HG-C40U Ultrasonic Range Finder Sensor & Module Description * ATmega 8 MCU * Measures distance from the obstacle and sends the data using UART communication. * Within 5mm Resolution * Optional two transmitting mode for various use. - Free Run : With a power supply, sensor transmits trigger and burst signal by itself (for basic application) - External Trigger : External system(controller or processor circuit) controls the trigger signals - for advance application * Two types of input power - Low(5V) for processor circuit usage and High (12V) for controllers. * Factory Default : 12V * Various Setting Option - Free Run / UART Trigger / External Trigger setting - Ring buffer use or not use setting - UART communication baudrate setting - Free Run Trigger interval * Output Signal - Distance Data using UART(ASCII, mm) - Real time ultrasonic wave amplified from actually received ultrasonic. - Real time TTL level square signal(Square Wave) of detection signal. * High performance ASIC Chip for stable transmission and sensitive reception. * Sensor to PC communication using 'Interface Board' (RS232, Power regulator) * Data display using monitor program from PC (Hyperterminal available) HG-C40U Ultrasonic Range Finder Sensor & Module Specification * Communication: UART(TTL) * Input Voltage 5V, 12V(default) * Current Consumption: 20mA(Typ) ~ 30mA(Max) * Frequency: 40kHz * Max. distance: 3.5m (at 5V); 5m (at 12V) * Min. distance: 2cm * Resolution: 5mm -