Hi Guys,
I'm using the following linear actuator to achieve precise positions: http://www.firgelli.com/Uploads/PQ12_datasheet.pdf. I want to send the actuator to the positions and then return the actuator to where it started - i.e. I need it to move in both directions. Thus, I believe that I need to use either an H-bridge or a shield to do so. Does anyone have any recommendations on which and potential methods of wiring the lot (Arduino/ H-bridge or shield/ actuator) please?
Thank you very much,
Iain
The stall current for that actuator is at most 550 mA, so just about any H-bridge module or motor shield (which contains an H-bridge) will work. Follow the manufacturer's recommendations for wiring.
to use either an H-bridge or a shield to do
It is not an either / or situation, you need a H-bridge.
A shield is just a way of connecting components onto an Arduino, so if you use an appropriate shield it will contain a H-bridge.
look out for some l293D (should'nt be a problem with 500mA stall current, if you want to use a much powerful actuator then maybe just join 2 outputs on the H-Bridge IC to support more power.)
of if you want to save some money then you can make your own H_bridge too using fets/transistors as shown here >> MOSFET H-Bridge Motor Control