I am interested in making a straightforward force application system using a linear actuator (probably the 35lb version of this guy from Firgelli). The plan is to control it using a PID loop reading a load cell. Ideally, I would like to use the load cell setup helpfully detailed here and a 20 kg single point load cell.
Is it possible to both read the load cell and drive the actuator using a single arduino (with multiple shields, if necessary, and an additional power supply)? This would save me the trouble of syncing two boards.
Reading the load cell - certainly. Driving the actuator however will require a motor controller, though you can certainly connect both to the Arduino.
As far as a motor controller goes, take a look at this article to help you determine which you need: robotshop.com/blog/en/how-to … oller-3695
You’ll have the choice of a motor controller in shield format, or one which you need to wire.
Ex: robotshop.com/en/4a-dual-dc- … hield.html
You’ll definitely need a separate power supply for the actuator.
If you choose one in shield format, just be sure it does not use A0 or A1, which are used for the Strain gauge / load cell amplifier robotshop.com/en/strain-gaug … d-2ch.html
