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RELATED GUIDES

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I2C addresses!
I2C addresses from 0x00 to 0x7F (inclusive)
by lady ada
I2C is incredibly popular because it uses only 2 wires, and like we said, multiple devices can share those wires, making it a great way to connect tons of sensors, drivers, expanders, without using all the microcontroller pins. The only bad news about I2C is that each I2C device must have a unique address - and the addresses only range from 0 to 127 (aka 0 to 0x7F hex). Since we deal with so many I2C devices we thought it would be handy to have a table with all the most common sensors and modules we encounter, and their I2C address!
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MCP4725 12-Bit DAC with Raspberry Pi
Add a DAC (digital to analog convertor) to your Raspberry Pi
by Kevin Townsend
This tutorial will show you how you can add a DAC (digital to analog convertor) to your Raspberry Pi with Adafruit's easy to use MCP4725 12-bit DAC breakout.
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TTL Serial Camera
Snap, Snap!
by lady ada
This guide is for our new TTL serial camera module with NTSC video output. These modules are a nice addition to a microcontroller project when you want to take a photo or control a video stream. The modules have a few features built in, such as the ability to change the brightness/saturation/hue of images, auto-contrast and auto-brightness adjustment, and motion detection.
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EL Wire
Working with Electroluminescent Wire
by lady ada
EL Wire, also known as Electroluminescent wire, is a stiff wire core coated with phosphor and then covered with a protective PVC sheath. When an AC signal is applied to it, it glows a cool neon color. Find out how to solder, power, and work with EL Wire in your next project.