Arduino Bicycle Alarm and Lights

This alarm is a good way to alert you if somebody messes with your bike. I had a bicycle stolen a while back and decided there had to be a better way to keep my bike secure. When I searched for bicycle alarms, all I could find were alarms that responded to sudden movement or when a lock was cut. Also, the reviews of these products rated them mediocre at best and said they often did not work or gave a lot of false positives.

I therefore decided to create a bicycle alarm to SUPPLEMENT my lock. This alarm in no way keeps people from stealing your bike. It simply draws attention to anyone who messes with your bike without turning off the alarm first. Never use this alarm instead of a lock. Also, I am not responsible for any consequences coming from the reading, construction or use of this Instructable and any materials contained in it.

As far as the lights are concerned, biking at night is dangerous. Legally you must have an approved light system to ride at night. This light set is not approved, so technically you should supplement it with another approved light set. I used only this set for a while and it worked great for me, but you are responsible if you choose to use it. I in no way take any responsibility for your choice to build or use this Instructable.

With that out of the way, let's move on to the construction of the alarm.

Step 1 Things You'll Need

Parts
1- Key switch, SPDT, Key removable in both positions, Goldmine Electronics #G8081
1- NC Reed Switch, Digi-Key #CH406-ND
1- SPST NO Pushbutton
1- 6V DC Buzzer, RadioShack #273-054
1- 5x2.5x2" Project Enclosure, RadioShack #270-1803
1- 47 Ohm Resistor
1- MPS6717 or Equivalent NPN Transistor
1- 28 Pin IC Socket, Digi-Key #3M5480-ND
1- 16.00MHz Ceramic Resonator, Digi-Key #X908-ND
1- 5V Voltage Regulator, Digi-Key #MC7805CT-BPMS-ND
1- Arduino Bootloader Loaded Atmega168, Adafruit Industries
1- 4 AA Battery Holder
Cable Zip Ties
Various Wires
Prototyping Board
Solder
Magnet from Bicycle Speedometer

Optional Parts for Adding Night Riding Lights
4- Super Bright White LED's
8- Super Bright Red LED's or Purchased Taillight
1- Toggle or Slide Switch
1- 270 Ohm Resistor

Other Optional Parts
Battery Connectors
Silicone Caulk

Tools
Soldering Iron
Wire Strippers
Screwdriver
Drill and Bits
Arduino
Computer

Comments

[Advar]

This. Is. Cooool!! :)

[james.mcglashan]

please enter this to the Arduino contest...

[baramunchies]

now add gps and gsm and track your bike back :)

[PyroMonger]

The guy who made this instructable uses gps to track his bike back and shocks the thief who stole the bike with a stun gun (activated by calling a mobile phone) if they are still riding it...I'm sooo making it!

[cheeyah]

I thought about it, but as you can probably tell from the picture, the bike is probably worth less than a gps. this project is more to draw attention to someone trying to mess with your bike than actually stopping somebody from stealing it.

[invisiblelight386]

cool i just did this to my bike last week, i used an old boat alarm, i also hoked up a stereo and lights.

[cheeyah]

By the way, this is my first Instructable, so please leave comments and let me know what you think. Thanks.