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Re: HC-SR04 Ultrasonic Distance Sensor wiring and programming
NI RoboRio Manual states:
DIO, PWM, and Relay Lines The NI roboRIO provides the following DIO lines: • 3.3 V general-purpose DIO lines on the MXP • 3.3 V digital lines on the DIO, I2C, and SPI ports • 5 V digital lines on the PWM and Relay ports. HC-SR04 Specs State: VCC = +5VDC Trig = Trigger input of Sensor Echo = Echo output of Sensor GND = GND Is the variation between 3.3v (roboRIO output) and 5v (sensor requirement) where the problem may lay? Parameter Min Typ. Max Unit Operating Voltage 4.50 5.0 5.5 V |
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