@will @zander @davee I really do appreciate the time you are all spending on helping me! Before Will goes to all the trouble of reproducing m...

@zander Dear Ron, I was worried about floating voltages, so I have wired the switch input (pin 3 on the Arduino)...

@will Alas, no joy this morning. When I run your latest sketch ( the one you sent while it was about 2 am in England) the motor does nothing, whatever...

@zander Thanks for pointing this out! I had no reason to send a sketch to anyone until I discovered this forum, but when I searched the web for a wa...

@will Wonderful! Your cleaned-up version compiled perfectly on my Arduino Uno. I am very excited, but will postpone uploading your sketch to the ...

@will The Word files I make from the Arduino sketches behave in a strange way: they may appear without colour at first. Also, I seemed to see t...

@will Dear Will, I have made the new connection (to the 'enable' pin) and typed in the code. I have attached a copy. ...

@will Here is the diagram

@will It is nearly midnight, so I will be off to bed soon, but I wanted to thank you for your very helpful and detailed reply. The focus of the...

@will I have spent two hours trying to download the zip file with the the codes from the video on Controlling Stepper Motors with Hall Effect Swit...

@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...