Picture of Glow Bone! LED Night Safety Dog Collar Doohickey
Make you dog light up during your night-time walks! Still on an LED high (and still have a lot of LED stuff left over from my first project), I decided that it would be helpful to make some sort of light doohickey that I can attach to my dog's collar when I walk him at night. His black fur has a nice sheen, but it sure makes it difficult to see where he is and *what* he's chewing on at night (ewww) at the not-so-well-lit dog park near my house.

The end result is a nifty mod resin clip that shines a semi-diffused LED light operated on 2 AA batteries through a switch. I used a silicone mold and clear resin to make the body (it was my first time casting!). Of course, a lot of these steps can be modified to personal preference. But the most important thing is: make sure that the simple circuit is safe and secured, and that the resin body + battery case is not too heavy! You might need to adjust what battery source and circuit you will need based on the size of your pet. Cisco (pictured below) is 90+ pounds.

(1) set of mold making rubber kit
(1) set of clear resin casting kit
(1) sandpaper at 150
(4+) mixing cups
(3+) wooden stir sticks
(1) can of mold release spray
(1) container for the mold
(1) object you want the mold of, in this case, a doggy bag bone-shaped dispenser
some foil
some coins
*optional (1) pack of air-dry molding clay if you want to make your own bone

(1) 2 AA batteries
(1) battery case for 2 AA batteries (the one I got actually had the switch built in)
(1) 3.6 volt white LED (has no dimming or problems lighting up with the 3 volts from the batteries)
(2) velcro dots
a bit of electrical tape
a bit of chromatic/reflective tape
(1) dorky name tag clip
(1) strong cement glue or super clue

-rubber gloves
-soldering iron
-air dusting can spray
Attmos3 years ago
i love this idea. used the concept in one the i made. thanks for the inspiration. i posted it if you want to take a look.

have fun
MsJaxFla4 years ago
Cisco is so beautiful, love that sweet face. I doubt I can do this, but is it feasible for a little almost five pound girl puppy?
joknrok4 years ago
Your dog looks like my boy Rocco. Rott/Dobie = perfect mix. Have only seen a couple. http://www.flickr.com/photos/10985010@N06/5179664647/
djzadjza6 years ago
wow dude thats awesome!!!!!!!!!!!
Kruton7 years ago
what a pretty dog great instructable btw too
Can you post a link to the supplier where you got the mold making rubber and casting resin kits? I know Smooth-on and a few other sell this type of product but they seem to specialize in larger quantities. Thanks.
momo! (author)  Handsome-Ryan7 years ago
Sure! I got them at Utrecht, Pearl Paint, and Ace Hardware. All of those places offer the smaller "kit" quantities.
Thanks! I found clear casting resin @ AC Moore. I also noticed that they sell brush-on latex rubber but I think urethane like you used would be better. 5/5 for this instructable. Great idea!
Lincoln8 years ago
Sweeeeeet! I love it.
mattface8 years ago
hehe, dog
NachoMahma8 years ago
. That is great! I don't have the talent to make my own, but I will be looking for something like it in the stores. . I have a 40 pound (~18kg) Pit Bull Mix (I call her a Pit Lite heehee) that loves to jump the fence and I worry about her getting hit by a car at night. No problems with the AU Cattle Dog, she's seldom more than 10 feet (~3m) from me and doesn't even wear a collar.
that last picture of your dog looks almost professional good job on the instructable by the way
pawtrax8 years ago
Great to see and read about your project - great idea. I was particularly interested to read your comment about the variation of a flexible body using flexible rubber silicone creating a i-pod type skin. I have aproject in mind that requires a substance like this which will result in a 'charity band' type substance. I am from the UK can anyone tell me what this type of liquid silicone is called - is it some sort of cold pour compound.
awesome job dude!
dchall88 years ago
I really could have used this when I had my black chow-chow. She would take off in the night and that's all she wrote. If she was less loyal, she would have been gone.

Currently I have a cream colored chow-chow who is much more loyal and much easier to see in the night, but still...on a dark night you can't see your own hand in front of your face. Sandy wears a red spherical blinkie that I got for free in a hardware store promotion. It has a small metal snap ring to attach to her collar. The blinkie uses two LR44 type batteries. With these "hearing aid" batteries, the whole unit is very light weight; I haven't worried about bouncing at all. The weakest spot on mine is the switch.

I really like the idea of casting my own shape. I am learning so much about what can be done if you walk the right aisles of the hobby stores. If you want to add a flashing circuit to yours, dan posted Instructables for a flashing bicycle LED light and a blobtronics LED circuit. If you could incorporate the three Instructables together, you could have a great concept.

I don't think I would use a white LED unless it flashed. A white light looks like too many other light sources. Anything flashing would really help, and another color would help set your dog apart from someone with a flashlight. I'm experimenting with blue LEDs.
icebird8 years ago
This is an adorable photo!
trialex8 years ago
Nice one! My dog is a toy poodle, and is pitch black. try spotting that from 50 metres away! At the moment we use a cheap LED bicycle light from a dollar store. It works well, but I love the effort you have put in with casting up your own tag. Did you consider using flashing LEDs or incorporating a small flasher circuit? I find that if I use the flashing setting my dog's visibility is definately improved. I want to try to use one of those LED scrolling dog tags you see on eBay to scroll a contact name and number. I think it would be bright enough to use as a warning light too.