This is my first attempt at designing/building my own circuit and PCB, so please bear with me. I am building a small, portable device that makes use of a small, accurate motor. My goal is to make the unit as small as possible while still achieving a higher torque capability.
Finding A Stepper Initially, I began laying out the motor features I wanted: high degree of accuracy, efficiency (low power requirement), small size with reasonable torque capability, and 360-degree rotation.
Ultimately, I resorted to the 28BYJ-48 stepper because I was having a difficult time finding something between the slightly more expensive/bulkier NEMA and the microsteppers -- neither of which met both goals of the project. I have a few concerns regarding the quality of these motors, namely, the efficiency and life of the motor.
Figuring Out The Correct Stepper Driver I know that the L293 is a common choice for driving small motors, but clearly I'm a glutton for punishment and decided I'd find a different option! After hours of mindless surfing, I had to remove myself from what became a sand trap. (I will say, I have a much greater respect for the development( invested time) of those little PCBs that carelessly end up in landfills).
Anyways, I digress, I am going to stick with the road already travelled and use the L293DD (surface mount). Is there a better option that someone might recommend, or perhaps a better method of searching for components?
ATTINY10 (1024bytes) to upload a small program I wrote that details the operation of the motor.
Is the driver a good choice for my small project. I know that these motors can be purchased with their own driver board, but I've just started using Eagle and would like to design my own PCB -- outfitting the board with different parts and minimizing the overall size of the housing and the design layout to one PCB. There will not be a lot of load on the motor, so I don't intend the combination to reach any maximum values.
Can anyone recommend a good resource to learn about PCB design?