diff --git a/boards/default_src/micropython/origin/build/lib/gnss.py b/boards/default_src/micropython/origin/build/lib/gnss.py
index dd4786c3..a9395dc3 100644
--- a/boards/default_src/micropython/origin/build/lib/gnss.py
+++ b/boards/default_src/micropython/origin/build/lib/gnss.py
@@ -14,7 +14,7 @@ class NMEA0183:
 		self._uart.init(baudrate=baudrate, timeout=timeout, rxbuf=1024)
 		self.time=[None, None, None, None, None, None]
 		self.locate=['', None, '', None, None, None, None]	#0'1经度,2'3纬度,4海拔m,5速度m/s,6航向°
-		self.status=[False, ' ', 0]							#有效标注,定位模式,卫星量
+		self.status=[False, ' ', 0]	#有效标注,定位模式,卫星量
 		if not self._chip_id():
 			raise AttributeError("Cannot find a GNSS device")
 
@@ -29,11 +29,11 @@ class NMEA0183:
 		for _ in range(10):
 			sleep_ms(300)
 			if self.any():
-				self._uart.write(("$PCAS02,1000*2E\r\n").encode())						#更新频率1HZ
+				self._uart.write(("$PCAS02,1000*2E\r\n").encode())	#更新频率1HZ
 				self._uart.write("$PCAS03,1,0,0,0,1,0,0,0,0,0,,,0,0*02\r\n".encode())	#只加载GNGGA和GNRMC
 				return True
 
-	def	_judge(self, buffer, dlen):
+	def _judge(self, buffer, dlen):
 		try:
 			data=buffer.strip().decode().split(',')
 			if len(data) == dlen:
diff --git a/boards/default_src/micropython/origin/build/lib/sht20.py b/boards/default_src/micropython/origin/build/lib/sht20.py
new file mode 100644
index 00000000..28a4ab89
--- /dev/null
+++ b/boards/default_src/micropython/origin/build/lib/sht20.py
@@ -0,0 +1,31 @@
+from struct import unpack as unp
+from time import sleep_ms
+
+# SHT20 default address
+SHT20_I2CADDR = 64
+TRI_T_MEASURE_NO_HOLD = b'\xf3'
+TRI_RH_MEASURE_NO_HOLD = b'\xf5'
+READ_USER_REG = b'\xe7'
+WRITE_USER_REG = b'\xe6'
+SOFT_RESET = b'\xfe'
+
+class SHT20(object):
+    def __init__(self, i2c_bus):
+        self._address = SHT20_I2CADDR
+        self._bus = i2c_bus
+
+    def get_SHT_temperature(self):
+        self._bus.writeto(self._address, TRI_T_MEASURE_NO_HOLD)
+        sleep_ms(150)
+        origin_data = self._bus.readfrom(self._address, 2)
+        origin_value = unp('>h', origin_data)[0]
+        value = -46.85 + 175.72 * (origin_value / 65536)
+        return value
+
+    def get_SHT_relative_humidity(self):
+        self._bus.writeto(self._address, TRI_RH_MEASURE_NO_HOLD)
+        sleep_ms(150)
+        origin_data = self._bus.readfrom(self._address, 2)
+        origin_value = unp('>H', origin_data)[0]
+        value = -6 + 125 * (origin_value / 65536)
+        return value
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