工作电压	DC 3.3 ~ 5V
电流	50 mA
最大功率	0.25 W
工作温度	-10°C ~ +50°C
控制信号	数字信号
尺寸	32 x 23.8 x 10.8 mm
定位孔大小	直径为 4.8 mm
接口	间距为2.54 mm 3pin防反接口

import utime
from machine import Pin

ird = Pin(4,Pin.IN)

act = {"1": "LLLLLLLLHHHHHHHHLHHLHLLLHLLHLHHH","2": "LLLLLLLLHHHHHHHHHLLHHLLLLHHLLHHH","3": "LLLLLLLLHHHHHHHHHLHHLLLLLHLLHHHH",
"4": "LLLLLLLLHHHHHHHHLLHHLLLLHHLLHHHH","5": "LLLLLLLLHHHHHHHHLLLHHLLLHHHLLHHH","6": "LLLLLLLLHHHHHHHHLHHHHLHLHLLLLHLH",
"7": "LLLLLLLLHHHHHHHHLLLHLLLLHHHLHHHH","8": "LLLLLLLLHHHHHHHHLLHHHLLLHHLLLHHH","9": "LLLLLLLLHHHHHHHHLHLHHLHLHLHLLHLH",
"0": "LLLLLLLLHHHHHHHHLHLLHLHLHLHHLHLH","Up": "LLLLLLLLHHHHHHHHLHHLLLHLHLLHHHLH","Down": "LLLLLLLLHHHHHHHHHLHLHLLLLHLHLHHH",
"Left": "LLLLLLLLHHHHHHHHLLHLLLHLHHLHHHLH","Right": "LLLLLLLLHHHHHHHHHHLLLLHLLLHHHHLH","Ok": "LLLLLLLLHHHHHHHHLLLLLLHLHHHHHHLH",
"*": "LLLLLLLLHHHHHHHHLHLLLLHLHLHHHHLH","#": "LLLLLLLLHHHHHHHHLHLHLLHLHLHLHHLH"}

def read_ircode(ird):
wait = 1
complete = 0
seq0 = []
seq1 = []

while wait == 1:
if ird.value() == 0:
wait = 0
while wait == 0 and complete == 0:
start = utime.ticks_us()
while ird.value() == 0:
ms1 = utime.ticks_us()
diff = utime.ticks_diff(ms1,start)
seq0.append(diff)
while ird.value() == 1 and complete == 0:
ms2 = utime.ticks_us()
diff = utime.ticks_diff(ms2,ms1)
if diff > 10000:
complete = 1
seq1.append(diff)

code = ""
for val in seq1:
if val < 2000:
if val < 700:
code += "L"
else:
code += "H"
# print(code)
command = ""
for k,v in act.items():
if code == v:
command = k
if command == "":
command = code
return command

while True:
command = read_ircode(ird)
print(command)
utime.sleep(0.5)