Circuit Documentation

Summary

This document provides a detailed overview of a circuit design that includes various components such as an arcade button, an I2C LCD, a 4G antenna, a GPS antenna, a membrane matrix keypad, and a Lilygo 7670e microcontroller. The document includes a component list, wiring details, and code documentation.

Component List

Arcade Button (red)

• Description: A simple push-button switch.
• Pins: 1 pin (no name yet)
• Purpose in Circuit: Used as an input device to trigger actions in the microcontroller.

16x2 I2C LCD

• Description: A 16x2 character LCD display with I2C interface.
• Pins: GND, VCC, SDA, SCL
• Purpose in Circuit: Used to display information.

4G Antenna

• Description: An antenna for 4G communication.
• Pins: Connection
• Purpose in Circuit: Used for 4G connectivity.

Antenna GPS Embedded SMA

• Description: An embedded GPS antenna with SMA connector.
• Pins: VCC, GND
• Purpose in Circuit: Used for GPS signal reception.

4X4 Membrane Matrix Keypad

• Description: A 4x4 matrix keypad.
• Pins: R1, R2, R3, R4, C1, C2, C3, C4
• Purpose in Circuit: Used as an input device for entering data.

Lilygo 7670e

• Description: A microcontroller with various I/O pins.
• Pins: 3v3, Gnd, Pin 32, pin 33, pin 34, pin35, pin 25, Pin 26, Pin 27, Pin 4, Pin 2, Pin 15, pin 14, Pin 13, Pin 12, VBAT, TXD, RXD, 3v3, Pin 22, Pin 21, Pin 23, Pin 19, Pin 18, Pin 5, Pin 39, Pin 36, Pin 0, RST, VBUS, LTE antenna, Gps Antenna, Type C
• Purpose in Circuit: Acts as the main processing unit, controlling other components and handling data processing.

Wiring Details

Arcade Button (red)

• Pin (no name yet):
  • Connected to Lilygo 7670e Pin 2
  • Connected to 16x2 I2C LCD GND
  • Connected to Lilygo 7670e Gnd

16x2 I2C LCD

• GND:

  • Connected to Arcade Button (red) pin (no name yet)
  • Connected to Lilygo 7670e Gnd

• VCC:

  • Connected to Lilygo 7670e VBUS

• SDA:

  • Connected to Lilygo 7670e Pin 21

• SCL:

  • Connected to Lilygo 7670e Pin 22

4G Antenna

• Connection:
  • Connected to Lilygo 7670e LTE antenna

Antenna GPS Embedded SMA

• VCC:

  • Connected to Lilygo 7670e Gps Antenna

• GND:

  • No connection specified

4X4 Membrane Matrix Keypad

• C1:

  • Connected to Lilygo 7670e Pin 32

• C2:

  • Connected to Lilygo 7670e pin 33

• C3:

  • Connected to Lilygo 7670e pin 34

• C4:

  • Connected to Lilygo 7670e pin35

• R1:

  • Connected to Lilygo 7670e Pin 12

• R2:

  • Connected to Lilygo 7670e Pin 13

• R3:

  • Connected to Lilygo 7670e pin 14

• R4:

  • Connected to Lilygo 7670e Pin 15

Lilygo 7670e

• Gnd:

  • Connected to Arcade Button (red) pin (no name yet)
  • Connected to 16x2 I2C LCD GND

• VBUS:

  • Connected to 16x2 I2C LCD VCC

• Pin 2:

  • Connected to Arcade Button (red) pin (no name yet)

• Pin 12:

  • Connected to 4X4 Membrane Matrix Keypad R1

• Pin 13:

  • Connected to 4X4 Membrane Matrix Keypad R2

• pin 14:

  • Connected to 4X4 Membrane Matrix Keypad R3

• Pin 15:

  • Connected to 4X4 Membrane Matrix Keypad R4

• Pin 21:

  • Connected to 16x2 I2C LCD SDA

• Pin 22:

  • Connected to 16x2 I2C LCD SCL

• Pin 32:

  • Connected to 4X4 Membrane Matrix Keypad C1

• pin 33:

  • Connected to 4X4 Membrane Matrix Keypad C2

• pin 34:

  • Connected to 4X4 Membrane Matrix Keypad C3

• pin35:

  • Connected to 4X4 Membrane Matrix Keypad C4

• LTE antenna:

  • Connected to 4G Antenna Connection

• Gps Antenna:

  • Connected to Antenna GPS Embedded SMA VCC

Code Documentation

No code is provided for this circuit.

---

This document provides a comprehensive overview of the circuit design, including the components used, their connections, and their purposes. This should serve as a useful reference for understanding and troubleshooting the circuit.