Fees for developers are known in the market
as microcomputers, with each passing day, become more and more popular. The
first batch of the third version of the beloved Raspberry Pi has already gone
to buyers. Meanwhile, the cost of the second pattern with the letter
"B" decreased significantly from dealers (the manufacturer is very
expensive service) - an excellent opportunity to get acquainted with this
gadget.
Externally, the Raspberry Pi 2 is a small
fee a little more than a credit card. The brain is our quad-core ARM Cortex-A7
with a frequency of 900MHz. If desired, you can overclock a bit with the help
of built-in utility. In addition, on-board memory is soldered gigabytes, of
which up to 128 MB can be identified for GPU.
Video output - HDMI. From the RCA analog,
in existence in earlier versions, the developers abandoned (but not quite:
using cunning cable can display analog signal on the old TV through a 3.5 mm
jack). But the board is equipped with four USB slots. Each port is capable of
producing a current up to 1.2 A. However, for this Raspberry, it needs to be powered
from the power supply 2A. And you can connect the Raspberry Pi 2 LCD display to the device.
On the downside, our model, in contrast to
the first generation, is a microSD slot (was once SD). This USB flash drive is
the primary boot loader, and a device for the default entry. Unfortunately,
Raspberry Pi 2 does not have wireless interfaces. There is only the Ethernet,
although it is possible to insert a Wi-Fi-dongle.
The main thing that distinguishes from
conventional computer Raspberry is the availability of additional findings. With
dedicated terminals with latches, you can connect the camera (CSI) and the
display (DSI). Both peripherals will work directly with the graphics core and
CPU. And then there are 40 pins GPIO: interface, general purpose IO. Use it to
connect everything and change the assignment of inputs-outputs on the fly. BTW,
you can select the Raspberry Pi 2 at Banggood. Besides, you can easily get
other electrical accessories (e.g. AC adapter 24V) there with high quality and reasonable prices.
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