Metronome circuit is a much cheaper option compared to old mechanical metronome. With only few electronic components, we can build a low cost metronome. Here is the schematic diagram of the circuit:
You can build it with veroboard, matrix board, or even with no board at all: just solder each component leads and cables directly. If you build without board, you can secure the circuit with insulation tape, insulation glue, or epoxy resin for the best. You can use a any type of small plastic box for the enclosure.