Hook up wire breadboard projects, parts list
The colors aren't essential but they will help you remember what the wires are connected to!
You can remove the backing to stick it on which is permanent or you can just use double-sided tape. That is, instead of connecting the resistor to 5V or ground, connect it to the Arduino pin socket labeled Parts Atmel ATMega or While LEDs will not work when placed backwards, you don't have to worry about whether it will be damaged: Re-compile and upload it to the Arduino.
We do not require any libraries for this sketch. Plug in the Arduino, you should see the LED light up. The positive leg is slightly longer and if you look inside, the chunk of metal is larger on the negaive side.
A wiring diagram is also known as a schematic. We can wire up to the 5V or 3. Make sure the longer leg of the LED is to the right, connected to the resistor.
We are using analog pin A0 to connect to the sensor. Diecimila Arduino users already have the LED a very very small one soldered onto the circuit board the right way.
After arming the device, when someone enters the room and triggers the motion sensor, a buzzer sounds for 30 seconds or until an authorized fingerprint is scanned via the fingerprint scanner.
Before you change your breadboard, make a guess of what will happen: If not use your debugging skills to figure out what is wrong and fix it! Re-visiting an old friend Start up the Arduino software again and open up the MyBlink sketch from lesson 2.