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invention

Door chime with 2 blending sweet sounds

by f.j2

Published on November 27, 2017

This is a sweet and soft sounding door chime.

 

Visitors can use their smart phone to make their presence aware.

Duration: 5 minutes

How To Make It

STEP 1 : Gather all bits needed

Place them all on 2 mounting boards for your own convenience. The 2 barograph readout are only for illuminating purposes. You can omit these if you would like.

STEP 2 : Powering and usage

Use a wall outlet adapter for long usage, or a usb power bit. Pair your ble with your smartphone. Adjust the 2 oscillators to a nice tuning sound. Set both switches to square. Set the top timeout bit to off-on and the lower bit to on-off. Adjust the 2 timeout bits to achieve a proper delay between the 2 sounds. Adjust the filter cutoff to a warm sounding chime. Make your relatives aware to use their smartphone when they are at your door :-)

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