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How to Make a Simple Musical Greeting Card

Last Updated on November 3, 2020 by Admin Leave a Comment

It is fairly simple to construct a ‘singing’ melodious greeting card, as explained in the following article.

You can replicate this greeting card design through matching chips which carry about 30 popular melodious song versions in its UM3166-xx fully autonomous melody generator chip.

musial greeting card compressed
You can also use IC UM3561 instead of the one shown above

This electronic chip works at an incredibly low battery voltage of around 1.3 to 3 V. Nevertheless, it manages to operate a tiny piezo-buffer from antiphase output ports 2 and 4.

A piezo element is used for generating the musical output from the IC. If you think the output volume is not big enough, you can use a small audio amplifier with a small 8 ohm speaker to increase the volume

You can ensure a greeting card melody plays in a loop by bridging terminal 3 to 7 instead of 1.

The following table provides the list of tunes and popular melodies programmed in the respective UM3166 ICs.

UM36 melody songs compressed

The IC pinout details is shown in the following diagram

UM3561 pinout compressed

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About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
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