So i want to control this actuator, from my arduino uno. Also have a 12v battery pack to provide power to the actuator. http://www.conrad-electronic.co.uk/ce/en/product/191857/Drive-System-Europe-12V-Linear-Actuator-100mm-Stroke-250N-29mms-12389 I have done some reading for the last couple of hours but im still not sure what i need to do. Am i right in saying that i need a h-bridge that can handle 3.2A or over and 12v or over. Would something like this do the job http://www.ebay.co.uk/itm/12V-30V-5A-Bridge-Motor-Driver-Controller-Board-for-Arduino-Self-Balance-Robot-/231083298972?_trksid=p2054897.l4275I need to be able to control the position of the actuator, not just extended/retract it fully. So would i need a relay as well, to allow the arduino to switch the device off/on.
However you have raised a new problem for me. With no internal feedback available, could i simply activate it and record the time taken to travel a certain distance then incorporate that into my code?Might work esp if the load is a fixed amount and your accuracy requirements is not too high. It's certainly worth playing with. Or would that be prone to errors.There is always some amount of error no matter what method is used, it's a matter of determining what accuracy you actually require for the project and then seeing if you can obtain it using timed movements. If not is there some sort of external system that could monitor position?Well there are linear pots that could be mechanically coupled to the actuator although that is not always easy getting the mechanics right.
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