Hi
I`m trying to control a relay using values from a ORP sensor. The problem is that the value from the sensor changes when the relay is activated. It seems that the Arduino uno not has enough power to drive the relay and sensors.
Any solution?
The ORP and pH sensors are connected to the Arduino uno with adapter 1130 and takes power from the 5v outlet. The relay board is also connected to the 5v outlet. When I´m using the AREF to power the relay board the values are shifting even more.