Introduction: Guitar Chromatic Tuner
this tuner is tested on bass guitar. it's not perfect but works for me.
Supplies
2 Resistor
1 Capacitor
1 Operational amplifier
1 Arduino
1 LCD Display
Step 1:
simple non-inverting operational amplifier. powered by 5 volt from Arduino.
Step 2:
opamp output to 7 pin
Step 3:
code for arduino
Attachments
Step 4:
you can add switch for bypass