The badge consists of eight LEDs arranged in the shape of a heart. One LED is lit
at a time and this 'chases' round the shape. It would be easy to adapt this
project to create other shapes with the eight LEDs.
ribbon cable 9-way about 1 metre (to connect badge to main circuit)
stripboard: 16 rows × 19 holes for circuit
stripboard: 10 rows × 9 holes for badge
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