A digital temperature meter system using ATMega328 microcontroller to read the temperature signal and display the reading in °C and °F on three seven segments using the time-multiplexing technique.
| Item | Code | Purpose | Quantity |
|---|---|---|---|
| Microcontroller | ATMega328P | The Master Mind | 1 |
| USBasp Programmer | Burn The Code on The Controller | 1 | |
| Temperature Sensor | LM35 | Measure The Temperature | 1 |
| 7-Segment | Common Cathode | Display Reading | 3 |
| Push Buttons | Switch Between °C and °F Modes / Reset | 3 | |
| 330Ω Resistor | Ballast Resistors for 7-Segment LEDs | 7 | |
| 10kΩ Resistor | Pull-up Resistor | 1 |
For Simulation: Proteus 8
For Development: VSCode & PlatformIO IDE Extension
ATMega328P
┍━━━┯━━┯━━━┑
(PCINT14/RESET) PC6 ┤1 ╰──╯ 28├ PC5 (ADC5/SCL/PCINT13)
(PCINT16/RXD) PD0 ┤2 27├ PC4 (ADC4/SDA/PCINT12)
(PCINT17/TXD) PD1 ┤3 26├ PC3 (ADC3/PCINT11)
(PCINT18/INT0) PD2 ┤4 25├ PC2 (ADC2/PCINT10)
(PCINT19/OC2B/INT1) PD3 ┤5 24├ PC1 (ADC1/PCINT9)
(PCINT20/XCK/T0) PD4 ┤6 23├ PC0 (ADC0/PCINT8)
VCC ┤7 22├ GND
GND ┤8 21├ AREF
(PCINT6/XTAL1/TOSC1) PB6 ┤9 20├ AVCC
(PCINT7/XTAL2/TOSC2) PB7 ┤10 19├ PB5 (SCK/PCINT5)
(PCINT21/OC0B/T1) PD5 ┤11 18├ PB4 (MISO/PCINT4)
(PCINT22/OC0A/AIN0) PD6 ┤12 17├ PB3 (MOSI/OC2A/PCINT3)
(PCINT23/AIN1) PD7 ┤13 16├ PB2 (SS/OC1B/PCINT2)
(PCINT0/CLKO/ICP1) PB0 ┤14 15├ PB1 (OC1A/PCINT1)
┕━━━━━━━━━━┙
See Also: