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SF02/F

SF02/F

Laser rangefinder 

Product manual

Table of contents 

Table of figures 

Figure 1 :: The main features of the SF02/F 

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Figure 2 :: Power from the USB port 

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Figure 3 :: Battery power 

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Figure 4 :: Regulated 5 V DC supply 

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Figure 5 :: Dual redundant power supplies 

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Figure 6 :: USB communications 

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Figure 7 :: Analog interface, Analog voltage output 

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Figure 8 :: Digital interface, Digital alarm output 

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Figure 9 :: Alarm indicator LEDs

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Figure 10 :: Serial interface, Auxiliary serial port basic connection 

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Figure 11 :: Serial interface, Auxiliary serial port with hardware trigger 

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Figure 12 :: Digital expansion port

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Figure 13 :: Analog expansion port

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Figure 14 :: LightWare Terminal showing menu options 

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Figure 15 :: Compensating for the height of the landing gear 

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Figure 16 :: Data smoothing 

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Figure 17 :: Height above ground represented by the analog voltage output 

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Figure 18 :: Ground proximity alarm warning 

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Figure 19 :: Labelling on the SF02/F 

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Figure 20 :: Accuracy profile 

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Figure 21 :: Dimension drawings of the SF02/F 

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Figure 22 :: SF02/F with SF02/F Arduino shield (SF02-AS) attached

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Figure 23 :: SF02/F Arduino shield (SF02-AS) kit of parts  

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Disclaimer

Information found in this document is used entirely at the reader’s own risk and whilst every effort has been made to 
ensure its validity neither LightWare Optoelectronics (Pty) Ltd nor its representatives make any warranties with respect the 
accuracy of the information contained herein. 

1. Overview 

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2. Quick start guide 

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3. Making connections to the SF02/F 

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4. Menu options 

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5. Instructions for safe use 

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Appendix A :: Specifications 

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Appendix B :: Accuracy profile 

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Appendix C :: Dimensions 

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Appendix D :: SF02/F Arduino shield (SF02-AS) 

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Revision history 

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SF02/F Laser Rangefinder - Product Manual - Revision 10 

 of 

© LightWare Optoelectronics (Pty) Ltd, 2016

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Summary of Contents for SF02/F

Page 1: ...an be used in unmanned aerial vehicles UAV radio controlled aircraft and robots Digital and analog interface ports make the SF02 F the ideal module for experimenters Features A laser based rangefinder...

Page 2: ...igure 17 Height above ground represented by the analog voltage output 12 Figure 18 Ground proximity alarm warning 13 Figure 19 Labelling on the SF02 F 14 Figure 20 Accuracy profile 15 Figure 21 Dimens...

Page 3: ...The accuracy of the measurement is not affected by the the color of the object s surface or the angle of incidence of the laser beam to the surface The SF02 F is virtually immune to background light...

Page 4: ...sure the SF30 is measuring correctly then click the Disconnect icon and disconnect the USB cable from the SF02 F 8 There are several power supply and interface options available These connections are...

Page 5: ...the screw terminals In this configuration a regulated 4 7 V DC power output becomes available on the 5 V screw terminal and this can be used by external circuitry as a source of regulated power The un...

Page 6: ...power will be drawn from the unregulated supply The dual redundancy power connections can also be accessed via the Digital expansion port see page 9 for further information Figure 5 Dual redundant po...

Page 7: ...face Analog voltage output Alarm outputs The alarm output on the Alarm1 screw terminal is a digital warning signal that becomes active when an object is closer than a preset distance The alarm distanc...

Page 8: ...liary serial port is controlled by one of two triggers The first is a software trigger provided by the host controller through its serial port and consists of the ASCII code for the letter D When the...

Page 9: ...ut 6 5V 9 0V 2 Alarm 3 0 V 3 3 V logic level alarm number 3 3 Ground Ground 4 Alarm 2 0 V 3 3 V logic level alarm number 2 5 5 V 5 V power input or output 6 Alarm 1 0 V 3 3 V logic level alarm number...

Page 10: ...lightware co za Library Documents Software Once the USB connection is made the Terminal window displays the distance reading from the SF02 F Pressing the SPACE bar stops the measuring process and chan...

Page 11: ...where distance readings may best be interpreted from a suitable point on the system rather than from the front face of the SF02 F Figure 15 Compensating for the height of the landing gear Data smoothi...

Page 12: ...ond to the 0 0 V and 3 3 V output voltages These voltages are read by the ADC of the host controller and can be converted back into a distance by using the formula d v 3 3 DH DL DL where d measured di...

Page 13: ...ts a serial string of ASCII encoded data from the SF02 F to the host controller The baud rate of transmission is selected by menu item i and can be any of the standard baud rates from 4800 to 115200 B...

Page 14: ...using the SF02 F There are no user serviceable parts and maintenance or repair must only be carried out by the manufacturer or a qualified service agent No regular maintenance is required for the SF02...

Page 15: ...supply voltage 6 5 V 9 0 V or 5 0 V 0 5 V DC Power supply current 150 mA maximum Outputs interfaces Analog serial and digital Dimensions 27 x 59 x 86 mm Weight 69 g 2 43 oz Mounting 4 x M3 4 x 4 40 C...

Page 16: ...ard Arduino Uno compatible host controller All the pins for the digital and analog ports are passed through the SF02 AS and can be selectively connected to the Arduino port pins An additional prototyp...

Page 17: ...lude Analog expansion port section page 9 Update Figure 20 Accuracy profile graph page 15 Include Appendix D SF02 F Arduino shield page 16 Rev 7 2014 11 21 TLP Updated Appendix A Specifications with F...

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