My project reads an external 5v sensor but is limited by arduino's power diode that drops the voltage to 4.3 Volts. This means that i can only read up to 4.x volts of sensor.
So i'm thinking to use a voltage divider that will transform 5V to 4.123v, which is below the 4.3V max that the system can read, then use math to map the voltage to the correct reading
Sensor input------- 1K ohm --|--------------- Analog Pin | | 4k7 | | GND
Other than resolution is there any downside to this?