The project consists of creating a smart cane for blind people and it contains three utlrasounds sensors, a transistor to amplifive the corrent provided by the micorcontroller, a diode to to control the electrical intensity direction, a capacitor to keep the excess of current from the three vibration motors. The smart cane vibrates in a proportional way depending on the distance of an object and detectes objects located on the right side, the left side and the front side. All will be controlled by an Arduino or ESP32 microcontroller.