My Work
CAD Model
Pipe Cleaning Robot
UCLA B.S Capstone Design
This robot is designed to perform clog-cleaning operation within relatively-thin pipes. We were able to build a working prototype under a limited budget of $700. It is capable of:
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Moving through an 8-in-diameter pipe, even upwards
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Crossing up to 90-degree curve
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Brushing away up to 2-in-thick foam sealant (sprayed as fake clog)
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Operating autonomously using force sensor readings, or manually through Bluetooth
The robot is compactly designed. Inside its two 4-in-diameter electronic housings there are an Arduino Uno, an MDD10A motor driver, a 437 RPM DC planetary gear motor, a 12 RPM DC planetary gear motor, six 18650 3.7 V 3200-mAh Lithium batteries, an HC-05 Bluetooth module, an ADXL345 accelerometer, and an HX711 load cell amplifier. We also managed to control its weight through 3D-printing the housings and frames.
Our project was sponsored and acknowledged by ACCO Engineered Systems.
CAD Software: SOLIDWORKS
Level II EVSmartPlug™ Charging Boxes
UCLA Smart Grid Energy Research Center
During my time as student researcher at UCLA SMERC, I led the fabrication team to fabricate and test Level II EVSmartPlug™ Charging Boxes and delivered them for installation at UCLA parking structures and Santa Monica Hospitals. ZigBee sensors, PCBs, and Wi-Fi gateways are integrated inside for smart charging research and application.
These smart charging boxes are capable of Level I and Level II charging for electric vehicles (EV). Each can charge 4 EVs at the same time and adjust the power of every single electricity outlet. Level II EVSmartPlug™ Charging Boxes can also communicate with user interface as well as the control center.
Wind Turbine Design Challenge
UCLA
This design project was the course project of MAE 94 - Introduction to Computer-Aided Design & Drafting at UCLA during my sophomore year.
The challenge was to design and 3D-print a wind turbine within 6-cm-radius that, when installed on a given generator and put inside the wind tunnel, could produce the highest voltage output possible under both high and low wind speed.
I designed this turbine using the shape profile of the AH 79-100 C airfoil. Our final prototype was able to produce a voltage of over 15V under high speed and over 8V under low speed, which are the highest readings among the class.
CAD Software: SOLIDWORKS
Lithographic 3D Cryo-Bioprinting
UC Berkeley M.Eng Capstone Design
We are currently developing a lithographic 3D bioprinter prototype as proof of concept for frozen food 3D printing. The prototype uses a “print – flip – stack” mechanism to print and stack edible biomaterial layers in cryogenic bath.
We have designed a extrusion system for the printer module, and a motor-controlled stacking platform with coolant reservoir and integrated with a DOBOT Magician robotic arm to enable automated stacking process. Progress will be updated once further modeling and testing are completed.
CAD Software: SOLIDWORKS
