PWM Signal Generator
![123.png](/proxy/?url=https://content.instructables.com/F3A/OHOM/JVE7PV5U/F3AOHOMJVE7PV5U.png&filename=123.png)
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Circuit is very easy to build all you need is:
- Arduino UNO
- OLED display module
- Few wires
- 3mm LED
- 8ohm speaker
- Servo motor
- 10k ohm pot
- 3x10k ohm trimmer pots
- 2x1uF caps
Program Circuit
Downloads
Filtering PWM
![247.png](/proxy/?url=https://content.instructables.com/F9E/KUVJ/JVE7PVSL/F9EKUVJJVE7PVSL.png&filename=247.png)
![136.png](/proxy/?url=https://content.instructables.com/FPI/1A6E/JVE7PVSN/FPI1A6EJVE7PVSN.png&filename=136.png)
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![filtr górno przepustowy.JPG](/proxy/?url=https://content.instructables.com/FVG/ZOVR/JVE7PV3U/FVGZOVRJVE7PV3U.jpg&filename=filtr górno przepustowy.JPG)
![filtr dolno przepustowy 1.JPG](/proxy/?url=https://content.instructables.com/F8E/4VJI/JVE7PV3L/F8E4VJIJVE7PV3L.jpg&filename=filtr dolno przepustowy 1.JPG)
What if you need sine wave or spike wave, you can easly filter those out of PWM
How Can I Use PWM
![PWM signal generator](/proxy/?url=https://content.instructables.com/FHS/BITW/JVE7PV4Q/FHSBITWJVE7PV4Q.jpg&filename=PWM signal generator)
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Answer is simple just hook it up to speaker, LED or servo