Project

# Title Team Members TA Documents Sponsor
16 Dual-Mode Smart Temperature Coaster
 Alan Ilinskiy
Areg Gevorgyan
## Team Members
- Areg Gevorgyan
- Alan Ilinskiy

## Problem
Ideal drink temperatures don’t last. Hot drinks cool too quickly, and cold drinks warm up. Existing solutions like thermal mugs only slow heat loss and mostly work for hot drinks, while ice cubes dilute flavor.

## Solution
A smart coaster that actively maintains a user-selected drink temperature. The device can both heat and cool using a reversible thermal plate, allowing instant switching between modes. A temperature sensor measures the drink surface, and a microcontroller runs PID control to stabilize and hold the desired temperature. The user sets their preferred temperature with a knob and views it on a small display; the coaster automatically adjusts to lock in that temperature.

## Solution Components

### Subsystem 1: Microcontroller and Control Logic
Handles system control, PID loop and user input.
**Components:** STM32 microcontroller

### Subsystem 2: Thermal Regulation
Actively heats or cools the drink by reversing current direction.
**Components:** High-power Peltier module, custom H-bridge / power PCB

### Subsystem 3: Temperature Sensing
Continuously measures drink temperature for closed-loop control.
**Components:** IR temperature sensor

### Subsystem 4: User Interface
Allows users to set and view temperature preferences.
**Components:** Rotary encoder (knob), display

### Subsystem 5: Power
Supplies and regulates power for logic and high-current thermal control.
**Components:** External power adapter, onboard voltage regulation

## Criterion for Success
- Maintains user-set temperature within ±5°C
- Seamlessly switches between heating and cooling
- Stable PID control with no oscillation
- Intuitive temperature selection via knob and display

S.I.P. (Smart Irrigation Project)

Jackson Lenz, James McMahon

S.I.P. (Smart Irrigation Project)

Featured Project

Jackson Lenz

James McMahon

Our project is to be a reliable, robust, and intelligent irrigation controller for use in areas where reliable weather prediction, water supply, and power supply are not found.

Upon completion of the project, our device will be able to determine the moisture level of the soil, the water level in a water tank, and the temperature, humidity, insolation, and barometric pressure of the environment. It will perform some processing on the observed environmental factors to determine if rain can be expected soon, Comparing this knowledge to the dampness of the soil and the amount of water in reserves will either trigger a command to begin irrigation or maintain a command to not irrigate the fields. This device will allow farmers to make much more efficient use of precious water and also avoid dehydrating crops to death.

In developing nations, power is also of concern because it is not as readily available as power here in the United States. For that reason, our device will incorporate several amp-hours of energy storage in the form of rechargeable, maintenance-free, lead acid batteries. These batteries will charge while power is available from the grid and discharge when power is no longer available. This will allow for uninterrupted control of irrigation. When power is available from the grid, our device will be powered by the grid. At other times, the batteries will supply the required power.

The project is titled S.I.P. because it will reduce water wasted and will be very power efficient (by extremely conservative estimates, able to run for 70 hours without input from the grid), thus sipping on both power and water.

We welcome all questions and comments regarding our project in its current form.

Thank you all very much for you time and consideration!