SHD23SHD22SHD21SHD20HPD19+5V18GND17I2C_DATA16I2C-CLK15HEC14CEC13CK-12CK_SHIELD11CK+10D0-9D0_SHIELD8D0+7D1-6D1_SHIELD5D1+4D2-3D2_SHIELD2D2+1