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Word Alarm Clock with a Touch

A front cover for a classic word alarm clock with touch interface.

CFCF
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This project was created on 09/25/2017 and last updated a year ago.

Description

An addition to a classic word alarm clock: A touch front cover. It's made of a PCB, with some electronics on the back to recognize the touch at each word. So you're able to control the clock by just touching it. You can set the time, alarm time and many other things.
On the backside there are two MPR121 for 24 different areas, which can be recognized. Since they run only at 3.3V some more parts were needed. The communication with the clock runs over I²C.

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Gijs Withagen wrote 02/10/2019 at 20:06 • point

Do you share some more details anywhere? My daughter would love to have a clock like that next to her bed.

  Are you sure? yes | no

CF wrote 02/10/2019 at 20:13 • point

If you want a touch-version like the one shown here, I can't help you since the ICs I used for the touch-interface are not produced anymore. If you want a normal word-alarm clock, I can offer electronic kits and fine wooden housings. Check it out: https://du-kannst-mitspielen.de/elektronik/platine-wortwecker-135x135-tht/ You can also write me a mail and I can send you more details.

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chaterrony wrote 05/20/2018 at 19:19 • point

Nice feature. The MPR121 only works if you touch them? Is your surface conductive? Or does it work on distance too?

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CF wrote 09/27/2018 at 19:55 • point

You can set a threshold so that it works also on distance. The front panel is a PCB with copper areas surrounding each word on the backside.

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