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A Respberry Pi project

(2023-05-12 06:21:09) 下一個

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.

https://www.amazon.com/Raspberry-Pi-4-4G-Model/dp/B081YD3VL5/ref=sr_1_3?crid=XLL6T0JA19ID&keywords=raspberry+%E7%9A%AE4&qid=1683893481&sprefix=raspberry%E7%9A%AE4%2Caps%2C82&sr=8-3

(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。

https://www.raspberrypi.com/

 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。

https://www.google.com/search?q=how+to+install+os+on+raspberry+pi&rlz=1C1IHCB_enUS722US729&oq=how+to+install+os+on+ra&aqs=chrome.0.0i20i263i512j69i57j0i512l5j0i20i263i512j0i22i30l2.21378j1j7&sourceid=chrome&ie=UTF-8

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。

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