3d printer bebopr+ cape

help needed. i am trying to build a 3d printer using a beaglebone black but i m stuck because of unavailability of bebopr+ cape . its too much expensive for me… please recommend any alternative or refurbished cape … affordable price … thanks


You can drive unipolar stepper motors by a simple darlington trasistor array (ie. ULN2803 for two steppers). Here’s an example.