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only needs 700mA, and the 3B+ type requires 2.5A. The chargers of many Android
mobile phones can provide the necessary voltage and current for the Raspberry Pi.
The current demand of the Raspberry Pi is also related to the connected external
device. It is recommended that it should be calculated in advance when using it.
Choose a suitable current (power) power supply for the Raspberry Pi. When the
external device has a large power, an independent power supply should be used Power
supply for external devices.
(8) Micro SD card slot:
The SD card slot is located on the back of the Raspberry Pi motherboard. The
SD/MicroSD card is an essential storage part of the Raspberry Pi. It is used to install
the operating system and store data. The capacity of the SD card should be above
2GB. In order to have a better experience, it is recommended to equip your Raspberry
Pi with a large-capacity (above 16G) high-speed (Class10 or above) SD card.
(9) Bluetooth port:
The Bluetooth function allows the Raspberry Pi to connect with
Bluetooth-enabled devices (such as a mouse, keyboard, and handle).
(10) PoE HAT port:
Active Ethernet (Power Over Ethernet, PoE) refers to a technology that uses
Ethernet for power transmission. On the basis of the original Micro USB and GPIO
power supply, the Raspberry Pi 3B+ type adds a new power supply method over
Ethernet. Users can use the network cable to supply power to the Raspberry Pi
without the need to configure an additional power supply, which is convenient for
certain application scenarios.
(11) MIPI DSI display port:
You can connect the LCD display to the Raspberry Pi, which is generally used
for embedded product development. Under normal circumstances, the HDMI
interface can already meet the demand.