diff --git a/AD8232/README.md b/AD8232/README.md
index e14dd86d8f78e6be89398f86bd047995b9cdf05e..6a09a19143f227e17728971af3990108b4630c40 100644
--- a/AD8232/README.md
+++ b/AD8232/README.md
@@ -4,7 +4,7 @@
 
   读取心电数据, 将其以心电图方式输出在屏幕上, 并计算心率
 
-![waflleandad8232](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/raw/master/AD8232/img/waflleandad8232.jpg)
+![project](https://gitee.com/xinyuan-zhu/waffle-nano-v1-sensor-lib/raw/master/AD8232/img/project.jpg)
 
 ## 物理连接
 
@@ -12,7 +12,7 @@
 
    传感器选择如下图所示的型号为AD8232的心电图监测传感器模块
 
-![ad8232](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/raw/master/raw/master/AD8232/img/ad8232.jpg)
+![ad8232](https://gitee.com/xinyuan-zhu/waffle-nano-v1-sensor-lib/raw/master/AD8232/img/ad8232.jpg)
 
 ### 传感器接线
 
@@ -28,7 +28,7 @@
 
 ## 传感器库使用
 
-  可以获取[ad8232.py](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/raw/master//AD8232/code/ad8232.py),将此库通过[Waffle Maker](https://wafflenano.blackwalnut.tech/ide/index.html#/editor) 的文件上传功能将此库上传到`Waffle Nano`
+  可以获取[ad8232.py](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/blob/master/AD8232/code/ad8232.py),将此库通过[Waffle Maker](https://wafflenano.blackwalnut.tech/ide/index.html#/editor) 的文件上传功能将此库上传到`Waffle Nano`
 
   我们在可以在主函数中使用以下代码导入此库
 
@@ -50,8 +50,8 @@ heartSensorValue = heartSensor.read() #从心电传感器中获取数据
 
 ​		关于此库相关细节说明详见代码注释
 
-## 案例代码复现
+## 测试代码
 
-  可以获取[main.py](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/raw/master/AD8232/code/main.py)函数，将其内容复制到[Waffle Maker](https://wafflenano.blackwalnut.tech/ide/index.html#/editor) 编辑器上传输给`Waffle Nano`，以复现此案例。
+  可以获取[main.py](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/blob/master/AD8232/code/main.py)函数，将其内容复制到[Waffle Maker](https://wafflenano.blackwalnut.tech/ide/index.html#/editor) 编辑器上传输给`Waffle Nano`,   即可使用该传感器。
 
-  案例相关细节说明详见代码注释
\ No newline at end of file
+  相关细节说明详见代码注释
\ No newline at end of file
diff --git a/AD8232/code/ad8232.py b/AD8232/code/ad8232.py
index d8328519a6edb8dd80c39d3829c6900802fa9000..829168da8280334461599e0bcf264e289e52e457 100644
--- a/AD8232/code/ad8232.py
+++ b/AD8232/code/ad8232.py
@@ -11,6 +11,6 @@ class AD8232:
         elif LO == 2:
             return self.LO2Pin.value()
     def read(self):
-        data = self.adc.read() #读取心电数据
+        data = self.adc.read() #读取心电s数据
         return data
     
\ No newline at end of file
diff --git a/AD8232/code/main.py b/AD8232/code/main.py
index 7f6f273af32180e9270e7c4df56b8c86aa35fcc1..144096d6274b8aadb56f6f354a4dc593436a4894 100644
--- a/AD8232/code/main.py
+++ b/AD8232/code/main.py
@@ -1,75 +1,12 @@
-from ad8232 import AD8232 #导入AD8232库
-from machine import Pin, SPI #导入通信以及引脚相关的库
-import st7789 #导入屏幕驱动库
+from ad8232 import AD8232
 import utime
 
-heartRate = 0
-heartRateStr = "0"
-heartSensorValue = 0
-height_old = 0
-height_new = 0
-STHEIGHT = 240
-STWIDTH = 240
-x = 1
-y = 1
-cnt = 0
+heartSensor = AD8232(analogPin = 5, LO1Pin=2, LO2Pin=14)  #构造ad8232对象
 
