Abstract: This paper presents design and implementation of an ultrasonic sensor based walking stick for visually impaired person. An ultrasonic sensor module, HC-SR04 is used for obstacle detection in ...
The kit comes with 37 parts mounted on small circuit boards. Construction seems to be good, but the markings on the parts are not always clear. Not everything is a sensor, there are many parts that ...
An ESP32 development board. An OLED display module to show the measurements. A Power MOSFET to turn the sensor on and off (to save power consumption during deep sleep). A deep sleep cycle. It dumps ...
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