UM66 is CMOS technology melody integrated circuit especially used in to give the output from speaker, when we reset the circuit UM66 will play the melody. The following schematic is for UM66 or BT66 musical IC. You need very few components to make this circuit. Pin configuration for UM66 is. Here is one listing from China for the UM66, and another one from France. Some IC become obsolete and may not be available in market.

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Tuesday, January 1, The UM66 IC looks like a transistor with 3 terminals but it is a complete miniature tone generator with a tune and they come in variety of different tunes. Make sure that u,66 do not give more than 4. Still not working leave a comment and I will help you.

UM66 IC Datasheet | Melody IC Pin Diagram

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The beat generator is also a programmed divider which contains 15 available beats. So my question kc Building a circuit on a breadboard November 8, Note that there are some unscrupulous semiconductor vendors on eBay so be careful, I would always buy from somewhere like Digikey, Mouser, Farnell, etc if you can I had a quick look but couldn’t see anything particularly suitable You could quite easily make a similar circuit using a small micro, a timer or two, using discrete transistors, etc.


Do not exceed 4.

integrated circuit – Replace UM 66 IC – Electrical Engineering Stack Exchange

I find only endless results, a lot of models of ICs who don’t even remote to UM SPI Module of Arduino. Here is one listing from China for the UM66, and another one from France. Options easily available from any large vendor like Digikey that come to mind are things like a timer IC or a small microcontroller like a PIC10F.

Pin configuration for UM66 is given below: By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

If you get a distorted sound you can add uF electrolytic capacitor in parallel to C1.

Whistle to Beep Circuit. UM66 has an inbuilt beat and tone generator.

Melody begins from the first note if power is reseted. How to use infrared based music transmitter and receiver. The melody will be available at pin 3 of UM66 and here it is amplified by using Q1 to drive the speaker.


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How to use UM66 or BT66 Musical IC

Plz give me the circuit diagram of door bell with BT66t19lresistance ohm, bc So, someone told ci to look for: Touch Controlled Musical Bell. If the musical bell is not working check the emitter, base, collector pins of transistor and pins of IC UM66 are connected properly.

This IC, with its three legs, looks like a transistor.

Now connect the battery and hear the melody sound. Thanks for the tips!

UM66 Melody Generator IC

This site uses cookies. The speaker can be driven by an external npn transistor connected to the output of UM It is not possible to store our own music in UM Usually this IC is used in greeting cards to make melody sound.

This circuit uses a 3 terminal IC UM Infrared sensor with PWM.