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Turtles are Here

Welcome to

(Latest Update: 31 December 2017)

Please Note:  The layout for this site is about to be changed with the intention of simplifying navigation.  In essence the site has become too linear over time (there are just too many options in the left hand navigation bar).   While all of the site content will be preserved some external links may become corrupted.  If an external link stops working then please head to in the first instance.

The latest additions to this site include a weld head for making battery tabs, making calcium blocks for turtles, refurbishment and repair of an M73 compass,  my experiments with thermal adhesive, Oxy-MAPP oxygen cylinder adaptor, some lathe maintenance, and sand casting.  A number of these projects remain work in progress so please check back from time to time.

I have recently revised the MakerGear M2 3D printer pages to include some printer upgrades, and to to make the information more accessible.

I still get quite a few contacts for the complete schematic of my CD Welder.  The basic design is fully described on the CD welder pages (with the exception of the main power supply and the microcontroller board)..Amigo1

My major project remains the commercialisation of the Amigo, a navigation aid for recreational SCUBA diving.  See the image on the right.

Some of this work was originally posted here but, as the project has developed from an excuse to go SCUBA diving into a commercial reality, the original material has been revised and reposted at

The Amigo is still in the final stages of commercialization while I  earn the capital to complete the project.  This has been an expensive and somewhat frustrating exercise beset by unavoidable delays and the occasional opportunistic diversion.

If you’ve got any questions, suggestions, or critical comments I’d be very pleased to here from you.  I will respond to every enquiry.  Please click here to email me.



Dive Photo Galleries

Pentax 750Z Underwater Housing

 Pentax A20 Underwater Housing

Data Logger

Making Printed Circuit Boards

Galapagos Photos

CD Welder

PCB Optical Drill

Temperature Controller

NAD C 520 LCD Backlight Repair

Kenwood Tape Deck Repair

Cassette Tape to Computer

Reflow Oven Controller

Designed to Fail

MakerGear M2 3D Printer

Coil Winders

Changing a Light Bulb?

Squash Racquet Repair

Liquid Metal - Sand Casting

Oxy-MAPP Cylinder Adaptor

Lathe Maintenance

Thermal Adhesive

M73 Compass Repair

Calcium Block for Turtles

Infinite R Networks

LCD Graphic Character Display


[Turtles are Here] [Site Map] [750Z Housing] [Construction] [A20 Housing] [Drawings] [Galapagos] [Data Logger] [Making PCBs] [PCB Drill] [CD Welder] [Current Monitor] [Proportional Controller] [Lock In Amplifier] [NAD C 520] [Kenwood Tape Deck] [Tape to Computer] [Reflow Oven] [Designed to Fail] [M2 3D Printer] [Coil Winders] [Changing a Light Bulb] [Squash Racquet Repair] [Dive Photos] [Sand Casting] [Oxy-MAPP] [Lathe Maintenance] [Thermal Adhesive] [M73 Compass Repair] [Calcium Block for Turtles] [Infinite R Network] [ST7820 LCD] [Links] [Contact Me]