@zander Dear Ron, Thank you! I feel instinctively that you are giving me exactly the advice I need, and that I am almost there...... but I am ...

Thank you for your reply. As you surmised, in the OUT position, the optics do not need to be positioned accurately: plus or minus 5mm, which is a ran...

@davee Thanks, Dave, and others who have helped me as a total beginner with Arduino. I started without any specsheet for my no-name 4-lead motor,...

Dear inq, I have another question for you experienced stepper users. Should I not connect the Motor ground to the digital ground on ...

Dear inq, Your message is very helpful. If I understand you correctly, I should switch on the Arduino and this would supply the vo...

Dear Robot builder, You ask 'why did we do it?'. My main claim to fame was to be part of...

Dear Dave, Thank you for your lucid explanation of inductance v. resistance. Somewhat off topic now: I am not sure that it is ...

Thank you both for your advice. I am still confused, but at a deeper level. I do not understand how to do the current measurement by the Pololu method...