What did the ottomans use to breach the walls of Constantinople?

The Ottomans used large cannons, particularly the massive "Basilica" cannon, to breach the walls of Constantinople during the 1453 siege. These cannons, designed by the Hungarian engineer Orban, were capable of firing massive stone projectiles that caused significant damage to the city's fortifications. In addition to artillery, the Ottomans employed various siege tactics, including the use of ladders and tunnels, to overcome the city's defenses. Ultimately, the combination of heavy artillery and strategic assaults led to the fall of Constantinople.