Could someone please check my $50 robot eagle schematic?

[SmAsH]

i dont really know, i think it was because there wasnt to many servos going to draw much power. you could throw one in there if you wanted to i suppose.

[Admin]

Voltage regulators needs capacitance at both input and output (and physically close to the voltage regulator), or they will be prone to oscillations, which usually makes them either commit seppuko, or ghost some of the components it supplies.

Why doesn't the original $50 robot board design have capacitors at both in and out of the regulator?

I was being lazy and it worked without it

But its better with caps at both ends, see voltage regulator datasheet for details . . .