HackerBox 0051 included this MCU Lab PCB. The MCU Lab is a development platform to test, develop, and prototype with microcontrollers and microcontroller modules. An Arduino Nano, ESP32 Module, and SMT32 Black Pill are used to explore the quick-connect feature blocks of the MCU Lab. The MCU Lab feature blocks include switches, buttons, LEDs, an OLED display, buzzer, potentiometer, RGB pixel, logic level shifter, VGA output, PS/2 keyboard input, USB serial interface, and dual solderless prototyping areas.