmas and Happy Holidays to all.
Dan

Steven Feinsmith

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Dec 25, 2021, 3:25:55 PM12/25/21
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I suggest you put it on the shelf for now. There are serious parts shortages not only for chips but many other components. The problem is due to pandemic incidents. A huge mistake in the USA is to allow companies to use overseas for cheap labor. Now, the US has to restore local electronic businesses which may take a few years.

Steven

To view this discussion on the web visit https://groups.google.com/d/msgid/sebhc/B4519360-9694-449C-9028-6792B7696A21%40koyado.com.

Norberto Collado

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Dec 25, 2021, 6:18:57 PM12/25/21
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Thanks Dan and Happy Holidays to all as well!

 

Norberto

 

From: "se...@googlegroups.com" <se...@googlegroups.com> on behalf of Dan Emrick <dsem...@gmail.com>
Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Saturday, December 25, 2021 at 8:46 AM
To: "se...@googlegroups.com" <se...@googlegroups.com>
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

Not sure if I really have a place in this discussion given that I do not have an H8.  Even so, I use the FT245 capability of the H89 USB-Serial board in my H89 and my H89-SBC.  Of course, I'm just a little prejudiced having worked with Chris and others on the HDOS driver early on.  The PC side is a custom program that makes H8D images available (currently up to 4) for mounting via the FT245 interface just as a spinning floppy would be.  I use Linux but experimented in the past with a version for  MS Windows.  It's written with the Qt IDE.

 

My two cents:  I support Paul's recommendation to keep the capability even if it requires a modification to handle the different B/O board configuration (which I did use in early H89 prototypes).

 

Before I forget, thank you, Norberto, for all that you've done and continue to do to preserve and enhance these beloved old boxes and our enjoyment of them.

 

Merry Christmas and Happy Holidays to all.

Dan

 

On Saturday, December 25, 2021 at 2:45:42 AM UTC-5 Norby wrote:

I ordered one from pmdway as I need to measure board on the pcb along with the VDIP1.

 

Thanks,

Norberto

 

 

From: "se...@googlegroups.com" <se...@googlegroups.com> on behalf of <pbi...@gmail.com>
Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Friday, December 24, 2021 at 11:18 PM
To: "se...@googlegroups.com" <se...@googlegroups.com>
Subject: RE: [sebhc] Re: H89-USB-Serial order list.

 

Example connector: https://www.taydaelectronics.com/2x10-pin-2-54mm-dounle-row-right-angle-female-pin-header.html

Image removed by sender.

Sparkfun footprint = 1.5x0.92" = 38mm x 24mm

 

BOB footprint is 46mm x 30mm.  Extend length for the right-angle DIL socket.

 

So it’s not a slam-dunk to adopt the replacement board from the perspective of board layout.

 

From: pbi...@gmail.com
Sent: Saturday, December 25, 2021 2:05 AM
To: se...@googlegroups.com
Subject: RE: [sebhc] Re: H89-USB-Serial order list.

 

Seems to be in-stock at https://www.canakit.com/breakout-board-for-ft245rl-usb-to-fifo-bob-07841.html

 

Alternatively, replace the current DIP-style footprint with the DIL end-connector style that’s readily available on eBay.

Example: https://www.ebay.com/itm/384504988953

 

Also available at, e.g.,: https://pmdway.com/products/ft245-usb-to-parallel-fifo-breakout-board

 

My vote goes to keeping the FT245RL but with the DIL end-connector footprint.  The pin-out is specified on the PCB:

 

Image removed by sender.

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Norberto Collado
Sent: Friday, December 24, 2021 9:21 PM
To: se...@googlegroups.com
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

Digikey has 0 in stock. Let’s put this board to rest. I will take it out from the H89-Serial-USB board unless there is objection.

 

Norby

 

From: "se...@googlegroups.com" <se...@googlegroups.com> on behalf of Norberto Collado <norberto...@koyado.com>
Reply-To: "se...@googlegroups.com" <se...@googlegroups.com>
Date: Friday, December 24, 2021 at 6:09 PM
To: "se...@googlegroups.com" <se...@googlegroups.com>
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

I just found out that this part is out of stock. So, it is not available. I think it makes sense to add a tiny board with surface mount parts if we agree that is needed.

