Sound sensor for KRCI robot starter for this is actually the microphone pre-amp IC LM358. Microphone is used as ain the form of electret microphone. Function mic pre-amp as a sensor of this vote to accept the applause sound as a signal to start the robot in KRCI. Sound sensor can work well on the DC voltage from 4.5 to 12 Volt.Ide use electret microphone pre-amp as the is because the needs of voice used to start the robot is a pat, start to get sufficient signal to a robot in the form electrical signal.
The Circuit Of Sound Sensor To Start KRCI Robot
Components List of Sensors Robot Voice To Start KRCI
- R1, R3, R4: 10K
- R2: 1K
- R5: VR220K
- C1: 0.1uF
- C2: 4.7uF/16V
- IC1: LM358
- Mic: Electret Microphone
VR1 onserves to control the gain or sensitivity of the microphone sound reception. Output circuit with sound sensor mic pre-amp is then connected to an analog port on the AVR is used as the processor on the KRCI robot.