Default value for maximum measurement distance is 4m, since HC-SR04 sensor can't measure reliably beyond that. However, if you are using another sensor or if you you don't care about distances larger ...
From Analog Devices data sheet: (http://www.analog.com/media/en/technical-documentation/data-sheets/AD9850.pdf) "The AD9850 is a highly integrated device that uses ...
Abstract: Heart health is one of the parameters of one's health condition. Besides using the ECG machine, heart conditions can be determined through blood pressure measurement. Patient's hypertension ...