 

Image removed by sender. Graphical user interface, text, application Description automatically generated

Image removed by sender.

 

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Norberto Collado

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Dec 25, 2021, 8:05:38 PM12/25/21
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Also, I’m going to move the logic around so that I can get more free real state by using the same layout as in the MMS Corvus board. See attached picture.

 

The USART’s on the right and the VDIP1 and RT245R on the left.

 

Thanks,

Norberto

 

A close-up of a circuit board Description automatically generated with medium confidence

norberto.collado koyado.com

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Dec 29, 2021, 12:50:18 AM12/29/21
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Almost done with the board updates. I cannot finalize until I get the FT245R breakout board to verify placement along with the VDIP1 and secondary USB port.


Sent: Saturday, December 25, 2021 5:05 PM

pbi...@gmail.com

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Dec 29, 2021, 12:59:44 AM12/29/21
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Are the cable-tie holes misaligned?  Maybe add a couple more?

image002.jpg
image003.jpg

Norberto Collado

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Dec 29, 2021, 12:36:20 PM12/29/21
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I will fixed that once I get the FT245R.

 

A picture containing text, scoreboard Description automatically generated

Mike Mills

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Dec 29, 2021, 12:42:49 PM12/29/21
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Can i get added to the list for a USB serial card please...

Thanks

Mike

Mike Mills

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Dec 29, 2021, 12:42:49 PM12/29/21
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I think i replied a moment ago about getting on the order list can my name be added for a card please.

I replied to a post onteh 4 dec, whichis quite old, and just want to ensure that im on the list, sorry for the duplication.

Regards

Mike

norberto.collado koyado.com

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Dec 30, 2021, 12:44:02 AM12/30/21
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I will submit a list after the holidays! 🙂
From: se...@googlegroups.com <se...@googlegroups.com> on behalf of Mike Mills <djmik...@gmail.com>
Sent: Wednesday, December 29, 2021 2:08 AM
To: SEBHC <se...@googlegroups.com>

norberto.collado koyado.com

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Jan 10, 2022, 8:37:07 PM (7 days ago) Jan 10
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I did receive the FT245R breakout board. It took about 11 days to get. I will play with the parts placement to figure out cable and parts best location. I'm still waiting for the 2x 10 pin connector which I forgot to order last month. It should be here within the two weeks.  Once I get the 2x 10 pin female connector, I should be able to order some boards to check the layout and board operations. I do not expect any issues as it is based on previous board schematics.

I will work with Todd to fulfill the needs for those that requested such board once I get a fully operational board.

Norberto
From: se...@googlegroups.com <se...@googlegroups.com> on behalf of norberto.collado koyado.com <norberto...@koyado.com>
Sent: Tuesday, December 28, 2021 9:50 PM

pjoc...@gmail.com

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Jan 11, 2022, 1:23:33 AM (7 days ago) Jan 11
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Hello Norberto,

  I am interested in purchasing this H89 Serial Board when it is placed into production. As a side note, I am really impressed with your work and dedication.

Thanks,

 

Pat OConnor

Sent from Mail for Windows

 

From: norberto.collado koyado.com
Sent: Monday, January 10, 2022 8:37 PM
To: se...@googlegroups.com
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

I did receive the FT245R breakout board. It took about 11 days to get. I will play with the parts placement to figure out cable and parts best location. I'm still waiting for the 2x 10 pin connector which I forgot to order last month. It should be here within the two weeks.  Once I get the 2x 10 pin female connector, I should be able to order some boards to check the layout and board operations. I do not expect any issues as it is based on previous board schematics.

 

I will work with Todd to fulfill the needs for those that requested such board once I get a fully operational board.

 

Norberto

From: se...@googlegroups.com <se...@googlegroups.com> on behalf of norberto.collado koyado.com <norberto...@koyado.com>
Sent: Tuesday, December 28, 2021 9:50 PM
To: se...@googlegroups.com <se...@googlegroups.com>
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

Almost done with the board updates. I cannot finalize until I get the FT245R breakout board to verify placement along with the VDIP1 and secondary USB port.





