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【智控万物】我为冬奥会加油——倒计时沙漏灯

【项目背景】

2019年5月10日晚，北京冬奥会倒计时1000天活动在奥林匹克公园玲珑塔南侧广场举行。活动中，北京2022年冬奥会倒计时装置正式启动。

2021年2月4日，位于北京奥林匹克公园核心区中心位置的玲珑塔，北京冬奥会倒计时钟显示365天。玲珑塔南起500余米的国家体育场鸟巢，在2008年见证过国人的奥运梦想与荣光后，一年之后的夜晚，将迎来一场世界奥林匹克冰雪盛宴的开幕。

北京冬季奥运会设7个大项，15个分项，109个小项。北京将主办冰上项目，张家口将主办雪上项目，延庆协办张家口举办雪上项目。

我在河北张家口，我为冬奥会加油。
【项目设计】

使用LED灯带和掌控板，制作一个仿玲珑塔北京冬奥会倒计时钟。
【项目材料】

炫彩 WS2812 LED灯带 3米（2条）https://www.dfrobot.com.cn/goods-852.html

掌控板2.0（掌控宝）https://www.dfrobot.com.cn/goods-852.html
【项目制作】

【Mind+编程】
一、编号

因使用完整灯带，没有剪开，所以所有的灯都要重新对应编号。在编程时，也要使用列表将原灯号及新编号进行记录。才能对应控制每个灯的亮灭，完成显示效果。

二、程序初始化

1、每个灯带120个灯，共240个。数据线接掌控宝13口上。灯带单独供电，与掌控板要共地。
2、连接Wifi，获取时间。
3、倒计时的天数等时间，因图型中没有找到时间差处理方法，所以这几个值，后面用代码模式处理。
4、“灯列表”中，放的是灯的实际编号。因弯曲部分有灯，所显示出来的灯号并不都连续。（见制作图）

[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,19,20,21,22,23,24,25,26,27,28,29,30,31,36,37,38,39,40,41,42,43,44,45,46,53,54,55,56,57,58,59,60,61,70,71,72,73,74,87,88,89,102,103,104,115,128,129,130,144,145,146,160,161,162,163,164,174,175,176,177,178,179,180,181,182,191,192,193,194,195,196,197,198,199,200,201,206,207,208,209,210,211,212,213,214215,216,217,218,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239]
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5、灯落下，为了形成沙堆的效果，需要对“灯堆”进行分层记录灯号。

[239,206,201,174,130,225,218,191,182,128,115],[238,207,200,175,164,144,226,217,192,181,160,146,129],[237,208,199,176,163,227,216,193,180,161,145],[236,209,198,177,228,215,194,179,162],[235,210,197,229,214,195,178], [234,211,230,213,196], [233,231,212]
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并进行记录新编号（落灯堆序号）。

[118,91,90,71,62,104,103,80,79,60,59],[117,92,89,72,70,63,105,102,81,78,66,65,61],[116,93,88,73,69,106,101,82,77,67,64],[115,94,87,74,107,100,83,76,68],[114,95,86,108,99,84,75], [113,96,109,98,85], [112,110,97]
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6、对中线灯进行记录编号（中线灯上下列表）

[115,103,88,72,57,41,25,8]
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[115,129,145,162,178,196,212,232]
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三、主程序

四、代码处理日期差，计算倒计时

firstDay = (time.localtime()[0], time.localtime()[1], time.localtime()[2],time.localtime()[3],time.localtime()[4],time.localtime()[5],time.localtime()[6],time.localtime()[7],-1)
endDay=(2022,2,4,20,0,0,1,35,-1)
Time1=(time.mktime(endDay)-time.mktime(firstDay))
Tian=(int(Time1/(24*3600)))
Time2=Time1-Tian*24*3600
Shi = int((Time2)/3600)
Time3=Time2 - Shi*3600
FenZhong = int((Time3)/60)

#Miao = int(Time3-FenZhong*60)
Miao =59
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五、MicroPython完成代码


