Circuit Documentation

Summary

This circuit is designed to control multiple servos using a 16-Channel PWM Servo Driver, which is interfaced with an ESP8266 NodeMCU microcontroller. The circuit is powered via a USB power source. The ESP8266 NodeMCU communicates with the PWM Servo Driver over I2C to control the servos.

Component List

1. 16-Channel PWM Servo Driver

   • Description: A driver that can control up to 16 PWM devices such as servos.
   • Pins: V+, VCC, SDA, SCL, OE, GND, Vin+, Vin-, PWM1 to PWM16

2. Servo (6 units)

   • Description: Standard servo motor.
   • Pins: GND, VCC, PWM

3. USB Power

   • Description: Provides power to the circuit.
   • Pins: +, -

4. ESP8266 NodeMCU

   • Description: A microcontroller with Wi-Fi capabilities.
   • Pins: D0, D1, D2, D3, D4, 3V3, GND, D5, D6, D7, D8, RX, TX, A0, RSV, SD3, SD2, SD1, CMD, SD0, CLK, EN, RST, VIN

Wiring Details

16-Channel PWM Servo Driver

• SDA connected to D1 of ESP8266 NodeMCU
• SCL connected to D2 of ESP8266 NodeMCU
• GND connected to:
  • GND of ESP8266 NodeMCU
  • GND of all Servos
• VCC connected to 3V3 of ESP8266 NodeMCU
• V+ connected to VCC of all Servos
• Vin+ connected to - of USB Power
• Vin- connected to + of USB Power
• PWM1 connected to PWM of Servo 1
• PWM3 connected to PWM of Servo 2
• PWM4 connected to PWM of Servo 3
• PWM5 connected to PWM of Servo 4
• PWM6 connected to PWM of Servo 5
• PWM7 connected to PWM of Servo 6

Servo 1

• GND connected to GND of 16-Channel PWM Servo Driver
• VCC connected to V+ of 16-Channel PWM Servo Driver
• PWM connected to PWM1 of 16-Channel PWM Servo Driver

Servo 2

• GND connected to GND of 16-Channel PWM Servo Driver
• VCC connected to V+ of 16-Channel PWM Servo Driver
• PWM connected to PWM3 of 16-Channel PWM Servo Driver

Servo 3

• GND connected to GND of 16-Channel PWM Servo Driver
• VCC connected to V+ of 16-Channel PWM Servo Driver
• PWM connected to PWM4 of 16-Channel PWM Servo Driver

Servo 4

• GND connected to GND of 16-Channel PWM Servo Driver
• VCC connected to V+ of 16-Channel PWM Servo Driver
• PWM connected to PWM5 of 16-Channel PWM Servo Driver

Servo 5

• GND connected to GND of 16-Channel PWM Servo Driver
• VCC connected to V+ of 16-Channel PWM Servo Driver
• PWM connected to PWM6 of 16-Channel PWM Servo Driver

Servo 6

• GND connected to GND of 16-Channel PWM Servo Driver
• VCC connected to V+ of 16-Channel PWM Servo Driver
• PWM connected to PWM7 of 16-Channel PWM Servo Driver

USB Power

• - connected to Vin+ of 16-Channel PWM Servo Driver
• + connected to Vin- of 16-Channel PWM Servo Driver

ESP8266 NodeMCU

• D1 connected to SDA of 16-Channel PWM Servo Driver
• D2 connected to SCL of 16-Channel PWM Servo Driver
• GND connected to GND of 16-Channel PWM Servo Driver
• 3V3 connected to VCC of 16-Channel PWM Servo Driver

Code

No code provided for this circuit.