I saw the various posts about these shields, read their descriptions, and looked over their pinouts a bit. I think the similarities and differences are fairly clear at this point. If I understand correctly, the P&T shield drives up to three servos directly off the PWM GPIO pins and the Servo shield drives up to eight servos via I2C. What I don’t understand is what advantage the P&T offers. Does it simply predate the Servo shield and became essentially redundant once the servo shield was developed, or does it provide some genuine advantage over the servo shield such that one might have a “decision” to make between the two shields?
What would I gain by choosing the P&T? What would I lose by choosing the Servo shield? The Servo shield’s advantages are fairly obvious: five additional servos while simultaneously freeing up three GPIO lines (to say nothing of the fact that the LED shield ties up two servo lines, further motivating the Servo shield over the P&T). But the P&T’s advantages are not yet clear to me. Have I overlooked something here?
(disregarding the fact that one can use both shields simultaneously, which I already realize).