this project consist of creating a smart came for blind people and it contain three ultrasounds sensors, a transistor to amplify the current provided by the microcontroler, a diode to control the electrical intensitey direction, a capacitior 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 the detects objects located onn the right side, the let side, and the front side. all will be controlled by an arduino or ESP32 microcoentroller