What is the most efficient way of using batteries with different voltages with the Arduino Nano

Other Hardware Motors, Mechanics, Power and CNC
1

I am currently working on a rocket project and initially, I was going to use one battery to power the entire system. I was told that I should use two batteries with a boost converter because the Servos can cause voltage spikes and cause the Arduino Nano to reset. I created an updated diagram (Attached) that includes the boost converter and all the ground connected. Is this a practical way of going about this or is there a more efficient way to handle the voltage differential? And does this battery combination make sense?

The Components that I'm using
Arduino Board - Arduino Nano
IMU - MPU 650 - 3-5 V, 3.9 mA
Micro SD CARD - HiLetgo MicroSD card reader - 4.5-5V, 80-200 mA
Servos - SG90 Microservo - 4.8-6V, 250 mAh
LED - RGB Common Cathode LED - 5V, 250 mAh

VAPRES_DIAGRAM_V6
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2

Can you link to the technical data on your 5 volt battery?

3

A single 6v battery source (with sufficient capacity) should work when using a Boost or Boost/Buck converter powering the Arduino.

If you use a Boost converter, set it to 7v output and feed that to Vin.

If you use a Boost/Buck converter set it to 5v and feed the Arduino 5v pin.

4

I was thinking about just taking the case off of this one:USB Battery Pack - 2200 mAh Capacity - 5V 1A Output : ID 1959 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits

5

Would I need a Boost/Buck converter when I connect the grounds from the two batteries?

6

Your thing will likely go to sleep when powering the Arduino, as the document says.

7

You will only need the one battery i.e. 6v, 4AAA or 4AA

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