I'm making a flying project which involves an Arduino and 4 servos. It has to fly, so the less it weighs, the better. I have been warned that I should not power my main board and the motors from the same power supply. But, again, I need to save weight and two batteries is a lot. I don't require the system to work for more than 5 minutes on a single charge. So my question is:
Can I use a single LiPo battery (7.4 V, 220mAh, 30C (6.6A) ), to power my Arduino micro and 4 little servos (maximum drain 800 mA) without destabilising the current much? The motors are powered through a step-up step-down converter, reducing the voltage to 5V.
Add capacity to the 5V line of the Arduino like 470uF or so. To be sure the power to the Arduino does not drop (to much) when the servo's work.
If it still resets you could power the Arduino Vin via a diode and add a cap after the diode. Because of the diode the servo's can't drain that cap that way.
Sometimes you talk about servos and sometimes you say motors. Are they the same thing or are there both servos AND some motors that you haven't told us anything about? Because you don't seem to have anything that will power a flying thing...unless of course it is a glider.
I understand your concerns. I am not making a weapon. My goal is not to hit a target with this rocket, but to fly it up into the air and then land it in a controllable and safe manner inspired by the one presented by Blue Origin with the New Glenn.
The model doesn’t have any warhead or explosives built in
I am not going to use a big rocket motors and they’re very hard to come by in Europe. It will fly on four C6-5 hobby motors. The rocket itself is too heavy to fly above 300 meters on the ones I can get.
I fly my models legally, respecting our local law (in my case Polish).
