Exploring Rife, Krikotronic, Microcurrent generators, battery capacity testing,
bicycle disc brakes, colloidal silver generators, and a backpack  highbanker (gold sluice) with pump.
Kricotronic pioneered an electronic ignition system for the rimfire. The aim is to improve the design using modern components. The prototype uses a voltage generator salvaged from disposable camera. The original concept was relatively crude. No consideration was given to energy variation according to ambient temperature, and recharge rate was limited by cell internal resistance.
A better system would incorporate a stamp sized Arduino calculating a pulse to suit temperature and primer type, and would give opportunity to incorporate various safety interlocks, battery indications and pre-heat. Modern high rate li-ion cells can provide much quicker recharge times than previously available.
The prototype uses a tungsten electrode, but a design incorporating an IR burning laser is in the pipeline. Although that may not be able to provide the temperature (>275 f) required fast enough for ignition purposes, a little pre-heat may enable the discharge pulse to be reduced, giving quicker recycle times.
Rife research is full of quackery, and the sellers of Rife "machines" fail to declare that Rife said that the wrong frequencies would quicken the cancer cell's growth, not kill them. All I wish to do is find if some common pathogens can be killed by a frequency, as opposed to a heating, response. The genius of Rife's microscope cannot be doubted, as his early pictures of a virus pre-dated all electron microscopes.
Project: Investigate Rife's methods of killing pathogens in a laboratory situation
Status:  27MHz Transmitter, matcher, antennas built. Warm stage microscope, slide edge illuminators and camera finally setup.
The picture tells the story. Only try this on a solid old steel frame, and pay careful attention to providing safety lock tabs to prevent the brake torque reaction swinging the axle from the frame, especially on the front. Believe me, it will! Note the tab lock in the photos. Note, you will need to buy new, dished wheels to get the required frame clearance. Because this is a classic 1980's Miyata Valley Runner frame, the front used a clamp to avoid welding destroying its value. Rear is bolted at lower end, torque block transfers torque to frame at top. Great stopping for a 35lb classic monster!
Project: Update a 1980's bicycle frame to disc brakes.
Status. Complete, and a success!
The Holy Grail of inventors is to invent the better mousetrap. Wardie's workshop succeeded where others failed! Presented without comment!
(Concept prototype only, NOT a firearm! Does not shoot!)
Project: Build a better mousetrap.
Status. Complete
Robert Becker in "The Body Electric" used microcurrents to speed healing of broken limbs. Experiments have also been done in using microcurrents to infuse silver ions into wounds to enhance healing. This project was memorable because the parts were easily obtained, and the circuit selected worked perfectly  as per the app. notes first up! Worksheet 59 in RF4.xlsm does the calculations for you
Project: Constant microcurrent generator
Status. Complete
Right: Circuit
Lower: Lab Journal shows I used a 0.68v diode drop as a V ref, would be replaced by a precision ref. in use.
Lower left: As built into a utility case
The prototype with tungsten electrode resting against the rim of an empty  case. The heavy currents destroyed a handful of SCR's until a suitable one was found.
Ported to VBA from DOS to use the convenience of Excel. It uses the LPT1 port to control four relays, which switch combinations of resistors to get the required discharge rate. Port access is via  io.dll. The universal battery mount uses a pair of magnifying glass mounts, and spring loaded PCB probes.
Project: Build a universal battery capacity tester.
Status: Complete
Discharger.xls WILL NOT RUN without io.dll installed FIRST, and discharger box attached. The file is included so you can see how to do it in VBA, and build the box correctly. Original DOS project for this setup is lower down on this page.
Upper Left: Transmitter, Line matcher, modulator.
Upper right: Antennas
Lower Left: Heated stage.
Lower right: Camera adapted to old Zeiss, and adaptation of magnifying glass holders for laser, UV, and colored LED's
Project: Build a decent colloidal silver generator
Status:  Completed.
A constant current 20 hz bipolar signal to the silver electrodes, and a constant stirring by an aquarium air pump ensures no dirty build up on electrodes. Strength is measured directly in ppm using a HM Digital COM100 EC/TDS/TEMP meter, and output is filtered through lab quality papers. Please don't get carried away by the commercial hype and pure Quackery. Colloidal silver is useful, but NOT for, as commonly stated, 600 diseases.

