Differences
This shows you the differences between two versions of the page.
|
pm:prj2026:bianca.popa1106:radu_cristin.bigan [2026/05/08 04:41] radu_cristin.bigan |
pm:prj2026:bianca.popa1106:radu_cristin.bigan [2026/05/09 23:24] (current) radu_cristin.bigan [Hardware Design] |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== PianoHand ====== | ====== PianoHand ====== | ||
| + | |||
| + | * **Author: Bigan Radu-Cristin** | ||
| + | * **Group: 335CA** | ||
| ===== Introduction ===== | ===== Introduction ===== | ||
| Line 5: | Line 8: | ||
| This project consists of building a robotic hand with 5 fingers, each actuated by a servo motor, placed over 5 piano keys (DO, RE, MI, FA, SOL). The system can detect musical notes from different sources and reproduce them physically on the keys. | This project consists of building a robotic hand with 5 fingers, each actuated by a servo motor, placed over 5 piano keys (DO, RE, MI, FA, SOL). The system can detect musical notes from different sources and reproduce them physically on the keys. | ||
| - | * **What it does:** The hand listens to or reads music and plays it back on a real piano by pressing the keys with servo-driven fingers. It supports three operating modes: playing a hardcoded melody from memory, listening to a short melody through a microphone and reproducing it, or reading a .wav file from an SD card and playing the detected notes. | + | * **What it does:** The hand listens to or reads music and plays it back on an electronic keyboard by pressing the keys with servo-driven fingers. It supports three operating modes: playing a hardcoded melody from memory, listening to a short melody through a microphone and reproducing it, or reading a .wav file from an SD card and playing the detected notes. |
| * **Purpose:** The goal is to explore the integration of audio signal processing (FFT-based note detection) with real-time motor control on an embedded platform, while also covering a wide range of communication protocols studied in the PM course. | * **Purpose:** The goal is to explore the integration of audio signal processing (FFT-based note detection) with real-time motor control on an embedded platform, while also covering a wide range of communication protocols studied in the PM course. | ||
| * **Starting idea:** The idea came from wanting to build something that bridges digital signal processing and physical actuation — a robot that can actually "hear" music and play it back. | * **Starting idea:** The idea came from wanting to build something that bridges digital signal processing and physical actuation — a robot that can actually "hear" music and play it back. | ||
| - | * **Why it is useful:** It demonstrates a practical application of FFT on a microcontroller, combining audio analysis with mechanical output. The project is built on an ESP32 instead of the standard ATmega board because the FFT algorithm (2048-point Cooley-Tukey) requires significantly more RAM and processing power than what an 8-bit AVR can offer. | + | * **Why it is useful:** It demonstrates a practical application of FFT on a microcontroller, combining audio analysis with mechanical output. |
| ===== General Description ===== | ===== General Description ===== | ||
| Line 26: | Line 29: | ||
| | LCD 1602 Display | I2C (SDA, SCL) | ESP32 → Display | Shows current mode, active note | | | LCD 1602 Display | I2C (SDA, SCL) | ESP32 → Display | Shows current mode, active note | | ||
| | 5× Servo SG90 | PWM (LEDC channels) | ESP32 → Servos | Actuate fingers on piano keys | | | 5× Servo SG90 | PWM (LEDC channels) | ESP32 → Servos | Actuate fingers on piano keys | | ||
| - | | BTN1 | GPIO (digital input) | Button → ESP32 | Cycle between modes | | + | | BTN1 | GPIO (digital input) | Button → ESP32 | Start/Stop playback | |
| - | | BTN2 | GPIO (digital input) | Button → ESP32 | Start/Stop playback | | + | | BTN2 | GPIO (digital input) | Button → ESP32 | Cycle between modes | |
| ===== Hardware Design ===== | ===== Hardware Design ===== | ||
| Line 42: | Line 45: | ||
| | 220Ω Resistor | 1 | Current limiting for the LCD backlight | | | 220Ω Resistor | 1 | Current limiting for the LCD backlight | | ||
| | Breadboard 830 points | 1 | Solderless assembly | | | Breadboard 830 points | 1 | Solderless assembly | | ||
| - | | Dupont Wires (M-M, F-M) | ~30 | Connections | | ||
| | External 5V/2A Power Supply | 1 | Servo power | | | External 5V/2A Power Supply | 1 | Servo power | | ||
| + | |||
| + | **Electrical Diagram:** | ||
| + | {{ :pm:prj2026:bianca.popa1106:schemaelectricapm.jpg?500 |}} | ||
| ===== Software Design ===== | ===== Software Design ===== | ||
