[Coco] CoCo 512K EEPROM+External Controller Walkthrough (Final)

[Chad H]

Ed, I assembled and tested your EEPROM pak board and controller, no problems.  Everything is great. I used them to update the photos on my site.  Let me know which 512K chip you want and if you need it pre-programmed a certain way.

You can contact me off list.

- Chad H
http://sites.google.com/site/cbhlab101/


-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Zippster
Sent: Friday, November 20, 2015 9:56 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] CoCo 512K EEPROM+External Controller Walkthrough (Final)

Sounds pretty reasonable to me.  :)

If you’re considering a medium run with OSH Park, PCBCart is worth a look.
They are who I’ve been using for the SDC, RGB2VGA, composite boards, etc.
For runs of 20 or more, you’ll likely come out ahead with them, and be able to get real plated edge connectors (instead of ENIG finish) for the board.  No “nibbles” around the board edge to file off either.

Just a thought.

- Ed


> On Nov 20, 2015, at 8:56 PM, Chad H <chadbh74 at hotmail.com> wrote:

> P.S.  As far as prices for the current boards I'm looking at the following numbers right now ...
> 
> $25.00 - 512K Cartridge board (Includes 1 x 29F040 or 28SF040, 
> programming)
> $25.00 - External Controller (Include 3ft cable, Blue backlit 16 x 2 
> character LCD, programming)
> $4.00 - FT-232 MicroUSB (includes 1.5 foot MicroUSB cable and adapter 
> for between the FT-232 and controller)
> 
> ** Shipping is free to the 48 continental U.S. states.
> 
> For those who would want one of the Cartridge boards WITHOUT the external interface (No connector or IC's), I will discount $10 down to $15.00 for the board.  This will be a jumper-only board.   The parts could always be installed at a later time.
> 
> To be honest, I'm not particularly excited with these prices.  $50 bucks for this setup sounds a little pricy to me when I try to put my foot in the other shoe so to speak.  However, with cost of the PCB's, parts and time spent with assembly it seems more reasonable.  If there develops a significant demand for these I will do a medium run with OSHpark to get the PCB prices lower.  I'm also starting to source more and more of the IC's and components from china wholesalers. A year ago I ordered a spool of 5000 x 1K ohm SMD resistors for $12.00 thinking it was cheap, why not, even though I would never use them all.  Now, I'm finding more and more need for them with projects like this and buying in bulk becoming more appealing.
> 
> For those that are big hardware tinkerers themselves, particularly those that are good with soldering/SMD rework, I could sell blank boards at cost (+shipping) and provide bill of materials to build them out yourselves.  We in this community all have different talents, ideas and desired and I'm all about having as many options as possible with new hardware/software.  I'm certainly willing to provide such options where practical.
> 
> - Chad H
> http://sites.google.com/site/cbhlab101/


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