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Raspberry Pi is a small credit-card sized computer capable of performing various functionalities. It is heavily used in surveillance systems, military applications, etc. Several generations of Raspberry Pi’s have been released till date. The first generation (R Pi 1)...
Ultrasonic ranging module HC-SR04 provides 2cm to 400cm non-contact distance measurement range. Its accuracy can reach ±3mm with a cycle period of 50ms, which is the minimum time delay recommended before measurements are taken. The module includes ultrasonic transmitter,...