Recently, I was working on the serial communication between two devices and I found that these two devices are not working on same voltages. That’s why the signal generated from one device will not be read correctly from the other device. It means we need a voltage signal translator. There are many voltage signal translator available in the market but, it takes more time and more money. Here is a simple and easy method which takes less time and also cheap in cost to convert voltage signal level. Which is following…

5V to 3.3V signal converter

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3.3V to 5V signal converter

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I hope you will enjoy this 🙂