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DIY Musical Doorbell

DIY Musical Doorbell

“Learn how to make a simple musical bell using the UM66T melody generator IC. The Melody Generator will play Beethoven’s Fr Elise when triggered since it uses the UM66T-19L. There are different versions of this IC, each configured …

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How to Make a Siren Generator

How to Make a Siren Generator

“Learn How to Make a DIY Electronic Siren Generator circuit that can produce police car siren, emergency ambulance siren & fire brigade sound using the IC UM3561a Siren Tone Generator. The circuit only requires a few components and can be put …

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Arduino CAP-ESR-FREQ Meter

Arduino CAP-ESR-FREQ Meter

“CAP-ESR-FREQ meter with an Arduino Duemilanove. In this instructable you can find all neccessary information about making a metering instrument based on an Arduino Duemilanove. With this instrument you can measure capacitor values in nanofarads and microfarads, the …

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