SRF05 Technical Documentation
SRF05 - Ultra-Sonic Ranger
Technical Specification
Introduction
The SRF05 is an evolutionary step from the SRF04, and has been designed to increase flexibility, increase range, and to
reduce costs still further. As such, the SRF05 is fully compatible with the SRF04. Range is increased from 3 meters to 4
meters. A new operating mode (tying the mode pin to ground) allows the SRF05 to use a single pin for both trigger and
echo, thereby saving valuable pins on your controller. When the mode pin is left unconnected, the SRF05 operates with
separate trigger and echo pins, like the SRF04. The SRF05 includes a small delay before the echo pulse to give slower
controllers such as the Basic Stamp and Picaxe time to execute their pulse in commands.
Mode 1 - SRF04 compatible - Separate Trigger and Echo
This mode uses separate trigger and echo pins, and is the simplest mode to use. All code examples for the SRF04 will work
for the SRF05 in this mode. To use this mode, just leave the mode pin unconnected - the SRF05 has an internal pull up
resistor on this pin.
http://www.robot-electronics.co.uk/htm/srf05tech.htm (1 di 4)09/03/2007 15.41.31
