DMS
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Non-Profit

3 transformers, 3 COGs, in-line with compressor airflow
PWM and timing "octopus relays"
Moisture capture and airflow dispersion tubing
Control circuits of the handheld version, utilizing two 555 timers to perform same function as original relays
Closed housing with relay, 4x18650 battery-clip, and the COG plates and dielectric
The control knobs for the device
        As both a non-profit project and a personal device, I have spent much time developing this design. I ideated and prototyped the first model of the Corona Ozone Generator (COG) as a proof-of-concept of ozone production for sterilization. Utilizing an air compressor, a neon transformer, two sheets of aluminum, a plastic container, and a sheet of glass, a high-volume, variable-concentration, oxygen exciter was born. Then, in collaboration with Jock Brandis, a leader and mentor from Full Belly Project (FBP), I helped create the first version of this device (top row and left-middle pictures, 2016) to combat aflatoxin contamination in food supplies, both locally and internationally. FBP now uses aflatoxin tests, developed concomitantly with the COG, and an additional bar-code tracking system for bags that are contaminated and need treatment before sale in world markets. 
​      The second model (bottom row and right-middle pictures, 2017), was a handheld, battery-powered version of the larger device. The second iteration used PWM and timing to modulate ozone concentration instead of relays and airflow. Ozone is employed in many applications from medicine to our food because it is a safe way to kill pathogens and other unwanted living organisms.

        One of FBP's newer items, and one that is already in use in 15+ countries, is this soap press. I aided in the original manufacturing and testing of early models. Designed to recycle partially-used bars of soap from hotels, sanitize them, and then make new soap, these soap presses allow for improved sanitation and disease control in underprivileged populations. (2015)
The molds for the new bars of soap.
The soap presses themselves in various stages of production

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         In collaboration with other volunteers, I helped construct and program this 3D, Arduino-controlled CNC router. It is one of the most advanced machines at FBP and helps with accurate and repetitive hole- and shape-cutting. (2018)

         When I initially started volunteering at FBP, people began to realize I was more than a machinist when I repaired the transmission and clutch for this 1904 Pratt and Whitney Engine Lathe. With the help of other volunteers to carry some of the heavier cogs, I disassembled everything left of the blue belt and hoped to repair it with just 2 spare gears and no other parts. Over the span of a few weeks, I realigned the gear shafts, reinstalled some slipped keys, and reassembled the 18-speed gearbox and associated clutch. When it was once again whole, I called the leader, Jock, to turn it on. He flipped the breaker and the switch, and eureka, the lathe worked --- in forward, reverse, neutral, and all of the feed and turn-speeds (previously just forward, 4 speeds, and no feed). From that day on, it has been my job to solve the seemingly impossible ... and to fix all of the non-functioning tools. (2012)
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The old-device storage container
The back room of the workshop (fabrication, welding, machining)
The front room of the workshop (electronics, assembly)
A double-decker bus I put some repair time on to A) try to get it to run and B) gut the internals so we could have meetings inside
A rocker water pump. This is an alternate plastic and wood design which is much lighter but less durable and sustainable than the concrete version
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  • Home
  • Devices
    • Academic
    • Duke AMA
    • Non-Profit
    • Personal
  • Astrophotography
  • Other
    • Miscellaneous
    • Scientific Papers
    • About Me