This blog was published on 中坦 , not in 家壇last year.
This is a modified version.
Raspberry Pi is a very popular single board computer in hobby electronics. 它有26 GPIO（genaral purpose input output) pins, so you could make lots of projects.
https://en.wikipedia.org/wiki/Raspberry_Pi
我的這個project就是一個display panel，just like a computer monitor. 是用Raspberry Pi (around $50， 2GB （有4GB， 8GB version))做的.
（several years ago, 8GB version was $80, I bought two, now it is doubled in price, so try to look around, find a cheap one befire buying).
It runs in Linus operating system, just like Windows。
你隻要加上keyboard，mouse，monitor，電源，再把網上的operating system download 到一個microUSB card 上 就可以當一個computer使了（board上有WiFi）,而且還可以做一些小project.
Operating system could be download from:
https://www.raspberrypi.com/software/
For Linus operating system, the book by Simon Monk, is well writen. I also have two other books from the same author.
Display panel 是用9個 64x64 RGB matrix display board組成，所以總的resolution是192x192 pixels). Its size is 57x57 cm。
You could use is as a dispaly. I used it on Christmas days. You could also send a picture of words in someone's birthday.
用這些command:
上麵display上的英語是這樣的commands( 總共4行字），從sudo 到 255，0，0 ( 255, 0, 0 是RGB color(從0到255). By changing 3 numbers, you could get diffent colors). Command你必須自己typing, 下一次你想type the same command, 你可按key board 上的向上的箭頭，它在memory裏:
它還可以顯示：
或者JPGfiles：
用這個command：
它的背後是這樣的（用了3天裝好的, 買的鋁棍，鋁板，青銅板把9個小的board裝成一個大的，大約$300）：
單個RGB matrix board是這樣的（這個是另一個 64x128 matrix board,不是上圖上用的64x64), 下圖是示意圖：
反麵：
這個192x192 matrix display board的電源是我用一個壞了的computer power supply改裝的：
這個是 Raspberry Pi （底下的綠board）（左下插頭是電源插頭，右下插頭是key board&hdmi monitor 插頭), 上麵3根ribbon cable是讓display panel 顯示用的：
Raspberry Pi的電源是這樣的：
Linus 的operating system 的 window 是這樣的：
Click on the Respberry Pi, 你會看到，像PC 一樣:
Click on globe sign, 你可上網：
網上有許多怎麽裝Operating system的網頁。
Raspberry Pi projects on youtube:
https://www.youtube.com/results?search_query=raspberry+pi+projects
原文：
https://blog.wenxuecity.com/blog/frontend.php?act=article&blogId=40376&date=202206&postId=5048
Have fun with Raspbery Pi!
謝謝觀看。
