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From Prototype to the Final Device

Posted on 2014-11-082014-11-08 by Lucky Resistor

After successful testing of the prototype, I created the final device. I added a final page to the Cat Protector project describing step by step how the final device is built from the prototype. You can read all details here: From the Prototype to the Final Device, or start here with the project overview.

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Using the TDA 7052 as Amplifier

Posted on 2014-11-082014-11-28 by Lucky Resistor

The LM386N-1 I used before worked well, but has some disadvantages. There was a hearable distortion in the sound and I needed more amplification to create the required loudness. I found the TDA 7052 chip, which was formerly produced by Philips, but now by NXP semiconductors. It contains everything required for an amplifier. You just…

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The Cat Protector Project

Posted on 2014-11-062014-11-06 by Lucky Resistor

If you own a cat, you know even if your cat is well brought-up, laws are only valid as long you are at home or even in the same room. The goal of this project was to create a small device, which detects movement in protected areas (e.g. tables) and speak your usual phrases in your voice…

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How and Why to use Namespaces

Posted on 2014-10-312022-09-04 by Lucky Resistor

Namespaces are a feature of C++ which address the problem of name conflicts. There is a “global” namespace, where everything lives which was declared without namespace. Especially the Arduino environment declares a huge amount of variables and constants there, so it is a good practice to put everything you write in a own namespace. Namespaces…

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