The following table lists the I²C addresses used across the BigClown system.

All addresses are provided in a 7-bit format.

Address Chip BigClown product Remark
0x00 (reserved) I²C reserved
0x01 (reserved) I²C reserved
0x02 (reserved) I²C reserved
0x03 (reserved) I²C reserved
0x04 (reserved) I²C reserved
0x05 (reserved) I²C reserved
0x06 (reserved) I²C reserved
0x07 (reserved) I²C reserved
0x08 NT3H2011 NFC Tag Changed from default to avoid collision
0x19 LIS2DH12 Core Module Channel I2C0
0x38 TCA9534A CO2 Module
0x39 TCA9534A LCD Module
0x3B TCA9534A Relay Module Default address
0x3F TCA9534A Relay Module Alternate address
0x40 HDC2080 Humidity Tag (R2.x+) Default address
0x41 HDC2080 Humidity Tag (R2.x+) Alternate address
0x44 OPT3001 Lux Meter Tag Default address
0x45 OPT3001 Lux Meter Tag Alternate address
0x48 TMP112 Temperature Tag Default address
0x49 TMP112 Temperature Tag Alternate address
0x49 TMP112 Core Module Channel I2C0
0x50 (reserved) Bridge Module FT260 EEPROM search
0x51 (reserved) Bridge Module FT260 EEPROM search
0x52 (reserved) Bridge Module FT260 EEPROM search
0x53 (reserved) Bridge Module FT260 EEPROM search
0x54 (reserved) Bridge Module FT260 EEPROM search
0x55 (reserved) Bridge Module FT260 EEPROM search
0x56 (reserved) Bridge Module FT260 EEPROM search
0x57 (reserved) Bridge Module FT260 EEPROM search
0x5F HTS221 Humidity Tag (R1.x)
0x60 MPL3115A2 Barometer Tag
0x64 ATSHA204A Core Module Channel I2C0
0x70 FT260 Bridge Module
0x78 (reserved) I²C reserved
0x79 (reserved) I²C reserved
0x7A (reserved) I²C reserved
0x7B (reserved) I²C reserved
0x7C (reserved) I²C reserved
0x7D (reserved) I²C reserved
0x7E (reserved) I²C reserved
0x7F (reserved) I²C reserved