Peripheral Hacks

Some synchronous nibble captures

Submitted by S.Elliott on August 29, 2024 - 1:25pm

This blogpost is a quick data dump of raw Disk II data, captured synchronously at intervals of exactly 8 CPU cycles.

Picture 1: Synchronous capture of 10-bit sync nibbles and 8-bit address-mark nibbles

Tags: 
diskOscope hardware

Upgrade the Disk II controller with shrouded headers

Submitted by S.Elliott on March 21, 2023 - 12:45am
Apple chose bare headers for the disk connectors on the Disk II controller, which make it notoriously easy to connect the drive cable incorrectly.

Jameco's "Shrouded Box Header 20 Pin 2316R-20G" makes an ideal replacement.

Tags: 
hardware

EPROM data rot in my EPROM programmer's EPROM

Submitted by S.Elliott on July 3, 2022 - 10:24pm

I recently discovered that some of my custom EPROMS from the 80's and 90's are exhibiting problems due to EPROM bit rot, which falls under the general category of data degredation...or 'data rot'.  Bit rot causes any programmed 0 bits to revert back to 1 bits, their un-programmed state.  The chip isn't actually harmed, it just loses its prorgamming. 

Tags: 
data rot
EPROM

(2022) - New Project ideas

Submitted by apple2forever on March 11, 2022 - 10:29am

I'm aiming a little bit lower for my 2022 projects:

keyboard interfaces cards for vintage pre-MIDI music systems, the Passport Designs soundchaser and the Alpha Syntauri system

I have an existing passport interface card - acquired in early 2022 - which I can clone. Still hoping to find a soundchaser MX card as well. 

Tags: 
soundchaser
alpha syntauri

Cracking Open the Time Capsule

Submitted by Dr. Webster on January 30, 2009 - 9:48pm

IMAGE(/files/styles/large/public/tc1.jpg)
An in-depth look at Apple's Time Capsule: how to get more room for backups, and a cooler, quieter-running Time Capsule with a single upgrade.

Content Type: 
Peripheral Hacks
Hardware Guides
Computer Type: 
Apple, Other
Manufacturer: 
Apple

Fixing the Epson 'Prints Blank Pages' Problem

Submitted by Dr. Webster on March 18, 2006 - 11:58pm

IMAGE(/files/styles/large/public/epson2.jpg)
A number of Epson inkjet printers suffer from a problem where they eventually print nothing but blank pages, even with new ink tanks. Here's a way to try to fix the problem.

Content Type: 
Peripheral Hacks
Guides
Hardware Guides
Computer Type: 
Other Technology

SportPod

Submitted by Dr. Webster on December 16, 2005 - 8:06pm

IMAGE(/files/styles/large/public/sportpod3.jpg)
The SportPod is a custom, weatherproof iPod case made from an old sports radio. Learn how to build your own.

Content Type: 
Hacks
Peripheral Hacks
Computer Type: 
Apple, Other
Other Technology

Clear AirPort Base Station

Submitted by Dr. Webster on July 17, 2005 - 4:46pm

IMAGE(/files/styles/large/public/clearport-8396_640x480.jpg)
How to create your own clear AirPort Base Station.

Content Type: 
Peripheral Hacks
Computer Type: 
Apple, Other
Manufacturer: 
Apple

Hard drive sandwich

Submitted by eeun on September 20, 2004 - 9:54am

IMAGE(/files/styles/large/public/images//sandwich1-4626_0.jpg)
Using aluminum bar stock, eeun puts the squeeze on hard drive noise!

Content Type: 
Peripheral Hacks
Computer Type: 
Power Macintosh
Manufacturer: 
Apple

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