Camila_99$$
DIIDevHeads IoT Integration Server
•Created by Camila_99$$ on 4/29/2024 in #pcb-and-analog
Can the analog input port of the Arduino Uno support a negative voltage from -5Vdc to 0Vdc?
Morning @Joseph Ogbonna , sorry I didn’t receive your notifications last night . Actually, no, I haven’t tried using a different TIdc yet. But this morning, my friend suggested powering the system with two power supplies shifted by 5V. Connecting the ground of the Arduino to the -5V of the power supply, the +Arduino to the ground of the power supply, and the sensor between the ground and +5V of the power supply. Using a voltage divider /2 with a protective zener diode at the output of the sensor. This way, the -5V of the sensor corresponds to the ground of the Arduino. So what do you think please ???
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