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.