Circuit Documentation
Summary
The circuit in question appears to be a power regulation and control system with an interface for a coin reader and an LCD display. The system is controlled by an Arduino UNO microcontroller, which manages input from the coin reader and outputs to the LCD. A 12V power supply is regulated down to a lower voltage using an LM2596 voltage regulator. A diode provides polarity protection, and a MOSFET (IRFZ44N) is used for switching purposes, possibly for controlling power to a load. The circuit also includes a USB female port, likely for providing power output or data communication.
Component List
IRFZ44N
- Description: N-Channel MOSFET
- Pins: Gate, Drain, Source
Resistor
- Description: Passive electrical component with a resistance of 1 Ohm
- Pins: pin1, pin2
Diode
- Description: Semiconductor device that allows current to flow in one direction
- Pins: cathode, anode
Coin Reader
- Description: Device for detecting and counting coins
- Pins: VCC, COIN, VDD, COUNTER
Arduino UNO
- Description: Microcontroller board based on the ATmega328P
- Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13
12V Power Supply
- Description: Provides a 12V power source
- Pins: +, -
DC Connector
- Description: Connector for DC power input
- Pins: 1, 2
Terminal PCB 2 Pin (x2)
- Description: Two-pin terminal for PCB mounting
- Pins: Pin A, Pin B
LM2596
- Description: Voltage Regulator
- Pins: IN, OUT
USB Female
- Description: Female USB connector for power or data
- Pins: VCC, GND, -D, +D
16x2 I2C LCD
- Description: Liquid Crystal Display with I2C interface
- Pins: GND, VCC, SDA, SCL
Wiring Details
IRFZ44N
- Gate connected to Resistor (pin1) and Arduino UNO (D9)
- Drain connected to Diode (anode) and LM2596 (IN)
- Source connected to Resistor (pin2)
Resistor
- pin1 connected to IRFZ44N (Gate) and Arduino UNO (D9)
- pin2 connected to IRFZ44N (Source)
Diode
- cathode connected to Terminal PCB 2 Pin (Pin A), LM2596 (IN), 12V Power Supply (-), and DC Connector (1)
- anode connected to IRFZ44N (Drain)
Coin Reader
- VCC connected to Arduino UNO (5V)
- COIN connected to Arduino UNO (D8)
- VDD connected to Arduino UNO (GND)
- COUNTER connected to Arduino UNO (5V)
Arduino UNO
- D9 connected to IRFZ44N (Gate) and Resistor (pin1)
- D8 connected to Coin Reader (COIN)
- 5V connected to Coin Reader (COUNTER) and 16x2 I2C LCD (VCC)
- GND connected to Coin Reader (VDD) and 16x2 I2C LCD (GND)
- A4 connected to 16x2 I2C LCD (SDA)
- A5 connected to 16x2 I2C LCD (SCL)
12V Power Supply
- connected to Terminal PCB 2 Pin (Pin B)
- connected to Diode (cathode), Terminal PCB 2 Pin (Pin A), LM2596 (IN), and DC Connector (1)
DC Connector
- 1 connected to Diode (cathode) and 12V Power Supply (-)
- 2 connected to Terminal PCB 2 Pin (Pin B)
Terminal PCB 2 Pin
- Pin A connected to Diode (cathode), LM2596 (IN), and 12V Power Supply (-)
- Pin B connected to 12V Power Supply (+) and DC Connector (2)
LM2596
- IN connected to Diode (cathode), Terminal PCB 2 Pin (Pin A), and 12V Power Supply (-)
- OUT connected to USB Female (VCC and GND)
USB Female
- VCC connected to LM2596 (OUT)
- GND connected to LM2596 (OUT)
16x2 I2C LCD
- GND connected to Arduino UNO (GND)
- VCC connected to Arduino UNO (5V)
- SDA connected to Arduino UNO (A4)
- SCL connected to Arduino UNO (A5)
Documented Code
Arduino UNO Code (sketch.ino)
void setup() {
}
void loop() {
}
Additional Notes (documentation.txt)
No additional code documentation was provided.