Connecting an analog joystick module to Arduino is very simple. The analog joystick module for Arduino has five pins : Ground, Vcc, X-axis, Y-axis and Key or SW .
In the guide, I will explain how to transform a cheap Bluetooth HC-05 transceiver into a breakout board.
The Arduino will receive the speed (a number between 0 and 255) from Serial Monitor or from HC-05 module, and using the digital output and a transistor will controll the DC motor speed.
You can find optical switches on many electronic devices . I found a couple of them when i dissansembled a hp1510 printer. Next, i will show you how to salvage opto switches from old devices and
Laptop webcams can be easily repurposed into external usb webcams. I successfully converted the camera from an MSI MS-1682 cx600x laptop.