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Blind Stick Without Code Student Projects in Pakistan
₨ 7,500
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Blind Stick Without Code Student Projects in Lahore
The Blind Stick is a low-cost assistive device designed to help visually impaired individuals detect obstacles and navigate safely. It uses an infrared (IR) sensor module to identify objects in front of the user and instantly triggers a buzzer for real-time audio alerts. The system is powered by a 9V battery, with an LM7805 voltage regulator ensuring stable operation at 5V.
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.
| Parts List |
| Semiconductors: IC1 – LM7805, 5V voltage regulator T1 – BC558 PNP transistor LED1 – 5mm LEDResistors (all 1/4-watt, ±5% carbon): R1, R2 – 1kΩ Capacitors: Miscellaneous: |
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.
