The PING's sensor measures distance using sonar; an ultrasonic (well above human hearing) pulse is transmitted from the unit and distance-to-target is determined by measuring the time required for the echo return. Output from the PING's sensor is a variable-width pulse that corresponds to the distance to the target.Interfacing to the BASIC Stamp and Javelin Stamp microcontrollers is a snap: a single (shared) I/O pin is use to trigger the Ping sensor and "listen" for the echo return pulse. And the intelligent trigger hold-off allows the PING to work with the BS1! An onboard three-pin header allows the PING to be plugged into a solderless breadboard (on a Boe-Bot, for example), and to be connected to its host through a standard three-pin servo extension cable.LIST OF TECHNICAL SPECIFICATIONS:
- Simple pulse in / pulse out communication
- Indicator LED shows measurement in progress
- Input Trigger - positive TTL pulse, 2 uS min, 5 uS typ.
- Echo Pulse - positive TTL pulse, 115 uS to 18.5 mS
- Echo Hold-off - 350 uS from fall of Trigger pulse
- Burst Frequency - 40 kHz for 200 uS
- Size - 22 mm H x 46 mm W x 16 mm D (0.85 in x 1.8 in x 0.6 in)