So, you have built an electric cigar box guitar and started to get playing, only to realize that you don't know how. In fact, you can't even keep time. Your playing keeps getting faster and slower. It sounds like you need a metronome. A metronome is a device that helps you keep a steady time when you are playing an instrument by making a tick at a regular interval that you pre-set. If you have a little bit of electronics knowledge, it is very simple to build an electronic metronome.
- (x2) 10µF 35V 20% Radial-lead Electrolytic Capacitor (Model: 272-1025 | Catalog #: 272-1025)
- 10K-Ohm Horizontal-Style Trimmer (Model: 271-282 | Catalog #: 271-282)
- 1K Ohm 1/4-Watt Carbon Film Resistor (Model: 271-1321 | Catalog #: 271-1321)
- (x2) Red LED with Holder (Model: 276-084 | Catalog #: 276-084)
- 8-Ohm Mini Speaker (Model: 273-092 | Catalog #: 273-092)
- 500K Ohm Volume Control with Push Switch (Model: 271-002 | Catalog #: 271-002)
- Hexagonal Control Knob (Model: 274-407 | Catalog #: 274-407)
- Multipurpose PC Board with 417 Holes (Model: 276-150 | Catalog #: 276-150)
- Project Enclosure (5x2.5x2") (Model: 270-1803 | Catalog #: 270-1803)
- Fully Insulated 9V Battery Snap Connectors (Model: 270-325 | Catalog #: 270-325)
- Enercell® Alkaline 9 Volt Battery (Model: 23-853 | Catalog #: 23-853)
Step 2: Build the Circuit
Step 3: Wire the Pot
Wire a red wire to the center pin on the bottom of the potentiometer. Wire another red wire to either of the side pins.
Step 4: Mark and Drill
Step 5: Insert LEDs
Step 6: Mark and Dril More
Step 7: Potentiometer Time
Step 8: Draw a Star
Step 9: Drill
Step 10: Wire It Up
Wire the side connections of the potentiometer to the board as the potentiometer shown in the schematic.
Wire the red wire of the 9V battery connector to one of the red wire on the bottom of the potentiometer. Wire the other red wire from the potentiometer to power on the circuit board.
Finally, wire the black wire of the 9v battery connector to the ground plane on the circuit board.
Step 11: Glue
Step 12: Power
Turn it off.