Sorry for the noob-like question, but I feel like I researched and followed instructions carefully for this extremely simple project, and I now fear I have destroyed either my arduino board, my servo motors...or both.
The project is extremely simple, and involves controlling movement of 2 or 3 servos. I successfully had 1 servo functioning in the required fashion by simply attaching the servo directly to the arduino. To connect a few, however, requires the use of a breadboard. I wired everything up as follows;
I ran the power and earth from a 5v 3amp dc power supply to 2 separate buses on a breadboard. This was done by simply stripping the wire and attaching this to the breadboard. I ran the power and earth from the servo both respectively to the matching buses. From the ground bus I ran a jumper cable to the ground on the arduino. I ran teh signal cable from the servo directly to pin 9 on the arduino board. I powered the arduino board with a 9 volt power supply. when I turned the power on, nothing happened, I waited a few seconds, and turned it all off. Confused, I connected everything back up without the breadboard and separate power supply for the servo. Now, instead of functioning as it was before, the power LED on the arduino is almost non-existant, and the board begins to heat up extremely fast and it gets very hot. The servo does not move at all, but I can hear the sound of it powering it. Also, it began to smell like frying electronics :/ The arduino powers up fine when the servo is not connected to it, both from the USB and from the 9 volt power supply. It still allows a patch to be uploaded to it.
I am not sure what is broken. I am stressing out as this is for a project with a fast approaching deadline. If anybody can offer some advice, I would really appreciate it. Also, apologies if this is not in the right area of the forum.