Hot wire anemometers are available in hand-held packages resembling multimeters, and can cost anywhere from $300 to $1200! This is why we are excited to offer the first small, affordable sensor suitable for electronic experiments and integrated applications alike. The wind velocity is proportional the heat (i.e. It is a thermal anemometer based on a traditional method for measuring wind speed called “hot-wire”. This technique involves heating an element to a constant temperature and then measuring the electrical power that is required to maintain the heated element at temperature as the wind changes. C is a low-cost anemometer with an analog output, designed for use with electronic projects. Get RS485 Wind Speed Transmitter from DFRobot Store or DFRobot Distributor.The Wind Sensor Rev. You can see the accurate wind speed informationįor any questions, advice or cool ideas to share, please visit the DFRobot Forum. Use the terminal to open the folder where the program is located, compile and run gcc -Wall -lwiringPi -o Wind_Speed *.c Open the previously downloaded min.c file, change the device port in the program to the actual one and save itĦ. Type this in the terminal: sudo ls -l /devįind out the device you just connected in.ĥ. Unsigned char ModifyAddress(unsigned char Address1, unsigned char Read wind Address The address where you want to read the The return value ≥0 indicates successful reading, the return value is wind speed, and the return value -1 indicates failed readingįloat readWindSpeed(unsigned char Address) 4. Unsigned char Init(char Modify Address1 For the current address, you can set any address with 0 Address2 The modified A return value of 1 indicates success, and a return value of 0 indicates failure API Function List initialize serial device Address of serial port,In Linux, it is the directory where the device is Return 1 for initialization failure, and return 0 for initialization success Enter the content you want to save file inģ. Sudo dpkg -i b //Install wiringpi libraryĬd. Type the following commands in the terminal one by one cd /tmp After setting, you need to re-power on and restart the transmitter to make this address take effect. Slave response frame (hexadecimal): 00 10 10 00 00 01 04 D8 (7byt), that is, the modification is successful.
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