# MindPlus
# mpython
import font.digiface_44
import font.digiface_21
from mpython import *
import neopixel
import framebuf
import network
import ntptime
import time
import math

def neopixel_range(rgb, start, end, color):
  trend = -1 if end < start else 1
  for i in range(start, end-1 if trend < 0 else end+1, trend):
    rgb[i] = (color)
  rgb.write()

def display_font(_font, _str, _x, _y, _wrap, _z=0):
  _start = _x
  for _c in _str:
    _d = _font.get_ch(_c)
    if _wrap and _x > 128 - _d[2]: _x = _start; _y += _d[1]
    if _c == '1' and _z > 0: oled.fill_rect(_x, _y, _d[2], _d[1], 0)
    oled.blit(framebuf.FrameBuffer(bytearray(_d[0]), _d[2], _d[1],
    framebuf.MONO_HLSB), (_x+int(_d[2]/_z)) if _c=='1' and _z>0 else _x, _y)
    _x += _d[2]


my_wifi = wifi()
ws2812_P13 = neopixel.NeoPixel(Pin(Pin.P13), n=240, bpp=3, timing=1)
ws2812_P13.fill((0, 0, 0))
ws2812_P13.write()
my_wifi.connectWiFi("sxs","smj080823")
while not (my_wifi.sta.isconnected()):
  pass
ntptime.settime(8, "ntp.ntsc.ac.cn")

firstDay = (time.localtime()[0], time.localtime()[1], time.localtime()[2],time.localtime()[3],time.localtime()[4],time.localtime()[5],time.localtime()[6],time.localtime()[7],-1)
endDay=(2022,2,4,20,0,0,1,35,-1)
Time1=(time.mktime(endDay)-time.mktime(firstDay))
Tian=(int(Time1/(24*3600)))
Time2=Time1-Tian*24*3600
Shi = int((Time2)/3600)
Time3=Time2 - Shi*3600
FenZhong = int((Time3)/60)