From: se...@googlegroups.com <se...@googlegroups.com> on behalf of Norberto Collado <norberto...@koyado.com>
Sent: Saturday, December 25, 2021 5:05 PM
To: se...@googlegroups.com <se...@googlegroups.com>
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

Also, I’m going to move the logic around so that I can get more free real state by using the same layout as in the MMS Corvus board. See attached picture.

 

The USART’s on the right and the VDIP1 and RT245R on the left.

So it’s not a slam-dunk to adopt the replacement board from the perspective of board layout.

 

From: pbi...@gmail.com
Sent: Saturday, December 25, 2021 2:05 AM
To: se...@googlegroups.com
Subject: RE: [sebhc] Re: H89-USB-Serial order list.

 

Seems to be in-stock at https://www.canakit.com/breakout-board-for-ft245rl-usb-to-fifo-bob-07841.html

 

Alternatively, replace the current DIP-style footprint with the DIL end-connector style that’s readily available on eBay.

Example: https://www.ebay.com/itm/384504988953

 

Also available at, e.g.,: https://pmdway.com/products/ft245-usb-to-parallel-fifo-breakout-board

 

My vote goes to keeping the FT245RL but with the DIL end-connector footprint.  The pin-out is specified on the PCB:

 

Image removed by sender.

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Norberto Collado
Sent: Friday, December 24, 2021 9:21 PM
To: se...@googlegroups.com
Subject: Re: [sebhc] Re: H89-USB-Serial order list.

 

Digikey has 0 in stock. Let’s put this board to rest. I will take it out from the H89-Serial-USB board unless there is objection.

At the time these boards (this one and the companion H8 board) were designed the group was experimenting with two approaches to USB connectivity. The 24-pin socket to the right holds an FTDI VDIP1 which can do USB host protocol, allowing for flash drives, printers and other devices to connect. In this mode the H8/H89 is the USB “host†with the heavy lifting of the USB protocols all built into the processor on the VDIP1.  I wrote some simple utilities to copy files to/from the flash drive (I’m currently baselining/documenting that code – more soon on that!. Earlier versions of my code are on Norberto’s site http://koyado.com/Heathkit/H-8_USB.html)

 

The FT245 breakout board sported an FT245RL chip which implements the “slave†side of the USB protocol.  In this mode the H8/H89 must be plugged into a host computer.  The host sees the H8/89 essentially the same way it would a disk drive or flash drive. All of the file transfer functionality is implemented in software on the PC side. Dan Emrick and Chris Elmquist did some innovative work with this: http://danemricksite.net/HeathkitProjects.php#USB/H8D

 

The Sparkfun breakout board is no longer available but the VDIP1 is still available (Mouser, Digikey…). FTDI has also come out with a newer version of the VDIP based on their VNC2 chip series, but we’ve seen little compelling reason to change our designs.

 

-----

Norberto Collado

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Jan 11, 2022, 2:33:46 AM (7 days ago) Jan 11
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Thanks Pat!

 

Did some measurements and for now it looks like this until I get the 2x10 pin female connector. Also I added the 3.68MHz osc to run the serial ports at a higher baud rate as an option.

 

Diagram, schematic Description automatically generated

 

 

Norberto

Glenn Roberts

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Jan 11, 2022, 5:56:00 AM (7 days ago) Jan 11
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Great to see discussion/interest in the h89. We’ve been talking a lot about h8 in recent months…


Still not sure if we’ve got any use cases lined up for the ft245 when we get it? We could dust off Dan Emrick’s file sharing software for Linux. Not sure where that lives or the state of it, or level of interest… Douglas was originally interested in using the 245 as a high speed serial port I believe. That would take some software work to accomplish.

I’m away from my systems (helping my son get set up in new apartment) but will be getting the software/documentation for the VDIP side done as soon as I can when I return…

Sent from my iPad

On Jan 11, 2022, at 2:33 AM, Norberto Collado <norberto...@koyado.com> wrote:



Douglas Miller

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Jan 11, 2022, 7:58:02 AM (7 days ago) Jan 11
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I did a CP/NET client for the FT245R, although I'm not sure if anyone has tried it out on a real H8/H89.

