Hi, I want to create a prop for a Halloween costume that relies on a small, battery-operated servo that rotates in one direction, pauses, rotates back, and repeats this loop indefinitely. Ideally, I want it to be powered by a small but powerful battery to last multiple hours, and to aid in power consumption I want to be able to turn it on and off when not in use with a simple button/switch. (I don’t know the exact strength of servo I need, so I am going to buy the Sub-Micro Servo 3.7g, Power HD HD-1440A, and HD-1600A to test out. I plan to control it with a Micro Maestro 6-Channel Controller.)
I noticed that Pololu only sells NiMH batteries. I was thinking of using a 4.8V, 2200mAH battery. However, I noticed another site has a 3.7V, 2500mAH Lipo battery that is much thinner and lighter (I also already have a Lipo charger so would not have to purchase a new one just to recharge the NiMH for this project). But the Maestro controller needs 5V as a minimum. Could I use the 3.7V Lipo in tandem with a 5V Step-Up Voltage regulator? Would a 3.7 V battery even be sufficient, and would the torque of the servos be reduced significantly? And if I get the partial Maestro without the pins to conserve space, is it correct that I would need to solder and resolder the battery every single time I need to recharge it?
Would a Rocker Switch work for on/off functionality, and would I wire it between the battery and the controller? I noticed Pololu sells “Power Switches”, but I don’t quite understand their specific use, and I want a small switch that is not on a PCB. I also saw the Mini Pushbutton Switch, but I assume this cannot be a “global” on/off and would only work (if I program it via the controller) to command the servo to begin/end its movement, meaning the controller would be drawing power constantly, even when the servo is not in use (would the power-draw be significant, or negligible?)
Thank you in advance for your help.