A smart automated environment adjustment system
A smart automated environment adjustment system
Author: Khalifa Tawfek
GitHub Project Link: link_to_github
Description
This project is a smart automated environment adjustment system, It monitors room conditions such as temperature humidty and presure, it displays those monitured data on an oled display screen. When the tempreature exceeds a certain defined threshold, the system automatically triggers a 12V cooling fan to regulrate the environment, also if the tempreature becomes too high a buzzer and led lights start flashing warnings.
Motivation
I chose this project to create an automated system that guarantees a safe and comfortable living space. By constantly monitroing the environment and automatically reacting to changes, it completetly removes the need for manual temperature adjustments. Whethere it is automatically turning on a fan to keep perferct cool space, or an alarm to prevent dangerous overheating, the goal is to have a safe space without human interaction.
Architecture
Log
Week 5 - 11 May
Week 12 - 18 May
Week 19 - 25 May
Hardware
Schematics
Bill of Materials
| Device | Usage | Price |
|---|---|---|
| Raspberry Pi Pico 2W (x2) | The microcontrollers used for sensing, logic, and display control | 35 RON each |
| Waterproof 10k NTC Thermistor | Primary analog temperature sensing | 8 RON |
| BME280 Barometric Pressure Sensor | Digital sensing for pressure and humidity | 15 RON |
| 1.44" TFT LCD Display (ST7735) | Displaying live sensor data and system status | 19 RON |
| CMP-FAN23 12 V Fan | Cooling actuator triggered by high temperatures | 15 RON |
| 4 x 18650 Battery Holder | Supplying portable power | 10 RON |
| Active Buzzer | Audio alarm for critical temperature warnings | 5 RON |
| LM2596 Step-Down DC-DC Power Supply Module | Stepping down the 14.8V battery output to a safe 5V | 8 RON |
| IRFZ44N N-Channel MOSFET | Safe electronic switching for the 12V fan | 3 RON |
| 5mm LEDs & 330Ω Resistors | Visual alarm for critical temperature warnings | 2 RON |
Software
| Library | Description | Usage |
|---|---|---|
| embassy-rp | Hardware Abstraction Layer (HAL) for RP2040 microcontrollers | Used to interface with GPIO, I2C, SPI, and peripherals like pins |
| embassy-executor | Lightweight asynchronous task executor tailored for embedded systems | manage async tasks |
| embassy-embedded-hal | Integration utilities for shared buses and embedded-hal trait compatibility | wrap and share I2C bus access |
| embassy-time | Low-overhead timing and delay management for asynchronous environments | Used for time based delays |
| embassy-sync | Concurrency primitives for safe data sharing and signaling across tasks | Used to send messages between tasks using by Channels |
Links
- Wireless FAN control with ESPNow - Inspiration for wireless communication and automated fan triggering.