Circuit Documentation

Summary

This circuit involves an ESP32 microcontroller interfacing with various components including an LCD Display, an LCM1602 IIC module, a potentiometer, pushbuttons, resistors, electrolytic capacitors, and an MCP2515 CAN controller. The ESP32 serves as the central control unit, managing inputs from pushbuttons and a potentiometer, and displaying information on an LCD screen via the LCM1602 IIC module. The MCP2515 CAN controller is used for CAN bus communication.

Component List

1. LCD Display (16 pin)

   • Description: A 16-pin LCD display used for visual output.
   • Pins: VSS, VDD, VO, RS, R_W, E, DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7, A, K

2. ESP32

   • Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities.
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, VIN, 3V3, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, BOOT

3. LCM1602 IIC

   • Description: An I2C interface module for the LCD display.
   • Pins: GND, VCC, SDA, SCL, D6, D7, A, K, VSS, VDD, V0, RS, D2, D3, D4, D5, RW, E, D0, D1, LED_A, LED_B

4. Potentiometer

   • Description: A variable resistor used to adjust voltage levels.
   • Pins: GND, Output, VCC

5. Pushbutton

   • Description: A simple pushbutton switch.
   • Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

6. Resistor

   • Description: A 10k Ohm resistor.
   • Pins: pin1, pin2
   • Properties: Resistance: 10k Ohms

7. Electrolytic Capacitor

   • Description: A 4.7µF electrolytic capacitor.
   • Pins: -, +
   • Properties: Capacitance: 4.7µF

8. MCP2515

   • Description: A CAN controller module.
   • Pins: INT, SCK, SI, SO, CS, GND, VCC, H, L

Wiring Details

LCD Display (16 pin)

• VSS connected to VSS of LCM1602 IIC
• VDD connected to VDD of LCM1602 IIC
• VO connected to V0 of LCM1602 IIC
• RS connected to RS of LCM1602 IIC
• R_W connected to RW of LCM1602 IIC
• E connected to E of LCM1602 IIC
• DB0 connected to D0 of LCM1602 IIC
• DB1 connected to D1 of LCM1602 IIC
• DB2 connected to D2 of LCM1602 IIC
• DB3 connected to D3 of LCM1602 IIC
• DB4 connected to D4 of LCM1602 IIC
• DB5 connected to D5 of LCM1602 IIC
• DB6 connected to D6 of LCM1602 IIC
• DB7 connected to D7 of LCM1602 IIC
• A connected to A of LCM1602 IIC
• K connected to K of LCM1602 IIC

ESP32

• GND connected to:
  • Pin 3 (out) of all Pushbuttons
  • GND of LCM1602 IIC
  • + of all Electrolytic Capacitors
  • GND of MCP2515
  • GND of Potentiometer
• D4 connected to Pin 2 (in) of Pushbutton and - of Electrolytic Capacitor
• D2 connected to Pin 2 (in) of Pushbutton and - of Electrolytic Capacitor
• D15 connected to Pin 2 (in) of Pushbutton and - of Electrolytic Capacitor
• D13 connected to Pin 2 (in) of Pushbutton and - of Electrolytic Capacitor
• VIN connected to:
  • pin1 of all Resistors
  • VCC of LCM1602 IIC
  • VCC of MCP2515
  • VCC of Potentiometer
• D12 connected to Output of Potentiometer
• D5 connected to CS of MCP2515
• D18 connected to SCK of MCP2515
• D19 connected to SO of MCP2515
• D21 connected to SDA of LCM1602 IIC
• D22 connected to SCL of LCM1602 IIC
• D23 connected to SI of MCP2515

LCM1602 IIC

• GND connected to GND of ESP32
• VCC connected to VIN of ESP32
• SDA connected to D21 of ESP32
• SCL connected to D22 of ESP32
• VSS connected to VSS of LCD Display
• VDD connected to VDD of LCD Display
• V0 connected to VO of LCD Display
• RS connected to RS of LCD Display
• RW connected to R_W of LCD Display
• E connected to E of LCD Display
• D0 connected to DB0 of LCD Display
• D1 connected to DB1 of LCD Display
• D2 connected to DB2 of LCD Display
• D3 connected to DB3 of LCD Display
• D4 connected to DB4 of LCD Display
• D5 connected to DB5 of LCD Display
• D6 connected to DB6 of LCD Display
• D7 connected to DB7 of LCD Display
• A connected to A of LCD Display
• K connected to K of LCD Display

Potentiometer

• GND connected to GND of ESP32
• Output connected to D12 of ESP32
• VCC connected to VIN of ESP32

Pushbutton

• Pin 3 (out) connected to GND of ESP32
• Pin 2 (in) connected to:
  • D4 of ESP32 and - of Electrolytic Capacitor
  • D2 of ESP32 and - of Electrolytic Capacitor
  • D15 of ESP32 and - of Electrolytic Capacitor
  • D13 of ESP32 and - of Electrolytic Capacitor
• Pin 1 (in) connected to pin2 of Resistor

Resistor

• pin1 connected to VIN of ESP32
• pin2 connected to Pin 1 (in) of Pushbutton

Electrolytic Capacitor

• + connected to GND of ESP32
• - connected to:
  • D4 of ESP32 and Pin 2 (in) of Pushbutton
  • D2 of ESP32 and Pin 2 (in) of Pushbutton
  • D15 of ESP32 and Pin 2 (in) of Pushbutton
  • D13 of ESP32 and Pin 2 (in) of Pushbutton

MCP2515

• GND connected to GND of ESP32
• VCC connected to VIN of ESP32
• CS connected to D5 of ESP32
• SCK connected to D18 of ESP32
• SO connected to D19 of ESP32
• SI connected to D23 of ESP32

Code

No code provided.