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Tutorial DIY load cell brake pedal (short tuto)

Discussion in 'DIY peripherals' started by RacingMat, Nov 26, 2014.

Page 6 of 6
  1. I9k[toro]

    I9k[toro] New Member

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    hi here's about the load cell

    Attached Files:

    I9k[toro], Feb 7, 2021
    #101
  2. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    if you have two, you can stack them and use the first schematic

    if you have only 1 load cell with 3 wires, use the second schematic
    • Like Like x 2
    RacingMat, Feb 8, 2021
    #102
  3. Alecont

    Alecont New Member

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    Hello, greetings from Argentina. I want to ask you a question, I want to make a similar amplifier for my 100kg load cell for the brake. But the person who printed me the PCB asked me for the "files" to print it, you could help me with that ??

    And another question, for my load cell 100kg 4 wires are well the following components:
    - INA 122PA
    - Ceramic capacitor 0,22uf 50v
    - Trimpot cermet 1k 25 tours
    If not, what do you recommend changing ??

    I'm sorry to bother you, is that doing something like this here in Argentina is expensive, and I'd like to be safe and spend money just once.
    Thank you very much, Sorry for the inconvenience and my English.

    Atte Alexis.
    Alecont, Apr 14, 2021
    #103
  4. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    hi!

    stick to 100nF capacitor

    I added the pdf in the first post ;-)
    • Agree Agree x 1
    • Informative Informative x 1
    RacingMat, Apr 14, 2021
    #104
  5. Alecont

    Alecont New Member

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    Thanks a lot!!
    Do you think you could replace ina122 with ad627 or ad623 on your PCB ?? Or do I need a board with different design ??
    Alecont, Apr 22, 2021
    #105
  6. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    RacingMat, Apr 24, 2021
    #106
  7. VECTROUM

    VECTROUM New Member

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    Hello, can I use INA114PA οn this project because I can't find INA122.

    Thank you.
    VECTROUM, Sep 3, 2022
    #107
  8. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    hello,
    INA114 has 3 op amp and it seems it has better specs than INA122 https://www.findic.us/price/ina114-dzldm0aOz.html

    It can be used as a sensor amplifier as well :) but maybe not with the same values of resistor for the gain... Check the specs
    RacingMat, Sep 5, 2022
    #108
  9. Arta Yasa

    Arta Yasa Member

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    Hi broo, i have try it, but when i check the signal alwys show 5v, when i turn the trimpot nothing change sirr, what is the problem sirr???
    Or can some body help me??
    This is my board.

    Attached Files:

    Arta Yasa, Dec 28, 2022
    #109
  10. RacingMat

    RacingMat Well-Known Member Gold Contributor

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    nice pcb layout!
    did you check the continuity between the sockets? to check your soldering
    RacingMat, Dec 28, 2022
    #110
  11. Arta Yasa

    Arta Yasa Member

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    Yes i check already, but now working when i jumper output to gnd with resistor, and after work i remove the resistor still working, i dont know what happen
    Arta Yasa, Jan 16, 2023
    #111
  12. NigaMan

    NigaMan New Member

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    hi, tell me, which controller do you use for this board? and if you can, share the plateau and sketch
    NigaMan, Sep 23, 2023
    #112
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