Project

# Title Team Members TA Documents Sponsor
1 Smart Sprinkler Robot System
Area Award: Conservation
Denis Kurtovic
Jose Orozco
Kevin Johnson
appendix0.pdf
design_document0.pdf
final_paper0.pdf
presentation0.presentation
proposal0.pdf

Our project goal was to make a robotic sprinkler system that can detect soil moisture content and check online weather forecasts to determine whether the ground needs to be watered. After completing our product, we were able to meet all of our requirements.



The two main parts of this design are the sprinkler robot and the base station. The base station checks the weather forecast to determine if the chance of precipitation is low enough to warrant watering for the day. If the chance of rain is high enough, then the robot will not be deployed; otherwise, it will send the robot out to measure the soil moisture at specific points on the lawn. The sprinkler robot measures the soil moisture by deploying a two-point-probe into the ground to measure resistance. This data is then sent wirelessly to the base station where it determines whether or not to water that area. If it is determined the area needs watering, then the robot will turn on its sprinkler system and water the area until the base station tells it to stop. After that, the robot moves on to the next area that the base station tells it to go to. When the robot is finished, it returns to the base station.



This product is commercially viable because it is a smart watering system that does not require the installation of multiple expensive pipes and probes. It both reduces the water waste of a traditional sprinkler system while still allowing for it to be transported to a new location.



This project was sponsored by MIT Lincoln Laboratory.

Master Bus Processor

Clay Kaiser, Philip Macias, Richard Mannion

Master Bus Processor

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General Description

We will design a Master Bus Processor (MBP) for music production in home studios. The MBP will use a hybrid analog/digital approach to provide both the desirable non-linearities of analog processing and the flexibility of digital control. Our design will be less costly than other audio bus processors so that it is more accessible to our target market of home studio owners. The MBP will be unique in its low cost as well as in its incorporation of a digital hardware control system. This allows for more flexibility and more intuitive controls when compared to other products on the market.

Design Proposal

Our design would contain a core functionality with scalability in added functionality. It would be designed to fit in a 2U rack mount enclosure with distinct boards for digital and analog circuits to allow for easier unit testings and account for digital/analog interference.

The audio processing signal chain would be composed of analog processing 'blocks’--like steps in the signal chain.

The basic analog blocks we would integrate are:

Compressor/limiter modes

EQ with shelf/bell modes

Saturation with symmetrical/asymmetrical modes

Each block’s multiple modes would be controlled by a digital circuit to allow for intuitive mode selection.

The digital circuit will be responsible for:

Mode selection

Analog block sequence

DSP feedback and monitoring of each analog block (REACH GOAL)

The digital circuit will entail a series of buttons to allow the user to easily select which analog block to control and another button to allow the user to scroll between different modes and presets. Another button will allow the user to control sequence of the analog blocks. An LCD display will be used to give the user feedback of the current state of the system when scrolling and selecting particular modes.

Reach Goals

added DSP functionality such as monitoring of the analog functions

Replace Arduino boards for DSP with custom digital control boards using ATmega328 microcontrollers (same as arduino board)

Rack mounted enclosure/marketable design

System Verification

We will qualify the success of the project by how closely its processing performance matches the design intent. Since audio 'quality’ can be highly subjective, we will rely on objective metrics such as Gain Reduction (GR [dB]), Total Harmonic Distortion (THD [%]), and Noise [V] to qualify the analog processing blocks. The digital controls will be qualified by their ability to actuate the correct analog blocks consistently without causing disruptions to the signal chain or interference. Additionally, the hardware user interface will be qualified by ease of use and intuitiveness.

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