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"Simple" light sensitive, Servo Project

Discussion in 'Sensors and Actuators' started by Fox_911, Mar 17, 2017.

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  1. Fox_911

    Fox_911

    3
    0
    Mar 17, 2017
    Hi, Im very green to electronics and this "simple" project is getting the best of me. I want to run a servo off a tiny photoresistor and a 9v battery. I would like to keep everything as small as possible.

    Specs:
    The Photoresistor:
    - Min Voltage-150 volt DC
    -Max wattage 90 mW
    -spectral peak 540nm
    -Light resistance 0.5 Mohm
    -100 10:0.7 ??
    -Responsive time up:20 Down:30
    -Illumination resistance 4

    The Servo:
    -Current draw idle 6mA
    -Current draw stall 350mA
    -Voltage 4.8 - 8.5V

    Thanks for any help!!
    Best Regards, Justin
     
  2. BobK

    BobK

    7,680
    1,685
    Jan 5, 2010
    You will have to clarify what you mean by "run a servo off a photoresistor"

    A servo requires a constant series of pulses whose width determines the position of the servo. Do you mean that the position of the servo should be controlled by the amount of light falling on the photoresistor?

    Bob
     
  3. Externet

    Externet

    733
    154
    Aug 24, 2009
  4. Fox_911

    Fox_911

    3
    0
    Mar 17, 2017
    Thanks Bob, I just learned that, basically I want a light activated servo i just need to know the components i need to make it work. i want the device as small as possible, its for a drone application.
     
  5. Fox_911

    Fox_911

    3
    0
    Mar 17, 2017
    Thanks, It doesnt matter to me if its lite or dim i can control that. basically I want a light activated servo light or no light doesnt matter. i just need to know the components i need to make it work. i want the device as small as possible, its for a drone application. Best Regards, Justin
     
  6. Alec_t

    Alec_t

    2,788
    742
    Jul 7, 2015
    I've offered a possible solution in another forum.
     
  7. Sean Charlton

    Sean Charlton

    1
    0
    Feb 14, 2018
    Hi I know this was a while ago but did you find a solution? And where did you find the parts as Iā€™m looking for similar thing for my drone.
     
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