-heartSensor = AD8232(analogPin = 5, LO1Pin=2, LO2Pin=14) #构造心电传感器对象
-
-spi = SPI(0, baudrate=40000000, polarity=1, phase=0, bits=8, endia=0, sck=Pin(6), mosi=Pin(8)) #构造spi对象
-display = st7789.ST7789(spi, 240, 240, reset=Pin(11,func=Pin.GPIO, dir=Pin.OUT), dc=Pin(7,func=Pin.GPIO, dir=Pin.OUT)) #构造屏幕控制对象
-display.init() #屏幕初始化
-
-backgroud_clr = st7789.color565(255, 255, 255) #设置背景颜色为白色
-line_clr = st7789.color565(0, 0, 0) #心电图显示用颜色
-str_clr = st7789.color565(0,0,255) #心率显示用颜色
-grid_clr = st7789.color565(242, 167, 167)
-
-def draw_grid():
-    grid_x = 0
-    for i in range(12):
-        display.line(grid_x, 0, grid_x, 239, grid_clr)
-        display.line(0, grid_x, 239, grid_x, grid_clr)
-        grid_x += 20
-
-if __name__ == "__main__":
-    display.fill(backgroud_clr)
-    draw_grid()
-    while True:
-        if  heartSensor.value(LO = 1) == 1 or heartSensor.value(LO = 2) == 1: #判断电极片是否脱落
-            print("!")
-            heartSensorValue = 1100
-            line_clr = st7789.color565(255, 0, 0) #电极片脱落后曲线颜色变为红色，心率数字颜色变为红色作为脱落提示
-            str_clr = st7789.color565(255, 0, 0)
-        else:
-            heartSensorValue = heartSensor.read()   #读取心电传感器数据
-            line_clr = st7789.color565(0, 0, 0)
-            str_clr = st7789.color565(0,0,255)
-        
-        # 将心电数据转化为坐标，两点连线输出到屏幕
-        y = int(heartSensorValue / 1200 * 240) - 100   
-        height_new = 240 - y
-        display.line(x-1, height_old, x, height_new, line_clr)
-
-        if height_old - height_new >= 12: #寻找心电图R波(变化极快的波形)，并计算心率
-            if cnt > 40:
-                heartRate = 60 / (cnt * 0.01)
-                cnt = 0
-                if(heartRate<100):
-                    heartRateStr = "0" + str(int(heartRate))
-                else:
-                    heartRateStr = str(int(heartRate))
-                display.draw_string(170, 12, heartRateStr,size=4,color = str_clr) 
-                print(heartRate)
-
-        if x >= 240:
-            x = 1
-            display.fill(st7789.color565(255, 255, 255))
-            draw_grid()
-            display.draw_string(170, 12, heartRateStr,size=4,color = str_clr)
-        else:
-            x += 1
-
-        height_old = height_new
-        cnt += 1
-        utime.sleep(0.01)
+while True:   
+    if heartSensor.value(LO = 1) == 1 or heartSensor.value(LO = 2) == 1: #导联脱落检测
+        print("!")    
+    else:
+        heartSensorData = heartSensor.read()  #读取ADC值
+        print(heartSensorData)
+        utime.sleep(0.1)
\ No newline at end of file
diff --git a/AD8232/img/project.jpg b/AD8232/img/project.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..60220cfb900b1ba09b656f90f9e2c7b702216d5d
Binary files /dev/null and b/AD8232/img/project.jpg differ
diff --git a/AD8232/img/waflleandad8232.jpg b/AD8232/img/waflleandad8232.jpg
deleted file mode 100644
index 8c3ddf19318503560adad96faffa05a1af17d6d4..0000000000000000000000000000000000000000
Binary files a/AD8232/img/waflleandad8232.jpg and /dev/null differ
diff --git a/paj7620_D/README.md b/paj7620_D/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..b9db914f8536f083255118fcfd97e62a9002ae13
--- /dev/null
+++ b/paj7620_D/README.md
@@ -0,0 +1,88 @@
+### PAJ7620U2手势传感器
+
+## 物理连接
+
+### 传感器选择
+
+传感器选择如下图所示的型号为PAJ7620U2的手势识别传感器模组
+
+![7620](https://gitee.com/xinyuan-zhu/waffle-nano-v1-sensor-lib/raw/master/paj7620_D/img/7620.jpg)
+
+### 传感器接线
+
+传感器与waffle Nano之间的接线方式如下表所示，且未在下表中显示的引脚均处于悬空不连状态。
+
+| Waffle Nano | 传感器 |
+| ----------- | ------ |
+| 3.3         | VIN    |
+| IO1         | SCL    |
+| IO0         | SDA    |
