TouchTone 4029 DIY Kit

Marsoni

M251S

$89.00

Get it in 3 business days with 1 day shipping. Friday, May 29

TouchTone 4029 DIY KitTouchDescription: TouchTone is a feedback amplifier system using all six inverters (inverting amplifiers) of a CMOS 4049 chip. Use the inverters in combined digital analog mode. Two pairs are used as variable frequency oscillators (lower and high frequencies) and third pair is used in mixed amplifying filtering oscillating (feedback) mode to play around with the existing pads all over the system. Combining touchable pads in various manners can bring

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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This plate/platter is absolutely BEAUTIFUL! Perfect for my intention to give as a “HOME Warming” gift! EXCELLENT quality! The plate is packaged very well in a white box with plenty of room to write a note or be creative in the gift wrapping! I’m putting a photo on the box of the new HOME…already overflowing with LOVE! 🥰❤️❤️❤️🏡 Thank YOU for this absolutely perfect gift idea. I LOVE it!!! (I’m buying more to have on hand to welcome new neighbors. 😁)

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Reviewed in the United States on March 10, 2025

Verified Purchase

Rosanne Mangold

Dallas, US

★★★★★ 5

Rosanne —Kcmo

This plate is beautiful!! Great quality and was a huge hit for my friends 50th birthday present!

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Reviewed in the United States on July 1, 2025

Verified Purchase

Heath T.

Omaha, US

★★★★★ 5

Reliable sharps container.

Solid, reliable sharps container for home use. The lid locks securely and gives peace of mind, especially with kids around. It’s sturdy, holds a good amount, and doesn’t take up much space. Exactly what I needed, simple and safe.

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Reviewed in the United States on April 26, 2026

Verified Purchase

Kourtney Reopelle

Charlottesville, US

★★★★★ 5

Size matters

Have a nice container that can holds a lot but not so tall and skinny like most to the point that their top heavy and tip over. I feel like this one has the balance between being large without taking a too much space and also holding a lot

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Reviewed in the United States on April 25, 2026