added baby-sequencer project
added components according to existing schematic
changed some component values to more commonly available ones
added audio-mixer project
added headphone amplification section
added LM4880 amplifier
added volume control
fixed power led resistor value
fixed virtual ground for op amp
added TLE2426 device and TO-92 in line package
replaced opamp with OPA2132
removed unnecessary resistors
added volume control
added valentine project