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pm:prj2026:bianca.popa1106:mihnea_stefan.fodor [2026/05/06 18:16] mihnea_stefan.fodor [Hardware Design] |
pm:prj2026:bianca.popa1106:mihnea_stefan.fodor [2026/05/16 17:24] (current) mihnea_stefan.fodor [Bibliography/Resources] |
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| - | ====== Smart ambient climate station ====== | + | ====== Ambient climate station ====== |
| Fodor Mihnea-Stefan 331CA | Fodor Mihnea-Stefan 331CA | ||
| ===== Introduction ===== | ===== Introduction ===== | ||
| Line 32: | Line 32: | ||
| * resistors | * resistors | ||
| * wires | * wires | ||
| + | |||
| + | {{circuit_image_fodor_mihnea-stefan.png?600}} | ||
| ===== Software Design ===== | ===== Software Design ===== | ||
| + | Development Environment: | ||
| + | |||
| + | * Visual Studio Code with the PlatformIO extension | ||
| + | |||
| + | * AVR-GCC managed automatically through the PlatformIO framework | ||
| + | |||
| + | Libraries: <avr/io.h>, <avr/interrupt.h>, <util/delay.h>, <math.h>, <stdlib.h>, <stdio.h>. | ||
| + | |||
| + | Algorithms: | ||
| + | |||
| + | * State machine implemented via a switch-case and global volatile flags (sistem_blocat, mod_manual, sistem_pornit) to manage transitions between states. | ||
| + | * Steinhart-Hart equation used to convert raw 10-bit ADC values from the NTC thermistor into accurate Celsius temperature readings. | ||
| + | * NEC protocol decoder that measures high/low pulse durations using a delay-based timer to reconstruct the 32-bit hexadecimal IR code. | ||
| + | * Instantaneous triggering on INT0 for the tilt sensor to immediately halt the system. | ||
| + | * BCD to decimal conversion. | ||
| + | ===== Results Obtained ===== | ||
| + | |||
| + | The system successfully modulates fan speeds and updates RGB indicators based on real-time temperature fluctuations without blocking the main loop. | ||
| + | |||
| + | The custom NEC decoder accurately captures 32-bit remote codes, allowing seamless toggling between Auto and Manual modes, speed adjustments and effects. | ||
| - | <note tip> | + | The hardware initially suffered from false tilt-sensor triggers due to buzzer vibrations. This was successfully resolved via software debouncing logic and hardware piece arrangement. |
| - | Descrierea codului aplicaţiei (firmware): | + | |
| - | * mediu de dezvoltare (if any) (e.g. AVR Studio, CodeVisionAVR) | + | |
| - | * librării şi surse 3rd-party (e.g. Procyon AVRlib) | + | |
| - | * algoritmi şi structuri pe care plănuiţi să le implementaţi | + | |
| - | * (etapa 3) surse şi funcţii implementate | + | |
| - | </note> | + | |
| - | ===== Rezultate Obţinute ===== | + | The module correctly renders the current time fetched from the DS3231 via custom functions. |
| + | ===== Conclusions ===== | ||
| - | <note tip> | + | The project successfully bridges analog signal processing, digital communication, and power management within a single 8-bit microcontroller architecture. It was an interesting challenge for both software and hardware, requiring creative engineering solutions to overcome several technical obstacles. |
| - | Care au fost rezultatele obţinute în urma realizării proiectului vostru. | + | |
| - | </note> | + | |
| - | ===== Concluzii ===== | + | ===== Bibliography/Resources ===== |
| - | ===== Download ===== | ||
| - | <note warning> | + | ATmega328P Microcontroller: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7810-Automotive-Microcontrollers-ATmega328P_Datasheet.pdf |
| - | O arhivă (sau mai multe dacă este cazul) cu fişierele obţinute în urma realizării proiectului: surse, scheme, etc. Un fişier README, un ChangeLog, un script de compilare şi copiere automată pe uC crează întotdeauna o impresie bună ;-). | + | |
| - | Fişierele se încarcă pe wiki folosind facilitatea **Add Images or other files**. Namespace-ul în care se încarcă fişierele este de tipul **:pm:prj20??:c?** sau **:pm:prj20??:c?:nume_student** (dacă este cazul). **Exemplu:** Dumitru Alin, 331CC -> **:pm:prj2009:cc:dumitru_alin**. | + | DS3231 RTC: https://www.analog.com/media/en/technical-documentation/data-sheets/ds3231.pdf |
| - | </note> | + | |
| - | ===== Jurnal ===== | + | TM1637 datasheet: https://www.puntoflotante.net/DATASHEET-TM1637.pdf |
| - | <note tip> | + | VS1838b datasheet: https://www.sivago.com.cn/upload/pdf/2022/VS1838B.pdf |
| - | Puteți avea și o secțiune de jurnal în care să poată urmări asistentul de proiect progresul proiectului. | + | |
| - | </note> | + | |
| - | ===== Bibliografie/Resurse ===== | + | NEC Infrared: https://www.sbprojects.net/knowledge/ir/nec.php |
| - | <note> | + | Steinhart-Hart euation for thermistors: https://en.wikipedia.org/wiki/Steinhart%E2%80%93Hart_equation |
| - | Listă cu documente, datasheet-uri, resurse Internet folosite, eventual grupate pe **Resurse Software** şi **Resurse Hardware**. | + | |
| - | </note> | + | |
| - | <html><a class="media mediafile mf_pdf" href="?do=export_pdf">Export to PDF</a></html> | ||