+| GND         | GND    |
+
+## 传感器库使用
+
+可以获取[paj7620u2.py](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/raw/master/paj7620_D/code/paj7620.py),将此库通过[Waffle Maker](https://wafflenano.blackwalnut.tech/ide/index.html#/editor) 的文件上传功能将此库上传到`Waffle Nano`上。
+
+我们在可以在主函数中使用以下代码导入此库。
+
+```
+from paj7620 import PAJ7620
+```
+
+在对象构造函数中，我们需要传入一个已经构造好的`IIC`对象
+
+```python
+from machine import I2C  
+
+i2c = I2C(1, sda=Pin(0), scl=Pin(1), freq=400000)  
+
+sensor7620=PAJ7620(i2c)
+```
+
+###  函数
+
+​		下面列举传感器库中所使用的函数
+
+####  寄存器初始化
+
+```
+__init__(self, i2c, addr)
+```
+
+​		函数说明：将寄存器初始化，传入i2c和需要通信的从机地址
+
+#### 设置手势识别
+
+```
+set_gesture(self, reg, data)
+```
+
+​		函数说明：设置开启哪些手势可识别,  reg为手势识别寄存器序号,data为需要发送的数据(十六进制数), 范围[0,2^8 - 1]
+
+####  获取手势数据
+
+```
+get_gesture(self,reg)
+```
+
+​		函数说明：返回寄存器值，不同值对应不同手势，reg为手势识别寄存器序号
+
+返回值：
+
+    reg==1:
+        向上->[1]
+        向下->[2]
+        向左->[4]
+        向右->[8]
+        向前->[16]
+        向后->[32]
+        顺时针->[64]
+        逆时针->[128]
+    reg==2:
+        挥动->[1]
+## 案例代码复现
+
+  可以获取[main.py](https://gitee.com/blackwalnutlabs/waffle-nano-v1-sensor-lib/raw/master/paj7620_D/code/main.py)代码，将其内容复制到[Waffle Maker](https://wafflenano.blackwalnut.tech/ide/index.html#/editor) 编辑器上传输给`Waffle Nano`，以复现此案例，基础效果如下所示：
+
+案例相关细节说明详见代码注释
+
diff --git a/paj7620_D/code/main.py b/paj7620_D/code/main.py
new file mode 100644
index 0000000000000000000000000000000000000000..0179e84df254e4141a95e2e28536c7a39a2b1955
--- /dev/null
+++ b/paj7620_D/code/main.py
@@ -0,0 +1,13 @@
+from machine import Pin, I2C
+from paj7620 import PAJ7620
+import utime
+
+i2c = I2C(1, scl=Pin(1), sda=Pin(0), freq=400000)
+print(i2c.scan())  #115
+sensor7620 = PAJ7620(i2c,addr = 115)
+
+sensor7620.set_gesture(1,0x0C)
+
+while True:
+    print(sensor7620.get_gesture(1))
+    utime.sleep(1)
\ No newline at end of file
diff --git a/paj7620_D/code/paj7620.py b/paj7620_D/code/paj7620.py
new file mode 100644
index 0000000000000000000000000000000000000000..8554cbfe54382fee806e4e20fb0d7a0754d7de3a
--- /dev/null
+++ b/paj7620_D/code/paj7620.py
@@ -0,0 +1,36 @@
+from machine import I2C
+import utime
+
+class PAJ7620():
+    def __init__(self, i2c, addr):
+        self.i2c = i2c
+        self.addr = addr #设置需要通信的从机地址
+        self.i2c.write(addr, b'\xEF') #唤醒命令
+        utime.sleep(0.01)
+        initial_value = self.i2c.readfrom_mem(addr, 0x00, 1)
+        if initial_value == [32]:
+            print("wake-up successful!")
+            i2c.write(addr, b'\xEF\x01')  #进入BANK1
+            i2c.write(addr, b'\x72\x01')  #使能工作
+        else:
+            print("wake-up failed!")
+
+    def set_gesture(self, reg, data):
+        self.i2c.write(self.addr, b'\xEF\x00')  #进入BANK0
+
+        if reg == 1:
+            self.i2c.write(self.addr, bytes([0x41,data]))
+        elif reg == 2:
+            self.i2c.write(self.addr, bytes([0x42,data]))
+
+        print(self.i2c.readfrom_mem(self.addr, 0x41, 1))   #获取当前哪些手势可以被识别
+        print(self.i2c.readfrom_mem(self.addr, 0x42, 1)) 
+
+    def get_gesture(self,reg):
+        self.i2c.write(self.addr, b'\xEF\x00')  #进入BANK0
+        if reg == 1:
+            ges1 = self.i2c.readfrom_mem(self.addr, 0x43, 1)
+            return ges1
+        if reg == 2:
+            ges2 = self.i2c.readfrom_mem(self.addr, 0x44, 1)
+            return ges2
\ No newline at end of file
diff --git a/paj7620_D/img/7620.jpg b/paj7620_D/img/7620.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..139e6c96a5bb5bca28d0bf51b43e79312c728a7d
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