Circuit Documentation

Summary

This circuit involves a 555 Timer IC, a Tantalum Capacitor, a Rotary Potentiometer, a Resistor, a Tower Pro SG90 servo, and a 3.7V power source. The 555 Timer IC is configured to generate a PWM signal to control the servo motor. The potentiometer is used to adjust the frequency of the PWM signal, and the capacitor and resistor are used to set the timing characteristics of the 555 Timer IC.

Component List

555 Timer IC

• Description: A versatile timer IC used for generating precise time delays or oscillation.
• Pins: VCC+, Dis, Th, CV, Rst, Out, Trig, GND

Tantalum Capacitor

• Description: A capacitor with a capacitance of 100 Farads.
• Pins: +, -

PR-Rotary Potentiometer

• Description: A variable resistor used to adjust the frequency of the PWM signal.
• Pins: GND, OUT, VCC

Resistor

• Description: A resistor with a resistance of 1000 Ohms.
• Pins: pin1, pin2

Tower Pro SG90 Servo

• Description: A small servo motor used for precise control of angular position.
• Pins: Signal, +5V, GND

3.7V Power Source

• Description: A power source providing 3.7V.
• Pins: +, -

Wiring Details

555 Timer IC

• VCC+ is connected to:

  • +5V pin of the Tower Pro SG90 servo
  • pin2 of the Resistor
  • • pin of the 3.7V power source
  • Rst pin of the 555 Timer IC

• Dis is connected to:

  • pin1 of the Resistor
  • GND pin of the PR-Rotary Potentiometer

• Th is connected to:

  • • pin of the Tantalum Capacitor
  • Trig pin of the 555 Timer IC
  • OUT pin of the PR-Rotary Potentiometer

• Out is connected to:

  • Signal pin of the Tower Pro SG90 servo

• GND is connected to:

  • GND pin of the Tower Pro SG90 servo
  • • pin of the 3.7V power source
  • • pin of the Tantalum Capacitor

Tantalum Capacitor

• + is connected to:

  • Th pin of the 555 Timer IC
  • Trig pin of the 555 Timer IC
  • OUT pin of the PR-Rotary Potentiometer

• - is connected to:

  • GND pin of the 555 Timer IC
  • GND pin of the Tower Pro SG90 servo
  • • pin of the 3.7V power source

PR-Rotary Potentiometer

• GND is connected to:

  • pin1 of the Resistor
  • Dis pin of the 555 Timer IC

• OUT is connected to:

  • • pin of the Tantalum Capacitor
  • Th pin of the 555 Timer IC
  • Trig pin of the 555 Timer IC

• VCC is not connected in this circuit.

Resistor

• pin1 is connected to:

  • Dis pin of the 555 Timer IC
  • GND pin of the PR-Rotary Potentiometer

• pin2 is connected to:

  • +5V pin of the Tower Pro SG90 servo
  • VCC+ pin of the 555 Timer IC
  • • pin of the 3.7V power source
  • Rst pin of the 555 Timer IC

Tower Pro SG90 Servo

• Signal is connected to:

  • Out pin of the 555 Timer IC

• +5V is connected to:

  • pin2 of the Resistor
  • VCC+ pin of the 555 Timer IC
  • • pin of the 3.7V power source
  • Rst pin of the 555 Timer IC

• GND is connected to:

  • GND pin of the 555 Timer IC
  • • pin of the 3.7V power source
  • • pin of the Tantalum Capacitor

3.7V Power Source

• + is connected to:

  • +5V pin of the Tower Pro SG90 servo
  • pin2 of the Resistor
  • VCC+ pin of the 555 Timer IC
  • Rst pin of the 555 Timer IC

• - is connected to:

  • GND pin of the 555 Timer IC
  • GND pin of the Tower Pro SG90 servo
  • • pin of the Tantalum Capacitor

Code

No microcontroller code is provided for this circuit.