Getting Started

Button for RS232/TTL Choosing

The first basic step to communicate with the model is to choose the serial level_TTL(default) or RS232. We step forward over the last version3.2 which by jumper, now we could do it by pressing the only one button on the board for 1 second, after the light turn off from state-on, release the botton. Repower again, the indicator appears to flash like once long and once short -present TTL level output, once long and twice short flash presenting RS232 level.

Do not connect the sensor to TTL MCU when the output mode is set to RS232, doing so will permanently damage the unit.

Technical Descriptions

• Out of the use of a better ranging method, the measurement distance is further and more stable. if there is a need for customization, please contact the company.
• The module uses RS232 serial port for higher reliability, and the data can be collected through the computer serial port, which is very convenient to write communication programs.
• Serial level selected from the skipped stitches to button, user can easily select RS232 or TTL-level output level output by pressing the settings( after reboot ).
• The measured distance can be output via PWM, which eases the use process of the module.
• Pre-set a comparative value for the module, under the mode of automatic measurement, if the measured distance value is smaller than the pre-set value, the pin COMP/Trig will output a low level. In this way, this module can be used as an ultrasonic proximity switch.
• The module is equipped with the funciton of servo controlling. Under the mode of non-automatic measurement, it can combine with a servo into a 180° measuring module to scan the obstacles at the range of 0~180°.
• The module has a 123 bytes of EEPROM to memory whose values are kept when the board is turned off.
• The built-in temperature compensation circuit of the module is able to increase the accurary of the measurement.
• The module has a bulit-in temperature measurement component to read the environmental temperature with a resolution of 0.1℃.
• Power reverse protection
• Automatic measurement of time interval can be modified.
• Analog voltage output, voltage and the measured distance is proportional.