I would like to use a 4 cell LiPo battery (nominal voltage of 14.8v and likely fully charged voltage of 16.8v) on an Arduino robot that uses 15v DC motors and a 15v solenoid. I would like to use a 12v Pololu Basic SPDT relay carrier (item 2483) to activate the solenoid. So, I need to lower the voltage to 12v. I have two questions:
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Are there any issues with using the Pololu 12V Step-up/Step-Down regulator to reduce the voltage from 16.8 to 12v? (The 12v portion of the circuit would power the Arduinos, relay coil and sensors. The 16.8v portion would power the motors.)
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Does the Pololu 12V Step-up/Step/Down regulator isolate the 12v portion of the circuit from the noise on the motor portion? I am using an MinIMU and have found it works better when on a separate circuit (and batteries) from the motors. I’d like to avoid two batteries if possible. (I have tried decoupling capacitors, but they weren’t as effective as two separate batteries.)
Thanks.