# Arduino Lesson 10. Making Sounds ## Overview In this lesson, you will learn how to make sounds with your Arduino. First you will make the Arduino play a 'musical' scale and then combine this with a photocell, to make a Theremin-like instrument that changes the pitch played as you wave your hand over the photocell. ![](https://cdn-learn.adafruit.com/assets/assets/000/002/293/medium800/learn_arduino_overview.jpg?1396781409) - [Next Page](https://learn.adafruit.com/adafruit-arduino-lesson-10-making-sounds/parts.md) ## Featured Products ### Piezo Buzzer [Piezo Buzzer](https://www.adafruit.com/product/160) Piezo buzzers are used for making beeps, tones and alerts. This one is petite but loud! Drive it with 3-30V peak-to-peak square wave. To use, connect one pin to ground (either one) and the other pin to a square wave out from a timer or microcontroller. For the loudest tones, stay around 4 KHz,... In Stock [Buy Now](https://www.adafruit.com/product/160) [Related Guides to the Product](https://learn.adafruit.com/products/160/guides) ### Photo cell (CdS photoresistor) [Photo cell (CdS photoresistor)](https://www.adafruit.com/product/161) CdS cells are little light sensors. As the squiggly face is exposed to more light, the resistance goes down. When it's light, the resistance is about ~1KΩ, when dark it goes up to ~10KΩ. To use, connect one side of the photocell (either one, it's symmetric) to power... In Stock [Buy Now](https://www.adafruit.com/product/161) [Related Guides to the Product](https://learn.adafruit.com/products/161/guides) ### Premium Male/Male Jumper Wires - 40 x 6" (150mm) [Premium Male/Male Jumper Wires - 40 x 6" (150mm)](https://www.adafruit.com/product/758) Handy for making wire harnesses or jumpering between headers on PCB's. These premium jumper wires are 6" (150mm) long and come in a 'strip' of 40 (4 pieces of each of ten rainbow colors). They have 0.1" male header contacts on either end and fit cleanly next to each other... Out of Stock [Buy Now](https://www.adafruit.com/product/758) [Related Guides to the Product](https://learn.adafruit.com/products/758/guides) ### Half Sized Premium Breadboard - 400 Tie Points [Half Sized Premium Breadboard - 400 Tie Points](https://www.adafruit.com/product/64) This is a cute, half-size breadboard with 400 tie points, good for small projects. It's 3.25" x 2.2" / 8.3cm x 5.5cm with a standard double-strip in the middle and two power rails on both sides. You can pull the power rails off easily to make the breadboard as... In Stock [Buy Now](https://www.adafruit.com/product/64) [Related Guides to the Product](https://learn.adafruit.com/products/64/guides) ### Adafruit METRO 328 Fully Assembled - Arduino IDE compatible [Adafruit METRO 328 Fully Assembled - Arduino IDE compatible](https://www.adafruit.com/product/50) We sure love the ATmega328 here at Adafruit, and we use them _a lot_ for our own projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a Out of Stock [Buy Now](https://www.adafruit.com/product/50) [Related Guides to the Product](https://learn.adafruit.com/products/50/guides) ## Related Guides - [Arduin-o-Phone](https://learn.adafruit.com/arduin-o-phone-arduino-powered-diy-cellphone.md) - [SMS Texting Pet Food Dish](https://learn.adafruit.com/sms-texting-pet-food-dish.md) - [Arduino Lesson 11. LCD Displays - Part 1](https://learn.adafruit.com/adafruit-arduino-lesson-11-lcd-displays-1.md) - [Arduino Lesson 17. Email Sending Movement Detector](https://learn.adafruit.com/arduino-lesson-17-email-sending-movement-detector.md) - [1,500 NeoPixel LED Curtain with Raspberry Pi and Fadecandy](https://learn.adafruit.com/1500-neopixel-led-curtain-with-raspberry-pi-fadecandy.md) - [Light Meter](https://learn.adafruit.com/light-meter.md) - [Ladyada's Learn Arduino - Lesson #1](https://learn.adafruit.com/ladyadas-learn-arduino-lesson-number-1.md) - [How to program a Zumo Robot with Simulink](https://learn.adafruit.com/zumo-robot-control-with-simulink.md) - [Adafruit PCA9685 16-Channel Servo Driver](https://learn.adafruit.com/16-channel-pwm-servo-driver.md) - [Mini Thermal Receipt Printers](https://learn.adafruit.com/mini-thermal-receipt-printer.md) - [Arduino Prototyping Mounting Plate](https://learn.adafruit.com/arduino-prototyping-mounting-plate.md) - [LSM303 Accelerometer + Compass Breakout](https://learn.adafruit.com/lsm303-accelerometer-slash-compass-breakout.md) - [Memories of an Arduino](https://learn.adafruit.com/memories-of-an-arduino.md) - [Automatic Monitor Color Temperature Adjustment](https://learn.adafruit.com/automatic-monitor-color-temperature-adjustment.md) - [FTDI Friend](https://learn.adafruit.com/ftdi-friend.md)