# Title Team Members TA Documents Sponsor
29 Solar Water Filtration and Vending System
Lixiang Dong
Mustika Wijaya
Rahul Raju
Bryce Smith design_review
Most rural areas don’t have a consistent source of water, forcing people to walk long distances to get it. One of our member’s non-profit organization (Solar Chapter) recently built a solar pumping system, which solves this problem. However, this water requires further treatment to be drinkable. To address this problem, we’ve decided to build a solar distillation system.

Solar panels will charge a lead acid battery (affordable), which will power the vending system. A charge controller will be required to obtain the desired output from a fluctuating input. Additional sun tracking system using photoresistor may be implemented to improve performance. We will then implement a water filtration system. Water will flow in through solar distillation to improve the water clarity and clean the water to high degree of purity. Then water will flow to another tank with purify layers of fibre membrane, active charcoal, and sand. For monitor our machine, Using an ultrasonic sensor, we will determine the amount of water within the storage and distillation tanks. This will be connected to sluice gates and the distillation setup, serving as a control system. The water quality will also be monitored using pH and Turbidity sensors, which will help evaluate the system’s performance. We will then implement a vending system, which disposes a fixed amount of water for money - this will also utilize sluice gates. As a reach goal, we will consider ways to transmit this sensor data to provide for remote monitoring, enabling maintenance.

In our conversations with course staff, we were informed that this project was sufficiently complex. In fact, this is a subset of our original plan to develop a full filtration, monitoring and vending system. We are willing to adjust our goals to achieve adequate complexity - for instance, including the data transmission as an expectation as opposed to a reach goal if required. As socially-conscious engineering students, we intend to put a version of our final product into active use in rural Indonesia and similar environments.

Cypress Robot Kit

Todd Nguyen, Byung Joo Park, Alvin Wu

Cypress Robot Kit

Featured Project

Cypress is looking to develop a robotic kit with the purpose of interesting the maker community in the PSOC and its potential. We will be developing a shield that will attach to a PSoC board that will interface to our motors and sensors. To make the shield, we will design our own PCB that will mount on the PSoC directly. The end product will be a remote controlled rover-like robot (through bluetooth) with sensors to achieve line following and obstacle avoidance.

The modules that we will implement:

- Motor Control: H-bridge and PWM control

- Bluetooth Control: Serial communication with PSoC BLE Module, and phone application

- Line Following System: IR sensors

- Obstacle Avoidance System: Ultrasonic sensor

Cypress wishes to use as many off-the-shelf products as possible in order to achieve a “kit-able” design for hobbyists. Building the robot will be a plug-and-play experience so that users can focus on exploring the capabilities of the PSoC.

Our robot will offer three modes which can be toggled through the app: a line following mode, an obstacle-avoiding mode, and a manual-control mode. In the manual-control mode, one will be able to control the motors with the app. In autonomous modes, the robot will be controlled based off of the input from the sensors.