![]() ![]() The music chip included in my kit is marked “H823” and plays “Happy Birthday”. Q7 also triggers reset on the CD4060 to restart the sequence. These are steered with diodes to drive the three LED combinations. The circuit only uses three significant outputs: Q5, Q6, Q7. I investigated this technique in more detail in LEAP#293 CD4060/RCOscillator.Īs the oscillator triggers the CD4060, the outputs cycle/ripple. The CD4060 in this circuit is configured as a free-running counter, driven by an RC oscillator. The CD4060 is a 14 stage ripple counter constructed of RS flip-flop units - see the functional diagram from the datasheet: This is the same kit covered by Julian Ilett: ![]() The music circuit runs completely independently of the CD4060-driven LED circuit. The kit includes a potted sound chip that plays “Happy Birthday”. It is an interesting demonstration of the CD4060 14-Stage Ripple Carry Binary Counter. It comes in a few variations, but essentially all the same circuit. This is a pretty common kit widely available from sellers on aliexpress, ebay and other outlets. Here’s a quick demo of the LED sequence in action. Learning how to use the CD4060 14-Stage Ripple Carry Binary Counter by building a music/LED-effects kit. ![]()
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