It is quite rare in the Z88 world when many things happen at
the same time, but they have.
Here is a variant of the Card Case allowing access to the PCB. Not required for the usual Z88 user.
Card Case History
When Cambridge Computer manufactured the Card Case, they
used a mechanical press to squash the top of the 4 plastic pins that held it
This was a cost-effective way, but not necessarily the best
The Flash cards supplied later used small self tapping screws.
worked well but occasionally failed leading to “The external card problem.”
an enterprising Z88 User designed a stronger case using
nuts and machine screws. This used the existing Cambridge Computer top part of
the case. This was then followed by several designs.
Card Case Mk 1
The 2 machine screws here are just at the connector end replacing 2 of the pins,
preventing the card from coming apart.
We can supply the following for the older MK 1 design upon request.
- Cambridge Computer Card Tops
- 2 machine screws
- 2 Nuts
Card Case Mk 2
picture of the latest 4 machine screw design, which is all printed by the 3D
printer. This is stronger and has now replaced the 2 machine screw design.
This ensures that the 38 connections are
made giving greater reliability. Initial results from users are
encouraging. If you are experiencing this issue, consider changing the
Cambridge Computer cards two chamfered corners need filing down by
about 1mm to allow the cards to fit in the new case. This won't
compromise any of the circuit. The original metal labels should be
carefully peeled off and glued to the new case.
We are indebted to Martin Roberts for the 3D Printer Design that he did for the Community.
3D Printer Details
If you have a 3D printer, download the program and designs from the Z88 Internet Links. on the right - under OpenSCAD and Z88 3D Printer Card Details. This is his original design not the improved design shown on this page.
Card Case and Machine ScrewsNote:
The case is supplied as two parts of the new case connected with four
machine screws. The four nuts are embedded in the bottom half.
This picture shows the two halves which are then screwed together with the PCB (not supplied) in the middle.
If you print your own, we can supply the following:
(Prices in the table below).
Replace Card Case
Alternatively, we are offering a service to replace the case
on your Z88 cards be it
Return your card today with £30 which includes UK Royal
Mail Signed For® 2nd Class & VAT
- Flash and update OZ software
- Or EPROM Cards
|On the other hand, if you are not experiencing problems, you
These have the latest case and software fitted
as standard. Erase your existing flash card and use it to store extra files.
users wish to use the 1M 512K PCB to use for their own Z88 project.
These are suppled as a bare board with a copy of the circuit. Surface
mount components can be difficult to solder.