我的树莓派一般用来学习python，因为一直放在桌面上感觉非常枯燥，决定加一个屏幕用来显示天气情况。
闲话不多说，进入正题，先上一个成品图片最底下是一个硬盘，中间是树莓派，有一个18B20传感器测量室温。
首先硬件的情况:树莓派使用的是4B1G版本（购买比较早，抢购的，130元抢购的，现在价格很高了，可以树莓派其他版本代替）；硬盘为250g机械硬盘（因为4B支持usb启动，所以我一直都没用内存卡）；树莓派外壳，已被积木包围，建议只购买散热片和风扇，直接使用积木作为外壳；积木直接大家去拼多多或者淘宝搜索微粒积木就可以，我这是买的8毫米500粒混色，不到五块钱，喜欢纯色的可以去买纯色。
屏幕采用的是淘晶驰串口屏2.2寸无触摸，咸鱼30元买的，需要下载软件开发，如有有需要这个UI的请留言。
程序话不多说，直接代码走起，其中天气部分为爬虫爬取（如有需要天气接口的请留言哦）下面放代码：GNU nano 3.2 1.txt 已更改 w#!/usr/bin/python3# coding:utf-8#采用爬虫模式from apscheduler.schedulers.blocking import BlockingSchedulerimport datetimeimport serialimport timeimport refrom urllib import request# 打开串口ser = serial.Serial("/dev/ttyAMA0", 9600)ser.flushInput()try: url = 'https://tianqi.moji.com/today/china/shandong/weifang' headers = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36','Referer':'https://tianqi.moji.com/forecast7/china/shandong', 'Host': 'tianqi.moji.com','sec-ch-ua': ' "Not;A"Brand";v="99", "Google Chrome";v="85", "Chromium";v="85" ','sec-fetch-site':'cross-site'} req = request.Request(url,headers=headers) resp = request.urlopen(req) #print(resp.read().decode('utf-8')) s = resp.read().decode('utf-8') ret = re.findall(r'<divsclass="detail_time clearfix">.*?年(.*?) .*?n(.*?)n</div>.*?<div class="detail_wea clearfix">.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)</b>.*?<span>湿度 (.*?)%</span>.*?<em>(.*?) (.*?)级</em>.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)°</b>.*?<p><strong>日出 (.*?)</strong>.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)°</b>.*?<p><strong class="sun_down">日落 (.*?)</strong></p>.*?<b>(.*?)°</b>.*?<strong>(.*?)°</strong>.*?<span class="week">.*?<span class="week">周(.*?)</span>.*?<div class="$ b=['1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23'] d = dict(zip(b,ret[0])) real='page0.t1.txt="'+d['4']+'℃ '+d['6']+'%"' ser.write(real.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) data='page0.t4.txt="'+d['5']+'"' ser.write(data.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) data1='page0.t5.txt="'+d['7']+'"' ser.write(data1.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) data2='page0.t6.txt="'+d['8']+'级"' ser.write(data2.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff'))except: data='' ser.write(data.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff'))data='page0.t0.txt="'+time.strftime('%m月%d日')+'"'ser.write(data.encode("GB2312"))ser.write(bytes.fromhex('ff ff ff'))if time.strftime('%u')=="0": week='page0.g0.txt="今天是周末耶！"'if time.strftime('%u')=="1": week='page0.g0.txt="今天星期一，美好的一周又开始了！"'if time.strftime('%u')=="2": week='page0.g0.txt="今天星期二，仍然需要努力工作！"'if time.strftime('%u')=="3": week='page0.g0.txt="今天星期三，本周马上过半了！"'if time.strftime('%u')=="4": week='page0.g0.txt="今天星期四，还有两天就周末了！"'if time.strftime('%u')=="5": week='page0.g0.txt="今天星期五，还有一天就休息了！"'if time.strftime('%u')=="6": week='page0.g0.txt="今天星期六，明天就可以休息了！"'ser.write(week.encode("GB2312"))ser.write(bytes.fromhex('ff ff ff'))def aps_test():#每秒刷新 ti=time.strftime('%H:%M:%S') begin='page0.t3.txt="'+ti+'"' ser.write(begin.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) tim=time.strftime('%H:%M') #print(tim) if tim=="18:00": begin='dims=0' ser.write(begin.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) if tim=="08:00": begin='dims=100' ser.write(begin.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff'))def aps_test1():#每小时刷新 ''' try: url = 'https://tianqi.moji.com/today/china/shandong/weifang' headers = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36','Referer':'https://tianqi.moji.com/forecast7/china/shandong', 'Host': 'tianqi.moji.com','sec-ch-ua': ' "Not;A"Brand";v="99", "Google Chrome";v="85", "Chromium";v="85" ','sec-fetch-site':'cross-site'} req = request.Request(url,headers=headers) resp = request.urlopen(req) #print(resp.read().decode('utf-8')) s = resp.read().decode('utf-8') ret = re.findall(r'<divsclass="detail_time clearfix">.*?年(.*?) .*?n(.*?)n</div>.*?<div class="detail_wea clearfix">.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)</b>.*?<span>湿度 (.*?)%</span>.*?<em>(.