Norberto and I also kicked around an idea for a "major" expansion to the H89, picture attached. We didn't get any further than this drawing (based on some clearance experiments by Norberto), but it is looking like it would work.

H89-addon-mezz2.png

norberto.collado koyado.com

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Jan 11, 2022, 8:25:15 PM (6 days ago) Jan 11
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Douglas is in the "To-Do-List"; H89_Mezzanine. I worked on it for a while on the mechanical pins aligments, clearance, and then I switched back to the H8. It will be a great board addition to the H89.

Norberto

Sent: Tuesday, January 11, 2022 4:57 AM

Norberto Collado

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Jan 14, 2022, 2:53:21 AM (4 days ago) Jan 14
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Received today the 2x10 pin female connector and everything looked fine until I put the FT245R board on a real wire-wrap board. This board was design to be attached to the outside of the board and not on top of the board. The solder underneath the board along with the pins for the 2x10 pin male header, will force the board to lifted at an angle when inserted on a wire-wrap board. The solution will be to cut a hole underneath the board to released such pressure.

 

Here are some photos which described better the issue. I’m open to other ideas to fix this issue. ☹

 

Looks good so far! 😊

Diagram, schematic Description automatically generated

 

Wrong position:☹

A close-up of a circuit board Description automatically generated with medium confidence

 

Correct position: 😊

A picture containing text, electronics, circuit Description automatically generated

 

A picture containing electronics Description automatically generated

 

 

Solution: Cut a hole on top of the board. 😊

 

Diagram Description automatically generated

 

 

Thanks,

Norberto

Glenn Roberts

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Jan 14, 2022, 5:01:40 AM (4 days ago) Jan 14
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Hole in the board seems rather drastic. Are you using a high profile right angle connector? What dimension would you need to make it work? What is your source for the ft245 breakout board? Is it available without the pre-attached header? A straight header would be better for this application.

Sent from my iPad

On Jan 14, 2022, at 2:53 AM, Norberto Collado <norberto...@koyado.com> wrote:



Douglas Miller

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Jan 14, 2022, 6:32:11 AM (4 days ago) Jan 14
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Not to kick up any more dust on the matter, but there is this module:

https://www.mouser.com/ProductDetail/FTDI/UM245R?qs=Xb8IjHhkxj4TWAlYgWlsig%3D%3D

Which is a more conventional mount, albeit more expensive (2.5x).

As Glenn said, might be worth contacting WaveShare and see if they can supply without the header mounted. That was a nice thing about AdaFruit, at least in my experience - they ship their modules with the header separate.

pbi...@gmail.com

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Jan 14, 2022, 7:17:25 AM (4 days ago) Jan 14
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Can you first use a 2x10 straight DIL header (or two SIP headers side-by-side), and then plug the right-angle 2x10 DIL connector into that?

image001.jpg
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Glenn Roberts

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Jan 14, 2022, 7:28:53 AM (4 days ago) Jan 14
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The FTDI board might also have a bit more longevity.  I wonder if the WaveShare board will disappear after a year just like the Sparkfun one did?  For that matter, will WaveShare itself be around long term? The FTDI VDIP1 board has been available for a very long time now…

 

I know we’ve mostly stuck to through-hole construction on our boards, but another option could be to surface mount the ft245 chip on the board… the Rev 1.1 USB board for the H8 has this option

http://koyado.com/Heathkit/H-8_USB_files/H8-USB%20CONTROLLER%20V1_0-1.pdf

image001.jpg
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image004.png
image005.jpg
image010.png
image011.png
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image013.png

Douglas Miller

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Jan 14, 2022, 7:42:40 AM (4 days ago) Jan 14
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I also noticed there is a QFN package for the chip, so we could use a socket I think. But, digiKey didn't have the chips in stock - either package.

Norby

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Jan 14, 2022, 1:02:40 PM (4 days ago) Jan 14
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Thanks Douglas! I’m going with a rectangular hole on the board. Next steps is to figure out on how to develop a rectangular hole of such size. I have to consult with my friend Google.

Sent from my iPhone

On Jan 14, 2022, at 4:42 AM, Douglas Miller <durga...@gmail.com> wrote:



s shumaker

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Jan 14, 2022, 1:58:35 PM (4 days ago) Jan 14
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