I love side projects. They give me the opportunity to flex my creative muscles and tinker with tech like the Internet of Things (IoT) in new ways. ...
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Your hardware setup is a bit too big. You should have a look at ESP32, it can be programmed with arduino as well, but it is much smaller and Bluetooth is already embedded.
Another options, maybe even better, would be to use a nrf51822.
Wonderful. I cannot help but mention the tk911 gps tracker, which requires a gps/mobile sim (not provided, where i live we can get 2€/month sims like that). It comes in much smaller sizes and is about the same price.
I use it for one of my cats who doesn't get back home.
These looks like a fun little side project! Will have to give this a go! :)
Oh super cool! I've been hesitating to work on some hardware projects since everything is closed in my neck of the woods. I think all I'm missing for this is the wireless communicator. Did you order it online or did you already have it?
Hey! I had to order it online, but that was back in January or February.
Bookmarked! This is super cool.
This is so cool! Thanks for sharing!
Lovely tutorial!
You can use Arduino mini which is size of a finger, it’d be easy to package.
Love that title — “The Internet of Dogs” has instant charm and nerd appeal. Here's a full guide-style article or blog post you can use for Medium, your own blog, LinkedIn, or a presentation. Ready?
The Internet of Dogs: How to Build a $50 IoT Dog Collar That Locates Your Pet
In an age where our thermostats are smarter than we are, it's time our furry friends got a tech upgrade too. So I built a DIY IoT-powered dog collar that tracks and locates my dog in real-time — all for under $50.
Here's how you can do it too.
What This Collar Does
Real-time GPS location
Sends location to your phone via Wi-Fi or cellular
Rechargeable battery with energy-saving sleep modes
Simple web or mobile interface to track your dog anywhere
What You’ll Need (Hardware)
Component Description Approx. Cost
ESP32 board Wi-Fi + Bluetooth microcontroller $8–12
Neo-6M GPS module Provides GPS coordinates $6–10
SIM800L module (optional) For cellular tracking fallback $8–12
Lithium-ion battery (18650) Rechargeable power source $5
TP4056 charger module To safely charge battery $2
3D-printed or soft enclosure Dog-safe housing $5–10
Optional: Piezo buzzer (sound alert), LED (status indicators)
Tools You'll Need
Soldering iron + wire
Breadboard for prototyping
3D printer (or order a case online)
USB cable and computer
🧠 How It Works (Simplified)
GPS Module locks your pet’s current location via satellite.
ESP32 reads that location and sends it:
Via Wi-Fi to your cloud endpoint when available
Or via cellular (SIM800L) when out of range
You check the position through a mobile-friendly dashboard or app.
Data is stored in a lightweight backend (Firebase, MQTT, or custom REST API).
Refrence Site petdoubts.com/
Great project, thanks for sharing!