Your power supply problems just got SOLVED! This little circuit board may look tiny but inside is a high efficiency DC/DC step-down converter which
DC-DC DC step-down module 24V to 12V 9V 5V 3.3V 3A voltage drop mode UBEC - AliExpress
UBEC 5V 3A 5A 7A External BEC 2-8S Lipo DC-DC Step Down Buck Regulator Module
3A 5V, 3A 12V DC-DC Converter Step Down UBEC Module for RC Quadcopter Plane FPV Holder Camera Servo Power Supply (5v 2Pack) : Toys & Games
10PCS Mini DC-DC 12-18V To 5V 3A Step Down Power Supply Module Voltage Buck Converter Adjustable 97.5% 1.8V 2.5V 3.3V 5V 9V 12V - AliExpress
10PCS Mini DC-DC 12-18V To 5V 3A Step Down Power Supply Module Voltage Buck Converter Adjustable 97.5% 1.8V 2.5V 3.3V 5V 9V 12V - AliExpress
3A 5V, 3A 12V DC-DC Converter Step Down UBEC Module for RC Quadcopter Plane FPV Holder Camera Servo Power Supply (5v 2Pack) : Toys & Games
UBEC DC/DC Step-Down (Buck) Converter - 5V @ 3A output
UBEC DC TO DC CONVERTER 5V@3A INPUT:6-16VDC - 1385 - SAYAL Electronics
UBEC DC/DC Step-Down (Buck) Converter - 5V 3A output
UBEC DC/DC Step-Down (Buck) Converter - 5V @ 3A output
DC-DC DC step-down module 24V to 12V 9V 5V 3.3V 3A voltage drop mode UBEC - AliExpress
UBEC DC/DC Step-Down (Buck) Converter - 12V 3A output