#Miao = int(Time3-FenZhong*60)
Miao =59
DengLieBiao = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,19,20,21,22,23,24,25,26,27,28,29,30,31,36,37,38,39,40,41,42,43,44,45,46,53,54,55,56,57,58,59,60,61,70,71,72,73,74,87,88,89,102,103,104,115,128,129,130,144,145,146,160,161,162,163,164,174,175,176,177,178,179,180,181,182,191,192,193,194,195,196,197,198,199,200,201,206,207,208,209,210,211,212,213,214215,216,217,218,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239]
LuoDengDui = [[239,206,201,174,130,225,218,191,182,128,115],[238,207,200,175,164,144,226,217,192,181,160,146,129],[237,208,199,176,163,227,216,193,180,161,145],[236,209,198,177,228,215,194,179,162],[235,210,197,229,214,195,178], [234,211,230,213,196], [233,231,212]]
LuoDengDuiXuHao = [[118,91,90,71,62,104,103,80,79,60,59],[117,92,89,72,70,63,105,102,81,78,66,65,61],[116,93,88,73,69,106,101,82,77,67,64],[115,94,87,74,107,100,83,76,68],[114,95,86,108,99,84,75], [113,96,109,98,85], [112,110,97]]
ZhongXianDengShangLieBiao = [115,103,88,72,57,41,25,8]
ZhongXianDengXiaLieBiao = [115,129,145,162,178,196,212,232]
while True:
  ws2812_P13.fill((0, 0, 0))
  ws2812_P13.write()
  LiangMieLieBiao = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
  i = 0
  FangXiang = 0
  for index in range(60):
    neopixel_range(ws2812_P13, (DengLieBiao[i]), (DengLieBiao[i]), (0, 0, 255))
    i = (i + 1)
  i = 0
  if (FangXiang == 0):
    LuoDengLieBiao = ZhongXianDengXiaLieBiao
    LuoDengXuHao = [59,61,64,68,75,85,97,111]
  else:
    LuoDengLieBiao = ZhongXianDengShangLieBiao
    LuoDengXuHao = [59,57,54,50,43,33,21,7]
  for index in range(60):
    YunXingShiJian = time.ticks_ms()
    YunXingShiJian = time.ticks_ms()
    j = 0
    ZhongXianMieDengGeShu = 0
    for index in range(len(LuoDengXuHao)):
      if ((LiangMieLieBiao[(LuoDengXuHao[j])]) == 0):
        ZhongXianMieDengGeShu = (ZhongXianMieDengGeShu + 1)
      j = (j + 1)
    if (ZhongXianMieDengGeShu > 0):
      LuoDengJianGeShiJian = (0.5 / ZhongXianMieDengGeShu)
    else:
      LuoDengJianGeShiJian = 0.5
    time.sleep(LuoDengJianGeShiJian)
    neopixel_range(ws2812_P13, (DengLieBiao[i]), (DengLieBiao[i]), (0, 0, 0))
    j = 0
    while not (((j == len(LuoDengLieBiao)) or ((LiangMieLieBiao[(LuoDengXuHao[j])]) == 1))):
      neopixel_range(ws2812_P13, (LuoDengLieBiao[j]), (LuoDengLieBiao[j]), (255, 0, 0))
      time.sleep(LuoDengJianGeShiJian)
      neopixel_range(ws2812_P13, (LuoDengLieBiao[j]), (LuoDengLieBiao[j]), (0, 0, 0))
      j = (j + 1)
    if (j == 8):
      LiangMieLieBiao[(LuoDengXuHao[7])]=1
      neopixel_range(ws2812_P13, 232, 232, (255, 0, 0))
    else:
      LuoDengDuiXing = (LuoDengDui[(j - 1)])
      LuoDengDuiXingDengGeShu = len(LuoDengDuiXing)
      LuoDengDuiXuHaoXing = (LuoDengDuiXuHao[(j - 1)])
      LuoDengDuiXuHaoXingDengGeShu = len(LuoDengDuiXuHaoXing)
      k = (LuoDengDuiXingDengGeShu - 1)
      for index in range(LuoDengDuiXingDengGeShu):
        if ((LiangMieLieBiao[(LuoDengDuiXuHaoXing[k])]) == 0):
          if (k == 0):
            neopixel_range(ws2812_P13, (LuoDengDuiXing[k]), (LuoDengDuiXing[k]), (255, 0, 0))
            LiangMieLieBiao[(LuoDengDuiXuHaoXing[k])]=1
            break
          if ((k > ((math.floor((LuoDengDuiXingDengGeShu / 2))) - 1)) and ((LiangMieLieBiao[(LuoDengDuiXuHaoXing[((math.floor((LuoDengDuiXingDengGeShu / 2))) - 1)])]) == 0)):
            pass
          else:
            neopixel_range(ws2812_P13, (LuoDengDuiXing[k]), (LuoDengDuiXing[k]), (255, 0, 0))
            time.sleep(0.01)
            neopixel_range(ws2812_P13, (LuoDengDuiXing[k]), (LuoDengDuiXing[k]), (0, 0, 0))
        else:
          neopixel_range(ws2812_P13, (LuoDengDuiXing[(k + 1)]), (LuoDengDuiXing[(k + 1)]), (255, 0, 0))
          LiangMieLieBiao[(LuoDengDuiXuHaoXing[(k + 1)])]=1
          break
        k = (k - 1)
    i = (i + 1)
    oled.fill(0)
    display_font(font.digiface_44, (str(Tian)), 0, 0, True, 2)
    display_font(font.digiface_21, (str(Shi)), 0, 45, True, 2)
    display_font(font.digiface_21, (str(FenZhong)), 55, 45, True, 2)
    display_font(font.digiface_21, (str(Miao)), 103, 45, True, 2)
    oled.show()
    if (Miao == 0):
      if (FenZhong == 0):
        if (Shi == 0):
          if (Tian == 0):
            oled.DispChar("今天开幕", 42, 22, 1)
            oled.show()
            break
          else:
            Tian = (Tian - 1)
          Shi = 23
        else:
          Shi = (Shi - 1)
        FenZhong = 59
      else:
        FenZhong = (FenZhong - 1)
      Miao = 59
    else:
      Miao = (Miao - 1)
    while not (((time.ticks_ms() - YunXingShiJian) > 1000)):
      pass

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