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RELATED GUIDES

Pro Trinket as a USB HID Mouse
Use Pro Trinket as a USB mouse device on your PC
by Mike Barela
Pro Trinket can provide emulated PC USB mouse input in your next project. The small size and low parts count makes it a natural.
Talking d20 20-Sided Gaming Die
“Greetings, adventurer!”
by Phillip Burgess
The 20-sided die — or “d20” as it’s known to tabletop gamers — is an icon of geek culture. We’ll 3D-print a jumbo d20 and outfit it with electronics to announce your rolls (and a few surprises).
NEW
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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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.