Specifications & Design

Specifications:

  • Small in size (7 in x 5 in x 3 in)
  • Lightweight (<1 pound)
  • Convert sound over 75 dBsl dynamic range into vibration
    • Vibration intensity will differ depending on sound intensity
    • Maximum safe level for vibration
  • Frequency range from 100 Hz – 24 kHz
  • Battery to operate for >= 15 hours
  • Temperature range from 0°F < T < 100°F
  • Fit onto vari
  • ous sized dog vests

Design Overview:

LTSpice Design
  • Simple single motor vibration circuit repeated five times on each breadboard
  • Voltage connected across the terminals of the vibration motor (polarity ignored)
  • Motors have operate under a voltage of 3.3V (input by the Arduino Uno via 2 AA batteries and a regulator)
  • NPN transistor is used to provide current amplification in the circuit
  • Diode connected reverse biased in parallel to the motor for protection against possible voltage spikes
  • Capacitor serves to absorb significant voltage spikes
  • Resistor to control the level of current flowing from the output of the transistor
  • Diode connected reverse biased in parallel to the motor for protection against possible voltage spikes
  • Capacitor serves to absorb significant voltage spikes
  • Resistor to control the level of current flowing from the output of the transistor