Things used in this project

Hardware components:
Red laser pointer
×1
TowerPro SG90 servos
×2
AA rechargeable Ni-MH batteries
×6
LM2596 (voltage regulator)
×1
NPN transistor (I used a C547B)
×1
270 Ω resistor
×1
09939 01
Rotary potentiometer (generic)
×1
a tiny breadboard
×1
thin cardboard
×1
copper wire
×1
Breadboard wires
×1
parts from Meccano set
×1
A000066 iso both
Arduino Arduino UNO & Genuino UNO
×1

Code

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