12$ 30MHz signal generator using Arduino
A signal generator is an electronic device that generates electronic signals and waveforms. These electronic signals are either repeating or non-repeating as per the requirements and field of applications. It is generally used in designing, testing, troubleshooting and repairing electronic devices.
This instructable shows a full guide on how to make a 30 MHz signal generator for 12$, using an Arduino and an AD9850 DDS synthesizer module. The circuit is pretty simple and small enough to fit in your pocket. Kedar Nimbalkar, the author of the instructable, says:
A precession signal generator is very easy and affordable to make using an Arduino and DDS synthesizer (ad9850) . It’s World’s first smallest portable signal generator.
You can make decent 0 -30 MHZ frequency Signal generator only in 12$ .
1. Arduino Pro mini
2.AD9850 (DDS Synthesizer)
3.16×2 LCD Display ( Hitachi HD 44780 )
5. CP2102 (or any USB to serial converter)
I think you are familiar with all of the above items except the AD9850 (DDS Synthesizer). First of all, you need to know what does DDS stand for.
Direct digital synthesizer (DDS) is a type of frequency synthesizer used for creating arbitrary waveforms from a single, fixed-frequency reference clock. A basic Direct Digital Synthesizer consists of a frequency reference, a numerically controlled oscillator (NCO) and a digital-to-analog converter (DAC).
AD9850 (DDS Synthesizer):
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