Everyone knows and loves Raspberry
Pi, but what if you didn’t need additional peripherals to make it wireless. The
Raspberry Pi 3 is here to provide you with the same Pi as before but now with
double the ram and a much faster processor. The credit-card sized computer is
capable of many of the things that your desktop PC does, like spreadsheets,
word-processing and playing high-definition video and games. It can run several
flavors of Linux (and even Windows 10 free-of-charge) and is being used to
teach kids all over the world how to program… Oh yeah, and it still does all
that for about $40.
The secret sauce that makes this computer so small and
powerful is the Broadcom BCM2837, an ARM Cortex-A53 64bit Quad Core Processor
System-on-Chip. The GPU provides Open GL ES 2.0, hardware-accelerated OpenVG,
and 1080p30 H.264 high-profile decode and is capable of 1Gpixel/s, 1.5Gtexel/s
or 24 GFLOPs of general purpose compute. What’s that all mean? It means that if
you plug the Raspberry Pi 3 into your HDTV, you could watch BluRay quality
video, using H.264 at 40MBits/s. The biggest change that has been enacted with the Raspberry
Pi 3 is an upgrade to a next generation main processor and improved
connectivity with Bluetooth Low Energy (BLE) and BCM43143 WiFi on board.
Additionally, the Raspberry Pi 3 has improved power management, with an
upgraded switched power source up to 2.5 Amps, to support more powerful
external USB devices. The Raspberry Pi 3’s four built-in USB ports provide enough
connectivity for a mouse, keyboard, or anything else that you feel the RPi
needs, but if you want to add even more you can still use a USB hub. Keep in
mind, it is recommended that you use a powered hub so as not to overtax the
on-board voltage regulator. Powering the Raspberry Pi 3 is easy, just plug any
USB power supply into the micro-USB port. There’s no power button so the Pi
will begin to boot as soon as power is applied, to turn it off, simply shut
down the Pi 3, then remove power. The four built-in USB ports can even output
up to 1.2A enabling you to connect more power hungry USB devices (This does
require a 2Amp micro USB Power Supply). On top of all that, the low-level peripherals on the Pi make
it great for hardware hacking. The 0.1" spaced 40-pin GPIO header on the
Pi gives you access to 27 GPIO, UART, I2C, SPI as well as 3.3 and 5V
sources. Each pin on the GPIO header is identical to its predecessor the Model
B+.