D. Edward Mitchell 16:00, 14 April 2020 (UTC) Hello World!    groupKOS Developer Share —usually UNDER CONSTRUCTION

Notes on stepper motors

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Run at higher than name-plate voltage

Retrieved 13:00, 8 March 2021 (UTC) from https://www.eeweb.com/grinding-coffee-with-a-tinyfpga-board/

August 26, 2020 at 7:07 pm
Re: “… stepper motors is that they don’t necessarily have a lot of torque.”

You may already be aware of this, and if so please excuse the following. If not, when applying step motors a rule of thumb is that you need to run them at at least 4x the ‘nameplate’ rated voltage. Anywhere from 4x to 20x. For example you will not get much torque performance if you run say a 12V motor on 12V. A 12V motor should be run on at least 48 volts. However… when running at the higher voltage you need to use a driver which has a current-limit function. The A4988 chip has a current-limit function but I’m not sure if your driver board has implemented the function. With good torque performance perhaps you won’t need the gear reduction.