Let's Make Robots!


Small Alarm Wiring questions

Hello people, I am in doubt for this little project I thought about. This was the main question: Is it right? Mainly about the fact I have no resistors for the switches, I saw some schematics and when using 3v they use no resistors. The connections are: The two separate pads are for a reed switch. The ones on the left side of the PIC are for a small speaker The ones in front of the PIC are the power ones. Right one is VSS and left one is VDD I would be pleased if you could take a minute of your time, look at it and answer my small question. GT