Download PICSimLab - Prog. IC Simulator Lab. for free. PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ... PICSimLab is a realtime emulator of development boards with MPLABX/avr-gdb debugger integration. PICSimLab supports microcontrollers from picsim, simavr, uCsim, qemu-stm32, qemu-esp32, and gpsim.