Learn how to create a custom Arduino shield from scratch in this comprehensive 2-hour tutorial. Master the entire process, from drawing schematics and PCB layout to manufacturing and programming your board. Gain hands-on experience with EasyEDA software as you add Arduino headers, connect components, and incorporate features like power LEDs, servos, external power support, MOSFETs, and I2C temperature sensors. Follow along with step-by-step instructions on component placement, PCB layout optimization, and design finalization. Discover tips for purchasing components and ordering PCBs. Finally, build and test your custom shield, verifying functionality of various features including LED blinking, temperature sensing, MOSFET operation, and servo control.