- 25-pin PC serial port to MIDI synthesizer interface cable
- 8 note tune player
- 9-pin PC serial port to MIDI synthesizer interface cable
- Amiga MIDI interface
- Analog MIDI synthesizer
- Apple Mac to MIDI synthesizer interface cable
- Apple Macintosh MIDI interface schematic (basic version)
- Apple Macintosh MIDI interface schematic (deluxe version)
- Audible metronome
- BookPC Car MP3 Player
- Colour (Sound) Organ
- Colour organ light
- Compact Flash / IDE MP3 Player MKI
- Digital Guitar Tuner
- DIY Serial MIDI Interface (80C51/80C31 Version)
- Drum tone oscillators
- Dual phantom power pre-amp
- Electronic metronome
- Four channel fuzz box
- Guitar fuzz effect
- Guitar Reverb Pedal
- Guitar Tremolo Unit
- Guitar Vibrato Unit
- Metronome and pitch generator
- Microcontroller MIDI interface
- MIDI Controller Footpedal
- MIDI Drum Machine Analog Input Schematic
- MIDI drum machine project
- MIDI interface / cable tester
- MIDI keyboard
- MIDI keyboard circuit
- MIDI merger schematic
- MIDI status indicator
- MIDI to CV interface
- Midibox 64
- Mini metronome
- Motor speed controllers
- MP3 Player
- Musical Instrument (Expandable) Graphic Equaliser
- Octave screamer
- One component stepper motor driver
- Overload Voltage Protection with Automatic Reset
- Peak-reading meters
- PIC16F84 RF remote controller
- Power-line Appliance Controller
- Programmable light-activated relay
- Pulse Width Modulation DC Motor Control
- Pulse Width Modulator
- Pulse Width Modulator Motor Speed Control
- Pump controller
- Pushbutton one-shot and latch (PDF)
- PWM DC motor control with SG3525
- PWM DC Motor Speed Control
- PWM motor controller
- PWM Motor Speed Controller / DC Light Dimmer
- Relay delay circuit
- Rolling code 4-channel UHF remote control
- Serial MIDI interface
- Serial servo controller
- Servo pulse to PWM converter
- Several stepper motorol control circuits
- Simple 10 Stage Control Box
- Simple colour organ
- Simple line mixer
- Simple MIDI switcher
- Simple MIDI tester
- Simple Switched Servo Driver
- Solenoid starter
- Solid state relay (PDF)
- Sound Effects Generator
- Sound Effects Generator 2
- Sound operated switch
- Spring reverb
- Spring reverb unit
- Spring Reverb Unit For Guitar
- Standard MIDI to MIDI interface cable diagram
- Stepper motor controller
- Stepper motor controller
- Stepper motor driver
- Stepper Motor Driver using L298 and L297
- Stepper Motor Driver using TEA3718/3717
- Stepper motor positioner
- Switching solenoid driver
- Switch-on delay circuit
- Temperature monitor
- Theremin controller
- Thermoelectic controller (scriptable thermometer)
- Thermostat
- Three input first response monitor
- Touch switch
- Touch switch
- Touch Switches
- Transisor organ
- Transistor relay driver
- Ultra Simple Bass Guitar Compressor
- Vibrato Circuit for Guitar, Steel, Bass, Etc.
- Visual metronome
- Vocal zapper
- Voltage comparator switch
- Vox AC30 Guitar Amplifier Simulator
- Wave Multiplier for music synthesizers
- Wireless RF PWM dual motor controller
- Yet Another Mobile MP3 Player
- Zonk Machine and Treble Booster
Projetos de Circuitos Eletrônicos para Aplicações de Áudio e Música
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