Ligne 3 : |
Ligne 3 : |
| {{traduction}} | | {{traduction}} |
| | | |
| + | == Introduction == |
| + | UniPi features two analog 0-10V input channels (via the MCP3422, address 0x68) marked as AI1 and AI2. Each channel has its own + and |
| + | – (e.g. AI1+ and AI1-). The + connector expects positive voltage from the connected device and – expects the negative pole (the GND). |
| + | |
| + | The guaranteed accuracy is 5% however 1% is commonly reachable. |
| + | |
| + | To correctly calculate the input voltage, a coefficient of the resistor divider has to be taken into account. The coefficient of each channel is saved in EEPROM as single precision binary floating point format binary32 (IEEE 754). |
| + | |
| + | Before version 1.1 the coefficient is not saved in the EEPROM and thus must be calculated during conversion in software (Typically the value is around 5.56). |
| + | |
| + | == x == |
| {{UniPi-TRAILER}} | | {{UniPi-TRAILER}} |