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Author: Lucky Resistor

How to Debug Time Critical Code using an Oscilloscope

Posted on 2014-11-132019-07-24 by Lucky Resistor

From time to time you have to debug time critical code. If you are using interrupts, you are interested in the actual performance on the code. This is especially true, if you are using timed interrupts. In this cases, using the serial interface is impossible. If you write to the serial interface, the whole timing…

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A New Library for Meggy Jr RGB

Posted on 2014-11-132019-07-24 by Lucky Resistor

I planed to create a game as a gift and use the really great Meggy Jr RGB platform for it. See the picture above, it’s a great game machine powered by the ATmega328P (buy it here). You can use the Arduino IDE to program it. After assembling the device, I played a little bit around…

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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 2014-10-312019-07-24 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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