# 2nd try
[lien youtube](https://m.youtube.com/watch?v=B8ss4KqcuXU&pp=ugUEEgJlbtIHCQloAqO1ajebQw%3D%3D#bottom-sheet)
[patreon](https://www.patreon.com/GreatScott/posts/directional-119558088)
[](https://wiki.bilou.ch/uploads/images/gallery/2026-08/image-1787166240682.png)
#### Sinus generator
[github](https://github.com/whickmott/SimpleAD9833)
##### Basic Example
Here's a simple example of how to use the SimpleAD9833 library:
```
#include
const uint8_t CS_PIN = 10; // Chip select pin for the AD9833
SimpleAD9833 myWaveform(CS_PIN);
void setup() {
Serial.begin(115200);
SPI.begin()
myWaveform.begin();
myWaveform.setWaveform(SINE, 1000); // Set waveform to sine at 1 kHz
}
void loop() {
// Additional code for operation
}
```
The Coolest Speakers are TOO PRICEY? Let's Change that! (DIY or Buy)
You can get the Buy version here: (affiliate link)
https://s.click.aliexp...
You can get the Components for the DIY version here: (affiliate links)
* Ultrasonic Transmitter: https://s.click.aliexp...
* Arduino Nano: https://s.click.aliexp...
* AD9833: https://s.click.aliexp...
* MCP602: https://s.click.aliexp...
* LM393: https://www.ti.com/lit/ds/symlink/lm193.pdf?ts=1640569642482
[](https://wiki.bilou.ch/uploads/images/gallery/2026-08/image-1787166143352.png)
* Resistors: https://s.click.aliexp...
* Potentiometers: https://s.click.aliexp...
* H-Bridge: https://s.click.aliexp...
You can download the DIY project files here:
/ 119558088
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In this episode of "DIY or Buy", we will be having a closer look at directional speakers. The usage of such speaker is "fairly" new and quite interesting. As the name would suggest, they can playback audio in a very directional straight beam. So how does this sound? How does it work? And why is it so expensive and can we maybe create a cheaper DIY version? Let's find out!
Websites that were shown during the video:
https://cocosonics.mys...
https://github.com/The...
https://www.analog.com...
https://www.estudioele...
Thanks to JLCPCB for sponsoring this video.
Visit https://jlcpcb.com to get professional PCBs for low prices