Circuit Documentation

Summary

This circuit involves an ESP32 microcontroller, multiple WS2812 RGB LED strips, a 5V adapter, a 24V power supply, buck converters, and various terminal blocks and splicing connectors. The ESP32 controls the LED strips, which are powered through a series of terminal blocks and splicing connectors. The circuit also includes a bi-directional level shifter to manage voltage levels between the ESP32 and the LED strips.

Component List

1. ESP32

   • Description: 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

2. WS2812 RGB LED strip

   • Description: Individually addressable RGB LED strip.
   • Pins: DIN, 5V, GND, DO

3. Power Supply 24 VDC

   • Description: Provides 24V DC power.
   • Pins: L, N, E, V+, V-

4. 5V Adapter

   • Description: Converts AC to 5V DC.
   • Pins: AC In 1, AC In 2, 5V, GND

5. Terminal Block KTB1 20A 6P

   • Description: Terminal block for electrical connections.
   • Pins: 1, 2, 3, 4, 5, 6

6. Splicing Connector WAGO 221

   • Description: Splicing connector for electrical connections.
   • Pins: Port 1, Port 2, Port 3, Port 4, Port 5

7. Adafruit TXB0104 4-channel Bi-Directional Level Shifter

   • Description: Level shifter for voltage translation.
   • Pins: HV, B1, B2, B3, B4, GND, OE, A4, A3, A2, A1, LV

8. Buck Converter

   • Description: Converts higher DC voltage to lower DC voltage.
   • Pins: IN+, IN-, OUT+, OUT-

9. Resistor

   • Description: 400 Ohms resistor.
   • Pins: pin1, pin2

Wiring Details

ESP32

• GND connected to 5V Adapter GND
• VIN connected to 5V Adapter 5V
• 3V3 connected to Adafruit TXB0104 4-channel Bi-Directional Level Shifter LV
• GND connected to Splicing Connector WAGO 221 Port 3

WS2812 RGB LED strip (Instance 1)

• DO connected to WS2812 RGB LED strip (Instance 2) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 4
• GND connected to Terminal Block KTB1 20A 6P Pin 6

WS2812 RGB LED strip (Instance 2)

• DIN connected to WS2812 RGB LED strip (Instance 1) DO
• DO connected to WS2812 RGB LED strip (Instance 3) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 3
• GND connected to Terminal Block KTB1 20A 6P Pin 5

WS2812 RGB LED strip (Instance 3)

• DIN connected to WS2812 RGB LED strip (Instance 2) DO
• DO connected to WS2812 RGB LED strip (Instance 4) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 5
• GND connected to Terminal Block KTB1 20A 6P Pin 4

WS2812 RGB LED strip (Instance 4)

• DIN connected to WS2812 RGB LED strip (Instance 3) DO
• DO connected to WS2812 RGB LED strip (Instance 5) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 6
• GND connected to Terminal Block KTB1 20A 6P Pin 5

WS2812 RGB LED strip (Instance 5)

• DIN connected to WS2812 RGB LED strip (Instance 4) DO
• DO connected to WS2812 RGB LED strip (Instance 6) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 2
• GND connected to Terminal Block KTB1 20A 6P Pin 5

WS2812 RGB LED strip (Instance 6)

• DIN connected to WS2812 RGB LED strip (Instance 5) DO
• DO connected to WS2812 RGB LED strip (Instance 7) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 3
• GND connected to Terminal Block KTB1 20A 6P Pin 4

WS2812 RGB LED strip (Instance 7)

• DIN connected to WS2812 RGB LED strip (Instance 6) DO
• DO connected to WS2812 RGB LED strip (Instance 8) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 5
• GND connected to Terminal Block KTB1 20A 6P Pin 6

WS2812 RGB LED strip (Instance 8)

• DIN connected to WS2812 RGB LED strip (Instance 7) DO
• DO connected to WS2812 RGB LED strip (Instance 9) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 2
• GND connected to Terminal Block KTB1 20A 6P Pin 1

WS2812 RGB LED strip (Instance 9)

• DIN connected to WS2812 RGB LED strip (Instance 8) DO
• DO connected to WS2812 RGB LED strip (Instance 10) DIN
• 5V connected to Terminal Block KTB1 20A 6P Pin 1
• GND connected to Splicing Connector WAGO 221 Port 1

WS2812 RGB LED strip (Instance 10)

• DIN connected to WS2812 RGB LED strip (Instance 9) DO
• DO connected to Adafruit TXB0104 4-channel Bi-Directional Level Shifter HV
• 5V connected to Terminal Block KTB1 20A 6P Pin 1
• GND connected to Splicing Connector WAGO 221 Port 1

Power Supply 24 VDC

• V+ connected to Buck Converter IN+
• V- connected to Buck Converter IN-

5V Adapter

• GND connected to ESP32 GND
• 5V connected to ESP32 VIN

Terminal Block KTB1 20A 6P (Instance 1)

• Pin 4 connected to WS2812 RGB LED strip (Instance 1) 5V
• Pin 6 connected to WS2812 RGB LED strip (Instance 1) GND

Terminal Block KTB1 20A 6P (Instance 2)

• Pin 3 connected to WS2812 RGB LED strip (Instance 2) 5V
• Pin 5 connected to WS2812 RGB LED strip (Instance 2) GND

Terminal Block KTB1 20A 6P (Instance 3)

• Pin 5 connected to WS2812 RGB LED strip (Instance 3) 5V
• Pin 4 connected to WS2812 RGB LED strip (Instance 3) GND

Terminal Block KTB1 20A 6P (Instance 4)

• Pin 6 connected to WS2812 RGB LED strip (Instance 4) 5V
• Pin 5 connected to WS2812 RGB LED strip (Instance 4) GND

Terminal Block KTB1 20A 6P (Instance 5)

• Pin 2 connected to WS2812 RGB LED strip (Instance 5) 5V
• Pin 5 connected to WS2812 RGB LED strip (Instance 5) GND

Terminal Block KTB1 20A 6P (Instance 6)

• Pin 3 connected to **WS2812 RGB LED strip (Instance 6) 5