️ Technical Specifications
| Pin | Symbol | Type | Description |
|---|---|---|---|
| 1 | GND | Power | Ground reference (connect to MCU GND) |
| 2 | VCC | Power | +3.3 V to +5 V supply voltage |
| 3 | D0 | Analog | voltage ∝ ambient light; connect to an ADC input of your MCU |
Note: Do not exceed 5 V on VCC. SIO swings between 0 V (dark) and VCC (bright).