The Oojamaflip 2020 – Kit Version


What is the Oojamaflip?

The Oojamaflip is a cartridge port expansion device. It extends the existing cartridge port outwards and provides an additional cartridge port internally – flipped over by 180 degrees.

Kit Build Instructions

Not electrically suitable for Tandy Coco 1 due to it’s cartridge port configuration.

In stock


Please note that this product is NOT electrically suitable for use in a Tandy Coco 1 computer, as pins 1 & 2 are connected together.

The Oojamaflip is a remake of a device manufactured in the late 1980s for the Dragon computer by Richard Sutcliffe of Sutcliffe Electronics. His original boards were very ingenious and well made devices which have stood the test of time.

The Oojamaflip permits the connection of some of the newer peripherals alongside one of the virtual disk solutions, like DragonMMC, DragonDrive or CocoSDC. My main use so far has been for connecting the V9958 Wordpak 2+ board to a Dragon 64 at the same time as the DragonMMC or CocoSDC.

It won’t work for everything – but it does certainly allow more flexibility on the cartridge port.

Please bear the following in mind before ordering:

  • whilst these work, and are of sound quality, they are still considered experimental.
  • you will receive the components to make the board only – any internal fixings to make secure the board or peripherals are your responsibility.
  • Instructions can be downloaded here. In order to reduce package size, none are included in the kit.
  • the board will be supplied with a 2-pin header and a jumper to connect the +5v line. If you wish to add a switch, it is left to you to work out your own solution as regards connectivity etc.
  • The product is not guaranteed to fit inside any Tandy Coco machine, as it has been designed for use inside Dragon computers. It should be functionally compatible with Coco 2 & 3, if not physically compatible.


Additional information

Weight 0.055 kg

New: Other

Mostly new components and PCB. Some old components – fully tested – but due to age, leaded solder will be present.