UPDATE readme.md

README.md

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 # sensors-control-gpio
 This is a repository desgined for the arduino 37 sensors bundle for raspberry pi 4. This package implemented in raspberry pi 4B GPIO with RPi.GPIO.
+# Get started
+```bash
+pip install sensors-control-gpio-xzf8971
+```
+# AHT20
+AHT20 CRC8/MAXIM is still work in proress.
+## How to
+For help infromation
+```bash
+python -m AHT20_sensor_control --help
+```
+```bash
+# Open I2C bus1. Save data into example.log. Measure data every 60s. 
+python -m AHT20_sensor_control -n 1 -o example.log -t 60 
+# Enable CRC8 check. Only save data when crc check is OK
+python -m AHT20_sensor_control -n 1 -o example.log -t 60 -c
+```
+# DHT11
+## How to
+```bash
+python -m DHT11_sensor_control -p pin -b adafruit 
+```