*?) (.*?)级</em>.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)°</b>.*?<p><strong>日出 (.*?)</strong>.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)°</b>.*?<p><strong class="sun_down">日落 (.*?)</strong></p>.*?<b>(.*?)°</b>.*?<strong>(.*?)°</strong>.*?<span class="week">.*?<span class="week">周(.*?)</span>.*?<div cla$ b=['1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22','23'] d = dict(zip(b,ret[0])) real='page0.t1.txt="'+d['4']+'℃'+d['6']+'%"' ser.write(real.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) data='page0.t4.txt="'+d['5']+'"' ser.write(data.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) data1='page0.t5.txt="'+d['7']+'"' ser.write(data1.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) data2='page0.t6.txt="'+d['8']+'级"' ser.write(data2.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) except: real='' ser.write(real.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) ''' data='page0.t0.txt="'+time.strftime('%m月%d日')+'"' ser.write(data.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) if time.strftime('%u')=="0": week='page0.g0.txt="今天是周末耶！"' if time.strftime('%u')=="1": week='page0.g0.txt="今天星期一，美好的一周又开始了！"' if time.strftime('%u')=="2": week='page0.g0.txt="今天星期二，仍然需要努力工作！"' if time.strftime('%u')=="3": week='page0.g0.txt="今天星期三，本周马上过半了！"' if time.strftime('%u')=="4": week='page0.g0.txt="今天星期四，还有两天就周末了！"' if time.strftime('%u')=="5": week='page0.g0.txt="今天星期五，还有一天就休息了！"' if time.strftime('%u')=="6": week='page0.g0.txt="今天星期六，明天就可以休息了！"' ser.write(week.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff'))def aps_test2():#每2秒刷新一次 #打开温度传感器文件 tfile = open("/sys/bus/w1/devices/28-3c01f09664a0/w1_slave") #读取文件所有内容 text = tfile.read() #关闭文件 tfile.close() #用换行符分割字符串成数组，并取第二行 secondline = text.split("n")[1] #用空格分割字符串成数组，并取最后一个，即t=23000 temperaturedata = secondline.split(" ")[9] #取t=后面的数值，并转换为浮点型 temperature = float(temperaturedata[2:]) # 转换单位为摄氏度 temperature = (temperature / 1000) #print(temperature) ti=time.strftime('%H:%M:%S') begin='page0.t2.txt="'+str(temperature)+'"' ser.write(begin.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) begin='p1.pic=1' ser.write(begin.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) time.sleep(1) begin='p1.pic=2' ser.write(begin.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff'))def aps_test3():#每天刷新一次，未使用 url = 'https://tianqi.moji.com/today/china/shandong/weifang' headers = {'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36','Referer':'https://tianqi.moji.com/forecast7/china/shandong', 'Host': 'tianqi.moji.com','sec-ch-ua': ' "Not;A"Brand";v="99", "Google Chrome";v="85", "Chromium";v="85" ','sec-fetch-site':'cross-site'} req = request.Request(url,headers=headers) resp = request.urlopen(req) #print(resp.read().decode('utf-8')) s = resp.read().decode('utf-8') ret = re.findall(r'<divsclass="detail_time clearfix">(.*?) .*?n(.*?)n</div>.*?<div class="detail_wea clearfix">.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)</b>.*?<span>湿度 (.*?)%</span>.*?<em>(.*?)级</em>.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)°</b>.*?<p><strong>日出 (.*?)</strong>.*?<h2>今天(.*?)</h2>.*?<em>(.*?)</em>.*?<b>(.*?)°</b>.*?<p><strong class="sun_down">日落 (.*?)</strong></p>.*?<b>(.*?)°</b>.*?<strong>(.*?)°</strong>.*?<span class="week">.*?<span class="week">周(.*?)</span>.*?<div class="tree clearf$ b=['1','2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20','21','22'] d = dict(zip(b,ret[0])) week='page0.g0.txt="天王盖地虎，今天星期'+d['18']+'"' ser.write(week.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff')) data='page0.t2.txt="'+d['1']+'"' ser.write(data.encode("GB2312")) ser.write(bytes.fromhex('ff ff ff'))scheduler = BlockingScheduler()scheduler.add_job(func=aps_test, trigger='cron', second='*/1')#定时任务，每秒执行scheduler.add_job(func=aps_test1, trigger='cron', minute=0)#定时任务，每小时的第零秒执行scheduler.add_job(func=aps_test2, trigger='cron', second='*/5')#定时任务，每5秒执行#scheduler.add_job(func=aps_test3, trigger='cron', hour=0)#定时任务，每小时的第零秒执行scheduler.start()
