How to power Arduino with L293D Motor Shield?

Question

Arduino

Greetings! There is an Arduino Uno board and L293D Motor Shield. Two HC-SR04 sensors (5V each), two servos (6V each), two low-current motors (6V each) and a HC-05 bluetooth module (3.3V) are connected to them. Please help me to tell about the connection of power to this design. I tried the option of connecting several AA batteries through the DC-DC converter, but the converter almost boiled. When the crown battery was connected through the converter, after a while (< 1 min), the voltage began to drop rapidly, the same story when the battery was connected to 7V. In general, the final problem is always insufficient voltage, which primarily affects Bluetooth, it turns off.

Answer 1

you can power the arduino itself from the crown, and put the shields with the motors on the batteries

Answer 2

You connect the Bluetooth to the Arduino dc-dc 3.3V, it must withstand its current, the arduino itself and the sensors through the built-in dc-dc arduino 5.0v, connect the arduino and HV power 293 directly from 4 AA, C or D batteries, you can 18650, I don’t know what current your motors have, you can also use a 7 volt battery from the battery. The motors will be the most prolific - they do not need to be hung on DC-DC, but powered with normal current, and in this way protect the logic from pollution by starting currents.
The crown inside consists of six AAAA batteries, so the current it gives is generally scanty.