Quantity   Component name
1 × 9g Servo motor link: https://www.banggood.com/TowerPro-SG90-Mini-Gear-Micro-Servo-9g-For-RC-Airplane-Helicopter-p-1009914.html?p=E01411629100201406T1&custlinkid=359550
1 × 1602 blue LCD-screen link: https://www.banggood.com/Geekcreit-IIC-I2C-1602-Blue-Backlight-LCD-Display-Screen-Module-For-Arduino-p-950726.html?p=E01411629100201406T1&custlinkid=669170
1 × Arduino uno link: https://www.banggood.com/Wholesale-Arduino-Compatible-R3-UNO-ATmega16U2-AVR-USB-Board-p-68537.html?p=E01411629100201406T1&custlinkid=669183
1 × Double sided prototype board 4cmX6cm type: 107822J2H link: https://www.banggood.com/Geekcreit-40pcs-FR-4-2_54mm-Double-Side-Prototype-PCB-Printed-Circuit-Board-p-995732.html?p=E01411629100201406T1&custlinkid=669188
1 × DC-DC step down regulator link: https://www.banggood.com/LM2596-DC-DC-Verstellbar-Step-Down-Schaltregler-Power-Supply-Module-p-88252.html?p=E01411629100201406T1&custlinkid=255154
1 × Joystick link: https://www.banggood.com/JoyStick-Module-Shield-2_54mm-5-pin-Biaxial-Buttons-Rocker-for-PS2-Joystick-Game-Controller-Sensor-For-Arduino-p-1566502.html?rmmds=search&cur_warehouse=CN
1 × stepper motor and driver link: https://www.banggood.com/28YBJ-48-DC-5V-4-Phase-5-Wire-Stepper-Motor-With-ULN2003-Driver-Board-p-74397.html?rmmds=search&cur_warehouse=CN
1 × Bluetooth remote link: https://www.banggood.com/Multifunctional-Bluetooth-Remote-Control-Gamepad-For-BlitzWolf-VR-Glasses-p-1041787.html?rmmds=search&cur_warehouse=CN
1 × 10K potentiometer Please note the linked one is not the same I used in my scanner. The one I used was part of an arduino kit and I couldn't find the same one online. But since you only need to adjust the value of the potentiometer once, the potentiometers in the link work just fine: https://www.banggood.com/20pcs-RM065-10K-Ohm-Trimpot-Trimmer-Potentiometer-Variable-Resistor-p-1465829.html?rmmds=search&cur_warehouse=CN