Creating a new expansion card

[Charley Jones]

I’m considering creating an expansion card to host the ESP01s WiFi module. I was thinking if a serial card can add a port, why can’t I just make that port an ESP01s?

Would anyone have a schematic of a serial card and or a blank module card layout?

Sent from my iPhone 12pm!
Charley Jones, PMP

[da...@hansels.net]

The schematics and PCB layouts for all existing cards are in my GitHub repository:
https://github.com/dhansel/Altair8800-IOBus

The serial card is in subfolder "02-serial-port"

There are also links to the EasyEDA projects for each card in the descriptions for the cards.

[Chris Davis]

Already done.  I just haven't had a chance to fully test it yet.

I'll try to figure out how to share the schematic.

[Charley Jones]

Simply stunned at the incredible body of work.

Didn’t realize all the work had already been done.

Bravo, Dave and Chris.

Such amazing work.

If I can humbly suggest,

Using the Github Method,

Fork and Pull from Dave’s project.

-Dataman in Las Vegas

On Oct 5, 2022, at 8:38 AM, Chris Davis <famousd...@gmail.com> wrote:

Already done.  I just haven't had a chance to fully test it yet.

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[Chris Davis]

Can you fork an EasyEDA project?

[Charley Jones]

Looking at Handel’s Projects:

Schematics and PCB as well as a Gerber file for PCB production are in this directory. 

The project is also available on EasyEDA: https://oshwlab.com/hansel72/iobus-speech-processor-spo256

So I’m guessing that Dave was able to export files and include them in the project folders?

I love all the work that you’ve done,

But I’m considering some streamlining.

Will let you know what I figure out on EasyEDA export.

-dataman

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[Walt Perko]

Hi, 

I really should get back on expanding the dictionary for the SPO256-ALS speech chip, but I've been playing with so many other projects.  

I still think the SpeakBox I made using the SpeakJet chips (I got lots of them) is easier to program for speech and singing and has a clearer voice.  

http://www.brainless.org/Altair/Repository.html

https://www.youtube.com/watch?v=WOF4wjonCKw&ab_channel=WaltPerko

https://www.youtube.com/watch?v=WOF4wjonCKw&ab_channel=WaltPerko

[Charley Jones]

This is where I’m thinking of going with the expansion card.

I have the greatest respect for going old school on the cards,

But heck, we’ve got a lot of power on that ESP8266…

I thought about using a larger version like the 12F, but think an ESP-32 would have more utility.

Yes, it’s going to be a lot of bit shifting.

But I’m figuring 8 pins into esp32, control lines, and 8 pins out.

Based this off the Display Output card, so IN vs OUT I know.

And I’ll need to see if there’s any reserved pins,

And any easier way to move 8 bits and out

The rest gets set up in software….

Address 0-255

Network Credentials.

Based on Dave’s Wifi Work…

Cost of WRROM-32 is about 10$.

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