Member #142686

Member Since: July 16, 2010

Country: United States

  • Product SEN-08713 | about 2 years ago

    I just received a few of these and had problems getting any data out of them at a force in the lower 5% of the range of the sensor. I connected it to the advertised OpAmp circuit and cranked up the gain, but nothing. No change in resistance at low forces. I called Tekscan (the manufacturer) and Dan, an engineer, explained that they do not work at a force less than 0.05lb. I’m not sure about any of their higher force models, but watch out for low ranges!

    ~Rich

  • Product DEV-09949 | about 2 years ago

    Here’s my first crack at a component list with temperature ranges. It may not be a complete list, but it’s a start. Updates & comments welcome:

    Item min_T (degC) max_T (degC)

    • MC33269D-5 -40 125
    • MC33269ST-5 -40 125
    • ATMEGA2560 -40 85
    • LM358D 0 70
    • LP2985-33DBUR -40 125
    • ATMEGA8U2-MU -40 85
    • 16MHz clock -20 70

    Sources

    • http://www.datasheetcatalog.org/datasheet/motorola/MC33269D-5.0.pdf
    • http://www.atmel.com/dyn/resources/prod_documents/doc2549.pdf
    • http://www.ti.com/lit/ds/symlink/lm258a.pdf
    • http://www.ti.com/lit/ds/symlink/lp2985-n.pdf
    • http://atmel.com/dyn/resources/prod_documents/doc7799.pdf
    • http://cfm.citizen.co.jp/english/product/pdf/HC-49_U-S.pdf
  • Product GPS-08334 | about 2 years ago

    Does anyone know the operating temperature range of the GPS eval board?

    I’ve made a list of components based on the schematic and looked up the operating temperature ranges of each component. I’m not sure if my list is complete or I’ve found the appropriate datasheet. Comments are encouraged to help me complete the list.

    Item Min_T (degC) Max_T (degC)

    • FT232RL -40 85
    • MAX232EOWE -40 85
    • LM1117 0 125
    • MBRA140 -65 125

    I’m not sure if this has the LM1117 or the LM1117I. The LM1117I has a minimum temperature of -40degC whereas the LM1117 has a minimum temperature of 0degC.

    Sources

    • http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232R.pdf
    • http://datasheets.maxim-ic.com/en/ds/MAX220-MAX249.pdf
    • http://www.ti.com/lit/ds/symlink/lm1117-n.pdf
    • http://pdf1.alldatasheet.com/datasheet-pdf/view/280660/SEMTECH_ELEC/MBRA140.html

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