STICK FOR The Blind

A stick for the blind proposed here is an assistive device that helps visually impaired individuals navigate safely.

- SURESH CHANDRA DWIVEDI

It features an infrared (IR) sensor that detects obstacles and activates a buzzer to alert the user. A 9V battery powers the circuit for convenient operation.

Lightweight and portable, the stick enhances mobility by providing real-time feedback on surroundings. It integrates an IR sensor module, a PNP transistor, and a piezo buzzer to detect obstacles and issue audible alerts. Compact yet highly effective, the circuit improves safety for visually impaired individuals.

The IR sensor module operates by emitting and receiving infrared signals. When it detects an obstacle, the transistor amplifies the signal, triggering the buzzer. This precise and efficient system enhances user confidence and independence. Fig. 1 shows the author's prototype.

Circuit and working

Fig. 2 shows the circuit diagram of the stick for the blind. It is built around an IR sensor module connected across CON2, a PNP transistor BC558 (T1), a buzzer (PZ1), and a few other components. A 9V battery is sufficient to power the circuit.