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US-100 Ultrasonic Ranging Module / dual interface pulse/ UART mode
Ultrasonic Ranging Module / dual interface with pulse and UART modes.
We have a good How-To for these modules in Pulse Mode On Our Arduino-Info WIKI here.
Note: In pulse mode (UART mode jumper removed) this unit operates like the types HC-SR04 and SRF-06 and works with same software.
Main technical parameters :
1) DC power supply: DC5V
2) Current: <10mA
3) Sensor angle: 15 degrees or less
4) Detection range: 2CM-4.5M
5) High precision: up to 0.5mm
1 : VCC power supply (power supply range of 2.4V ~ 5.5V ).
2 . In UART mode, connects to Serial OUT. When in level-triggered mode, this is the external Trigger terminal.
3 . When in UART mode, connects to Serial IN. When in level-triggered mode, this is the returned echo duration signal.
4, 5 connected to GND
Using the US-100 Distance Sensor in Serial Data Mode
Place the jumper block on the operating mode selectionpins to choose serial data mode. Attach the module to a serial port on your microcontroller. The Trig/TX pin connects to your microcontroller's TX serial transmit line. The Echo/RX pin connects to your microcontroller's RX serial receive line. Set the microcontroller's serial port to use 9600 baud at 8-N-1 (eight data bits, no parity, one stop bit).
To start measuring the distance, output a 0x55 over the serial port and read back the two byte distance in high byte, low byte format. The distance returned is measured in millimeters. Use the following formula to obtain the distance as millimeters:
- Millimeters = FirstByteRead * 256 + SecondByteRead
This module can also output the temperature when using serial output mode. To read the temperature, output a 0x50 byte over the serial port and read back a single temperature byte. The actual temperature is obtained by using the following formula:
- Celsius = ByteRead - 45