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    Cheap linear actuators from Aliexpress

    david f
    david f
    AMS Treasurer


    Posts : 2397
    Join date : 2010-11-10
    Age : 73
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    Cheap linear actuators from Aliexpress Empty Cheap linear actuators from Aliexpress

    Post  david f Thu May 05, 2022 10:33 am

    Not really a review because I haven't tried one, but an article in the June 2022 issue of "Practical Electronics" points out that these are getting much cheaper.

    Could have uses in submarine applications requiring a bit of "linear grunt" e.g piston tanks, trim weights??

    Possible choice below:

    Cheap linear actuators from Aliexpress Action10


    30mm/50mm/100mm/150mm DC 12V 30N/60N/90N/150N Linear Micro Actuator Motor Controller Mini Electric Push Rod Putter
    4.8
    71 Reviews
    350 Orders
    US $19.67
    Speed ​​(rpm) : 30mm
    30mm
    50mm
    100mm
    150mm
    Tension (V) : 150N
    30N
    60N
    90N
    150N


    Last edited by david f on Thu May 05, 2022 11:15 am; edited 2 times in total

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    geofrancis


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    Post  geofrancis Thu May 05, 2022 10:53 am

    they work ok, I use them for home automation applications like opening windows. the main problem is they dont have feedback so you cant set it to a position only select more or less.

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    david f
    david f
    AMS Treasurer


    Posts : 2397
    Join date : 2010-11-10
    Age : 73
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    Post  david f Thu May 05, 2022 11:01 am

    Thanks for the feedback.

    Yes, I suppose the downside of having something all-enclosed and compact is that it may be difficult to get a magnet in to act as a trigger for a Hall switch proportional circuit e,g

    https://www.theassociationofmodelsubmariners.com/t1774-arduino-proportional-control-of-a-piston-tank?highlight=piston

    I assume they have limit switches built-in? (Later edit: The spec says "Yes"!)


    David
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    tsenecal
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    Post  tsenecal Thu May 05, 2022 5:51 pm

    these are the linear servos i was hoping to get three of to see if i could make them work together to move a piston for a ballast tank... at $100 a pop it would make for an expensive ballast tank, but not beyond the realm of possibility.

    https://www.servocity.com/lightweight-linear-servos/

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