Flashing LED Dog Saftey Collar!




Introduction: Flashing LED Dog Saftey Collar!

About: I am an electrical repair tech by day and an engineer by night, after work or free time.

In this I show you how to make your own dog safety collar! its ideal for night walks and the occasional joy run. Sometimes my dog gets loose and decides to run the streets, my greatest fear is him getting hit by a car, and we all know most hits are caused by the driver not seeing the dog, and with this the driver would see the dog from a great distance and be more alert! 
with a few steps, electrical componets, common sense and know how you can increase your dogs safety by a mile! After a recent project that needed LEDs from an RGB strip i was left with four sections of LEDs (3 per section) and i knew i would use them just didnt think it would be this soon. The idea for a light up collar was not mine, my friend jokingly said i should make one and well i did just that. I wanted to use more than one color with out an audrino or micrcontroller so i used a 555 timer to make the colors flash instead of running a cycle. 

Step 1: Tools and Componets Needed;

componets: one 555 timer, two 47k resistors and one 2.2uf capacitor and 9volt battery snap (+battery), and four sections of a rgb led strip.
Tools: soldering iron+ solder, hot glue and gun, utility knife, wire strippers
other: collar (obviously lol) 9volt battery, common sense, and a IC pcb.

Step 2: 555 Timer Schematic.

I will be doing a step by step for soldering the circuit to a pcb but i do advise you to breadboard this circuit before soldering.

Step 3: Step by Step for Soldering the IC and Its Componets. First Step.

look at the top of the pictures for the order of the steps.  (left to right) 

note that leg 3 and 5 havent been touched. leg 5 has no connection and  leg 3 is the output to the LED strip sections. dont solder anything to that leg yet.

Step 4: The Dog Collar

its important to attach the LEDs so that they are visible, dont attach them to the collar where they would be hidden by the dogs neck. Its also important to fit the collar to the dogs appropriate size, then over fit it  a little to make up for the space the battery would be taking up. A few people probably would ask if this collar is dangerous to a dog and to that i say use common sense. its the most important thing needed for this tutorial. I mounted the battery so its not in contact with the dogs skin, if it was it probably would be harmless, but to be safe i mounted it in between the collar ropes. Also its important to notee that this collar should only be worn by the dog when you take him or her for a walk. Its main purpose is safety! Takethe collar off, dis connect the battery and put everything out of reach when you are not walking your dog. there is a chance the dog could get it off and chew on it, but its unlikely. just put it in a safe place when you arnt walking your dog. a good expensive collar  is the best choice to use for this. 

Step 5: Attaching the LEDs to the Dog Collar

The led strip sections i used had an adhesive backing. i also used some super glue to ensure they stay put. 
Attach them so they are in the same order as if they were still in a strip. Doing it this way makes connecting them with wires easier.

Step 6: Connecting the Output Form the Timer to the LED Sections and Choosing Colors.

This step is easy but can be a bit confusing for those unfamiliar with ICs. what i did was i found where i wanted to mount the The circuit and i cut two wires (one for + and one for -) that were a bit longer than the distance from the timer to the LED section. solder a wire to leg three of the timer ( i recommend using red, it helps with the polarity) then run it to the 12volt input of the first LED section. (its 12 volt but 9volt works just fine with it) then solder a wire to leg one of the timer (i recommend using black) then solder the end of the wire to the color you wish to have, i used blue as my first color which for some reason is marked G on the LED strip. now here is where it gets a bit confusing, to change the color of the next section you have to choose a new color (i used red, marked R on the strip) then solder a wire to that color and the previous color of the last strip. you use that method to change the colors on all the strips. i know it sounds confusing so if you need help with that part please message me. 

Step 7: Mount the Timer Circuit on the Collar/ Battery Mounting.

so after connecting all the sections with the colors of choice you are left with the timer and the battery snap just flopping around. what you want to do is trim the PCB as small as you can without breaking the connections then mount it to the collar using hot glue, then cut a slit in the collar and run the battery snap in between the two layers of the collar and use electric tape to hold the battery in place. I chose not to use a on off switch for this because disconnecting the battery from the snap is easier and takes up less room. 

Step 8: FINISHED!! :)

now all that is left to do is test it out on your bestfriend! If you used super glue for anything wait a day for it to completely dry before using this on your dog. this in no way will harm your dog if you use common sense. do this at your own risk and i am in no way responsible for any injury. for safe use, only use this collar when you are walking your dog or if you are keeping a good eye on him or her. Do not leave your dog unattended with this collar on, there is a small small chance he or she could take it off and chew on it, the risk is small but any risk isnt worth my dogs health. This collar is intended to keep your dog safe if he or she gets off the leash and runs the streets. Its main reasons are to help you see him from far distances and to lower the risk of a car hitting him. I hope this was a fun project!  and if you have any questions or comments please post! i love hearing feedback. to see a video of my dog wearing this collar please check out the link i will post in the comment section of this instructable! 

Be the First to Share


    • Pocket-Sized Speed Challenge

      Pocket-Sized Speed Challenge
    • Audio Challenge 2020

      Audio Challenge 2020
    • Maps Challenge

      Maps Challenge

    3 Discussions


    5 years ago

    Again me!
    Did the LED strip turn on? Most of the LED strips I've bought need 9V-12V, and 555 timer gives you only 5, am I correct?


    Reply 5 years ago

    555 timers can work with a number of different dc input voltages. Some between 3 to 25. :)


    Reply 5 years ago

    555 timers can work with a number of different dc input voltages. Some between 3 to 25. :)