All of the default I2C addresses used on Northern Widget devices, tabulated.
| Device | Default address(es) | Reprogrammable address | Function | Notes |
|---|---|---|---|---|
| Tally | 0x33 | Y | Counts pulses (from sensor, etc.) | |
| Haar | 0x42 | Y | Ruggedized & waterproof temperature, barometric pressure, & relative humidity | |
| Walrus | 0x4D | Y | Submersible temperature and pressure; often for water level | |
| Dyson SW | 0x40, 0x1D | N | Shortwave radiation: radiation (light), accelerometer (given in that order) | Default; upwards-facing |
| Dyson SW | 0x41, 0x53 | N | Shortwave radiation (alternative I2C address set): radiation (light), accelerometer | Alternative addresses set in device firmware |
| Dyson LW | 0x4A | N | Longwave radiation | |
| LiDAR Lite Symbiont | 0x50 | Y | Backpack board for laser rangefinder + MEMS accelerometer for orientation | |
| TP DownHole | 0x77, 0x6A | N | Submersible pressure and temperature (I2C addresses in order); often for water level | 0x77 conflicts with BME280 on Resnik and Margay |
| Device | Default address | Reprogrammable address | Function |
|---|---|---|---|
| DS3231 | 0x68 | N | Real-time clock |
| MCP3421 | 0x6A | N | ADC |
| BME280 | 0x77 | N | On-board barometric pressure, temperature, and relative humidity |
| Device | Default address | Reprogrammable address | Function |
|---|---|---|---|
| DS3231 | 0x68 | N | Real-time clock |
| MCP23018 | 0x20 | N | I/O Expander |
| ADS1115 | 0x48 | N | ADC (on-board devices) |
| ADS1115 | 0x49 | N | ADC (off-board devices) |
| MCP4725 | 0x62 | N | DAC |
| BME280 | 0x77 | N | On-board barometric pressure, temperature, and relative humidity |