My arduino robot project:
Arduino Nano V3.0 5V ATmega328P
3x battery li-on 18650
unapplied Battery Power Level Indicator 3-30V
DC-DC Boost Converter adjustable 10-32V 12-35V - 10A
DC-DC Converter 5v power supply Arduino and sensor
MOTOR controller L298N Dual H Bridge
unapplied UBEC Input 6-23V Output 6V/3.5A - power supply servos
unapplied 2x servo MG955 6v
2x motor 12v
HC-SR04 Ultrasonic Sensor
laser diode 5mW
unapplied DHT11
unapplied display i2c
unapplied ADXL335 3-axis Analog Output Accelerometer
unapplied 2x COB White Light LED 6W 12V
unapplied Passive Buzzer 3,5 -5,5v
power on button HBS2GQF-11ZE/G/12V/S 16mm
.............................................................................................
Actual state: Testing engines, power and chassis,Here's a video:
https://www.youtube.com/watch?v=jPqtpYRtft0