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This shows you the differences between two versions of the page.
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pm:prj2026:jan.vaduva:andreea.radu2107 [2026/05/09 23:49] andreea.radu2107 [Block Diagram] |
pm:prj2026:jan.vaduva:andreea.radu2107 [2026/05/09 23:59] (current) andreea.radu2107 [Pins Layout and Utilization] |
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| ====== Interactive Defusal Simulator ====== | ====== Interactive Defusal Simulator ====== | ||
| + | ^ Author | Andreea Radu | | ||
| + | ^ Series and Group | 331CB | | ||
| ===== Introduction ===== | ===== Introduction ===== | ||
| Line 113: | Line 115: | ||
| ^ ATmega328P Signal ^ Connected Component ^ Usage ^ | ^ ATmega328P Signal ^ Connected Component ^ Usage ^ | ||
| | VBUS | Power bank / USB supply | Main power input through Micro USB | | | VBUS | Power bank / USB supply | Main power input through Micro USB | | ||
| - | | VCC_TARGET | VCC rail | Power for external modules | | ||
| | GND | GND rail | Common ground | | | GND | GND rail | Common ground | | ||
| | PC4 | LCD SDA + MPU6050 SDA | I2C data | | | PC4 | LCD SDA + MPU6050 SDA | I2C data | | ||
| | PC5 | LCD SCL + MPU6050 SCL | I2C clock | | | PC5 | LCD SCL + MPU6050 SCL | I2C clock | | ||
| - | | PD2 | DHT11 DATA | Temperature sensor input | | + | | PC3 | DHT11 DATA | Temperature sensor input | |
| | PD3 | Passive Buzzer | PWM sound output | | | PD3 | Passive Buzzer | PWM sound output | | ||
| - | | PD4 | TTP223 Touch Sensor OUT | Touch input | | + | | PD2 | TTP223 Touch Sensor OUT | Touch input | |
| - | | PD5 | RGB LED - Red | LED output | | + | | PC2 | RGB LED - Red | LED output | |
| - | | PD6 | RGB LED - Green | LED output | | + | | PC1 | RGB LED - Green | LED output | |
| - | | PD7 | RGB LED - Blue | LED output | | + | | PC0 | RGB LED - Blue | LED output | |
| | PB0 | Keypad R1 | Keypad row | | | PB0 | Keypad R1 | Keypad row | | ||
| - | | PB1 | SG90 Servo | PWM servo control | | + | | PB4 | SG90 Servo | PWM servo control | |
| - | | PB2 | Keypad R2 | Keypad row | | + | | PB1 | Keypad R2 | Keypad row | |
| - | | PB3 | Keypad R3 | Keypad row | | + | | PB2 | Keypad R3 | Keypad row | |
| - | | PB4 | Keypad R4 | Keypad row | | + | | PB3 | Keypad R4 | Keypad row | |
| - | | PC0 | Keypad C1 | Keypad column | | + | | PD4 | Keypad C1 | Keypad column | |
| - | | PC1 | Keypad C2 | Keypad column | | + | | PD5 | Keypad C2 | Keypad column | |
| - | | PC2 | Keypad C3 | Keypad column | | + | | PD6 | Keypad C3 | Keypad column | |
| - | | PC3 | Keypad C4 | Keypad column | | + | | PD7 | Keypad C4 | Keypad column | |
| The LCD and MPU6050 share the I2C bus on PC4 and PC5. The keypad uses eight GPIO pins, including PC0-PC3 as digital inputs. The buzzer and servo use PWM-capable pins, while the RGB LED uses three separate outputs. The project is powered through the Micro USB connector from a USB power bank, and all modules share the same ground. | The LCD and MPU6050 share the I2C bus on PC4 and PC5. The keypad uses eight GPIO pins, including PC0-PC3 as digital inputs. The buzzer and servo use PWM-capable pins, while the RGB LED uses three separate outputs. The project is powered through the Micro USB connector from a USB power bank, and all modules share the same ground. | ||
| - | ==== Power Supply ==== | ||
| - | I want the project to work without being connected to a laptop, so it will be powered from batteries. The easiest and safest option is to use a **USB power bank**, because it already provides a stable 5V output. | + | ==== Electrical Diagram ==== |
| - | The power bank will power the ATmega328P Xplained Mini through USB. Since the servo motor can require more current than the microcontroller board can safely provide, I may power the servo from a separate 5V line from the same power bank or from an external 5V supply. In this case, all grounds must be connected together. | + | {{ :pm:prj2026:jan.vaduva:electric.jpeg?900 |Electrical diagram}} |
| - | The ON/OFF switch will be placed between the power source and the circuit, so the entire device can be turned on and off physically. | ||
| ==== Mechanical Design ==== | ==== Mechanical Design ==== | ||
