Raspberry Pi 3 As with a regular PC, the first thing you do when you get a new device is to install an operating system on it and do some initialization. Simpler than a PC, the Raspberry Pi is a fixed-configuration hardware board and does not have as many hardware combinations as a PC, so it is very convenient to build a dedicated system for it.
Recently, I wanted to learn IoT development, so I started a Raspberry Pi and spent 162 yuan in Xianyu to get a second-hand Raspberry Pi 3B with a screen. (It is said that the screen can touch the screen, and the driver needs to be installed, and I don't understand it too much)
Preparation:
- Micro SD card with NOOBS
- Micro USB Power Supply (2.1 A)
- TV or monitor and HDMI cable
- Keyboard and mouse
Official website introduction:The hyperlink login is visible.
Motherboard illustration:
Power supply voltage: 5V2A is enough, I use Huawei charger, as shown in the figure below:
99% of the failures of the Raspberry Pi come from the 5V supply. If the Raspberry Pi fails (freezes, keyboard and mouse not working, display dims or distortions, terminal programs appear garbled, cannot be turned on, running programs freeze, USB devices cannot be recognized or not working, network failures, etc.) Check the power supply first!
There are two indicator lights on the Raspberry Pi, red and green.
Red light: Normal is always on. This is a power-related indicator, so if this light is abnormal, it is a power problem (including but not limited to, the current is too small. For example: the USB port is attached to a high-power device, such as a mobile hard drive)
Green light: Flashing is normal. Flashing instructions are normal reading of memory card contents.
LED | Color | function | Normal state | ACT | Green | card status | Flashing: SD card is active (like a computer's hard drive light) | PWR | Red | power | No flickering: Normal | FDX | Orange | full duplex | Bright: Full Duplex / Not Bright: Half Duplex | LNK | Orange | link | Light: The network connection is successful | 100 | Orange | 100 Mbps | Bright: 100 Mbps / Unlit: 10 Mbps |
Next, I want to find an SD card, install the system and try it, and the article will be here first.
(End)
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Posted on 8/17/2019 10:50:00 AM
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