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It is that time again! SparkFun Electronics will be closed Friday, January 13th for our annual inventory day. Please keep in mind that any orders placed after 2PM (Mountain Time) on Thursday, January 12th will not ship or be prepared for local pickup until we open for normal operations on Monday, January 16th. In addition, tours will resume on Friday, January 20th. Thank you for your patience!

MDS

Member Since: September 3, 2009

Country: United States

Profile

Role

Engineer

Organizations

Chairman - NH Chapter IEEE Robotics & Automation Society

Affiliate Member IEEE Signal Processing Society’s Technical Committee: Design and Implementation of Signal Processing Systems IEEE Robotics & Automation Society

Programming Languages

C/C++, Java, tcl/tk

Associations

Affiliate Member - IEEE Signal Processing Society Technical Committe: Design and Implementation of Signal Processing Systems

Universities

BU: MS Systems Engineering

Expertise

Real-Time Embedded, Sensor Data Fusion, Image/Signal Processing

Interests

Robots/Unmanned Vehicles of all sorts

  • Does anybody know who the manufacturer of this device is?

  • I have four sensor that appear to be very similar (three wire load sensors) from a bathroom scale. I’ve wired them as if they were each ½ wheatstone bridge (using the red wires as the signal) with Back = VSS, White = VDD (3.3v). This gives me two opposing wheatstones. Each pair of signals (red wires) is read by a differential amplifier and fed into an ADC. They are placed back into the bathroom scale frame and set on the floor. Their differential readings for each pair are: -0.00037500 -0.00000000

    with 80 lbs placed on the scale they read: -0.51137500 -0.00075000

    I’ve had one of the sensors out for inspection and placed it back into the scale, I’m assuming this a major contributor to the descrepencies at zero weight placed. Either way, does this sound like correct placement? If so, why would a scale utilize two wheatstones? Thanks for any insight…

  • CRobo
    This device is at the 532nm wavelength, no need for IR (infrared) filtering which is down beyond the 700nm wavelength.
    See:
    http://www.imt.liu.se/edu/courses/TBMT36/artiklar/intro/6.Spectrum.pdf

No public wish lists :(