Can anyone shed some light on the differences (and why) between these servo driver boards?
They all look the same.. but where the screw terminals are.. they each vary slightly.
They all use the same PCA9685 based chip.
Adafruit version: https://www.adafruit.com/products/815 * no screw terminal - (no biggie) * has a big....transistor? (maybe its a voltage regulator though?) * no big cap (but footprint for it)
Ebay - 1 version: http://www.ebay.com/itm/121651185889?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT * has screw terminal * no big cap (but footprint for it) * has a smaller transistor? (mirroring the Adafruit).. but its a smaller component with some caps/resistors and an LED (Adafruit version has no extra components)
Ebay - 2 version: http://www.ebay.com/itm/201402794566?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT * has big cap * has screw terminal * missing ANY sort of transistor (big or small?) * seems to have cap/resistor/power led by screw terminal..
I have one of the LAST ones.. but upon research I noticed these other variants.. and the differences.
Can anyone shed some light as to WHY these all have slight differences? (and what one would be the best?)
I guess the main difference is that 'transistor' (??) either missing, being big or being small?