Exceptional Coil

I.D. is 1.654".Wire diameter is 0.01" or 30AWG.The inductance is
0.984mH.The length is 2.1615"

Stair Climber Mechanism

Modification of 47" Samsung TV

To overcome a thermal problem with visible image distortion after approximately 1hr, D3 added small heatsinks to the video memory chips and other IC's, plus this external fan mounted outside on the rear cover. The interior RF shield is seen under the fan blades. After a test running over four hours, the TV continued to operate without degradation-success!

70 Year Old Meter

A meter out of a tube tester with a hand-typed paper manual dated 1940. D3 created a new CPU USAGE panel for the meter in Inkscape. An Arduino micro-controller is driving a current source transistor for testing and interface.

Latching Push Button Switch

D3 innovative modification of industrial push button switch with the addition of a solenoid to create a magnetic latch that opens when the button is pushed.

Supercharged Weed Wacker Engine

Direct air injection at 70psi combined with opening the high speed jet for more fuel......runs very loud, very fast!

Hydraulic Cylinder Test

Radar TV

Going Mobile

New shock absorbing mount for radar dome on top of car....D3 power supply driven by standard 12vdc-to120vac inverter...first test drive was a success.

24KM 3KW Radar

Gracious gift from a local lobster man, lucky to have a 24KM radar with display (not shown)....D3 isolated fault to power supply board in display unit, and built temporary multi-voltage supply with PC power supply to drive system....works great, demonstrated good discrimination and tracking of paddle board user just inside a causeway at 200yards...clearly indicated large container ship offshore waiting entry into major harbor....plan to mount it on car shortly.

D3 took a break from building virtual appliances for his cloud to make this water cooled heat sink for a high power H-bridge controller.

D3 Integrated PIC-XBee with LCD Display, LED, and Thermistor

Frog Flash

D2 design for a sophisticated secondary flash-on-a-stick with optical slave circuit cobbled together with photo resistor out of printer and a high voltage triac from something else; works great....will use shortly for spring frog photo quest as peepers recover from recent very cold night....

Cupola Light Panel

Control circuit based on a PICAXE microcontroller under development.

3 Phase 50 AMP Relay Bank

D3 design utilizing all 6 high power 3-phase 50 amp relays. A very loud CLANK when they are turned on!

Cool New LED Light

Latest D3 Design.

Personal Music Studio

The orange spot on the blue cushion is from a led array mounted on the ceiling!

HAL for Home

RFID Keyed Entry: D3 designed a circuit to convert the square-wave output of a RFID reader to control a relay that is connected to our garage door opener. This is an inside view of the assembly and installation. On the front of the house, waving a tag just below the small red LED (visible through the hole and on the front to indicate sensor location) opens or closes the door.

New Table Lamp

View of the base of a lamp D3 made from an interesting insulator rescued after the local electric company replaced it. Likely out in the weather for many years, the porcelain is still in fine shape.

Light Box

A great light box built from a CCFL back light extracted from an old LCD display. Exceptionally uniform light intensity distribution across the entire surface. The colored squares are filters. It runs on +12vdc (2amps) & + 5vdc.