User Manual

8/20/2015 SeeedRecipeIntelligentalarmsystemmadewithBBG(IoT)
http://www.seeedstudio.com/recipe/315intelligentalarmsystemmadewithbbgiot.html 3/10
Let’s make a Grove cable with two branches as shown in the picture. So we can use the UART interface as two GPIOs.
Attach the BBG I2C interface to the I2C Hub by Grove cable. Then attach the OLED and BMP180 to the I2C Hub.
Attach the Grove-Button and Grove-Led to the BBG UART interface by the Grove cable with two branches. Make sure that the UART2_Txd pin
is connected to the Grove-LED, and UART2_RXD is connected to the Grove-Button. Just as shown in the figure below.