Circuit Documentation
Summary
This circuit incorporates an Arduino Nano as the central microcontroller, interfaced with multiple 8x8 LED matrix modules, a buzzer, a push switch, and a couple of resistors. The Arduino Nano controls the LED matrices and the buzzer, while the push switch allows for user interaction. The resistors are used for pull-up configurations and current limiting. The circuit is powered by a 5V supply, which is distributed to the Arduino and other components.
Component List
Microcontroller
- Arduino Nano: A compact microcontroller board based on the ATmega328P, featuring digital and analog I/O pins.
LED Matrix Modules
- 8x8 LED Matrix: Four instances of an 8x8 LED matrix are used for display purposes.
Input Device
- 2Pin Push Switch: A momentary push switch used to provide input to the microcontroller.
Output Device
- Buzzer: An audible signaling device that is controlled by the Arduino Nano.
Passive Components
- Resistors: Two 10k Ohm resistors are used in the circuit for pull-up and current limiting purposes.
Power Supply Components
- Vcc: Represents the positive supply voltage (5V) in the circuit.
- GND: Represents the ground reference in the circuit.
Connectors
- Terminal PCB 2 Pin: A two-pin terminal block used for making external power connections to the circuit.
Wiring Details
Arduino Nano
- GND: Connected to the ground plane, the negative terminal of the buzzer, and one terminal of the push switch through a 10k Ohm resistor.
- D7: Connected to the other terminal of the push switch through a 10k Ohm resistor.
- D8: Connected to one terminal of the Terminal PCB 2 Pin.
- D9: Connected to the positive terminal of the buzzer.
- D10 - D12/MISO: Connected to the clk, CS, and DIN pins of the first 8x8 LED matrix, respectively.
- 5V: Connected to the Vcc terminal of the Terminal PCB 2 Pin and the vcc pin of the first 8x8 LED matrix.
8x8 LED Matrix Modules
- vcc: All matrices are connected in parallel to the 5V supply.
- DIN: The DIN pin of each matrix is connected to the DOUT pin of the previous matrix.
- clk/CLK: The clk pin of each matrix is connected to the CLK pin of the next matrix.
- CS: The CS pin of each matrix is connected to the CS pin of the next matrix.
- Gnd/gnd: All matrices are connected in parallel to the ground plane.
2Pin Push Switch
- Input +: Connected to D7 on the Arduino Nano through a 10k Ohm resistor.
- Output +: Connected to the ground plane.
Buzzer
- PIN: Connected to D9 on the Arduino Nano.
- GND: Connected to the ground plane.
Resistor (10k Ohm)
- Two resistors are used, one between the push switch and the Arduino Nano, and the other between the push switch and the ground plane.
Terminal PCB 2 Pin
- Pin A: Connected to D8 on the Arduino Nano.
- Pin B: Connected to the 5V supply.
Documented Code
Arduino Nano Code (sketch.ino)
void setup() {
}
void loop() {
}
Additional Notes (documentation.txt)
No additional code documentation was provided.