Colloidal silver generator.
Electrodes come through a stainless steel Fowlers Vacola lid, as does the air. Jar is always filled to a constant depth, and a little added  from the last batch avoids a long delay before the current flows adequately.
Colloidal silver generator using a high voltage discharge.
This model uses high voltage pulses from an electric fence unit to produce a mix of coloidal and micro silver particles, as per early methods. Not a very controllable process! Two pulses seems to change the color of the solution, but strength will depend on electrode area, flash voltage, internal circuit resistance and conductivity of solution.
Project: Poor man's centrifuge
Status: Complete
Home built centrifuge.
Needed for the Rife project. Sits atop  of a small high speed blender. 500 to 7500 rpm gives 30-1482 RCF
Project: "Merlin" ongoing educational research into Computer Grading of Children's Text, and Improved Methods for Basic Number Testing, and a critical look at the MetaMetrix "Lexile".
Status: Ongoing
The Merlin project won a statewide Curriculum Excellence Award in 2006. The program was to automate the reading and
scoring (to the Victorian "VELS" system of measuring progress)  of a child's written narrative. It also provided progress reports
on the nature of a child's vocabulary development in terms of the broadness of vocabulary, and measures its expansion. In
the end, because of the undisciplined nature of junior school student's presentations, it was found a small amount of pre-
processing was necessary. Despite this overhead, averaging three minutes per submission, very useful tracking and reporting
was achieved. This project went beyond vocabulary counts, and included a factor for a broad range of phrase frames.These
notes explain the basic nature and theoretical underpinnings of each. The analysis, and testing software, is not public.
Computer Grading of Children's Text, the project's
working paper.
Example report produces by Merlin, the grading program.
(Small extract on right.)
Basic number testing considers time taken as well as
correctness
Io.dll download.  (http://www.geekhideout.com/iodll.shtml)
Project: Personal Audiogram
Status: Finished
The workbook, Rf4.xls contains a worksheet that explains how, and graphs your results. You need headphones, 600 ohm attenuator, and a sine generator. Working out a reasonable baseline without a calibrated source is a guess, but even with an arbitary ase, you can track any degeneration, and compare both ears.
Again, I am not a doctor. Seek professional help if your hearing is defective!
Project:  Testing 18650 Lithium-ion cells from Ebay
Status: Complete
Material on the internet alludes to the widespread repackaging of secondhand cells in China, after salvage from computer battery packs.

As I use dozens of these cells in torches and projects, I used the battery test box I had built to test over forty of these cells. Tested at 0.5C discharge rate, 30 secs on, 20 secs off.
Sadly, all except the fully branded quality cells that had cost from A$9-15 each, and some Trustfire 2400's,  all failed dismally.

Ultrafire Grey "3200"           Achieved milliamp hours      743, 692
Ultrafire Blue "2400"                                                    1041, 730
Panasonic NCR 18650A "3000"                                    2951
Ultrafire Red/Silver "4000"                                            891, 1294, 801, 676, 780
Trustfire Black/Red "2400"                                           2005, 2402, 2270, 2343, 2396, 2558, 1093
Ultrafire Black "3600"                                                  1076, 1027, 1351
Ultrafire Black/Red "4200"                                           1800
Sanyo Pink "1500" (UR18650W2 High disch. Rate cells, 15A)  1526, 1530

CONCLUSION. If you have mission critical applications, buy the fully branded cells from major manufacturers.
Project: Revisit the old Kricotronic patent for discharging a rimfire match rifle.
Status. Ongoing.
Upper photographs show numbered cells, with achieved capacities written on following my testing.
Lower photographs show that the branded, Panasonic cell at 449g logically must have more "active material" than the Ultrafire Grey weighing only 378g, which was well borne out by the tests
CURRENT PROJECTS
Disch3.c was the source to run the discharger box outlined above. It gave a comprehensive report on battery capacity. You will need to download SMPLUS DOS menu library, and possibly a dll to allow LPT port access. The program also used a resident program called SCREEN THIEF to capture the screen to PCX file.
Printer Port I/O routines used in above Disch3.c. These were written in "explanatory code", and most can be reduced to single line functions. At least you will understand the thinking!
Working LABCARD PCL818 functions are within this source.
PWLIB.C just some odd riutines used in instrumentation. Some very odd function names, simply explained as that I modified the function, it gained an added letter. Eg. "getfile" became "getffile", or even "getfffile"! These were never intended for sharing, but I include them knowing a lot can be simply modified for Arduino use.
Another bundle of I/O routines in c, concerned with ADC and LPT.

Octopus circuit as appearing on "http://www.smcelectronics.com/CIRCUITS/OCTOPUS.PDF". Actually this circuit also appeared in Marcus Electronic Circuits, 1982 p 1079, with attributions to a previous publicationin QST magazine in 1975. Plenty of variations abound.
Of all tools in a workshop involved in electronics repair is the Octopus. Those not familiar should seek the manual for the Huntron commercial unit. It is invaluable for in situ diagnosis of faulty components, and especially for comparing traces between a known and faulty board, whilst unpowered. Wise to read a manual from the industry leading Huntron Tracker, which is really an excellent textbook on this approach to testring, and take your understanding to a simpler model.
Another bundle of I/O routines in c.

Project: Octopus Tester
Not really original, but surely this has to be the winning entry! The advt. failed to mention that you need to freeze your cat first.
Project: A contribution to the "One Hundred and One uses for a Used Hacksaw Frame" competition
Status. Complete
Project: A portable gold sluice, and motor. Known as a highbanker elsewhere, the aim was to fit the entire kit into a portable frame.  Not quite achieved, as sluice has yet to be mounted to the frame, but all very easy to get into difficult places. This  kit is entirely explained by pictures. Pump is a quality, Subaru, 2.5hp 4-stroke. Frame cost less than $20, and the carry straps were taken from an old backpack whose zips had failed.
Thankfully, the highbanker has no rotating parts.
Backpack carry frame for the sluice pump is made from plastic conduit.
Nothing innovative about this sluice. Simple and cheap!
Pump and all piping, with a spare bottle of fuel, normally sitting in the tin can, carries comfortably.
Backpack highbanker on its test outing.
Disc brake upgrade to Miyata Valley Runner, front.
Disc brake upgrade to Miyata Valley Runner, rear.
Battery testing is made easy with this Universal Battery Mount
The Better Mousetrap! For black powder enthusiasts only.
The Better Mousetrap even has a safety catch.
Constant Microcurrent Generator for infusing wounds with silver ions.
DIY heated stage for my Zeiss microscope..
Mounting a camera to an early Zeiss microscope entailed making special adapters.
Center is the antenna matching unit, essential for getting maximum power transfer fron the transmitter
Antennas for 27 mHz Rife experiments.
An attenuator salvaged from old piece of test equipment is used to produce audiogram.
Screen shot from battery test discharge box.
Octopus tester as built varies slightly from the above. My transformer is 14v AC, and the 200 ohm resistor shown in the circuit has been replaced by switched 1K5, 470R, 220R,100R, 39R, and 0R. The 100 ohm shunt shown is a 5w carbon type (we don't want inductive here), and the 39R and 100R in the switched chain are 5w. It is mostly used with the 1K5 resistor switched in.

THIS PROJECT was COMPLETELY REDESIGNED , Dec. 2016, to be handheld and self contained. See my Arduino page for the project "GOODBYE OCTOPUS, HELLO ARDUPUS"  Time to forget oscilloscopes, power cords and their wires!
Cat carrier. A new life for an old hacksaw frame.
The use of MetaMetrix "Lexiles" in matching readers to books has limitations clearly stated in MetaMetrix materials, but teachers should read this deposition carefully, understand the Lexile (TM)
as a masterful marketing exercise, and one that needs great caution in its classroom application. Passages in this essay show clearly that even a nonsense rearrangement of text can have the same Lexile as the text before it was scrambled.
Calculating a useful "Risk Factor" from a student's "slope of progress" in reading and math, as a handy point of focus tool for teachers