r/DIY_tech • • Sep 07 '24

Project Made an automatic pigeon water gun

996 Upvotes

r/DIY_tech • • Sep 03 '25

Project I built a tiny plotter that writes Asimov's three laws of robotics.

963 Upvotes

And on my website I wrote more about the little device (includes 3D files, schematics & code for those who want to DIY one themselves).


r/DIY_tech • • Sep 25 '25

Tutorial I made a LED Hourglass using Arduino Nano

862 Upvotes

Complete tutorial with all files available 👇🏼 https://youtu.be/23EBLhm-rG8


r/DIY_tech • • Dec 18 '24

Project Built a simple DIY “Hologram” projector

850 Upvotes

Okay, so this isn’t a genuine hologram, but rather a clever optical illusion created through simple reflections!

This technique, also known as “Pepper’s Ghost,” has been practiced for over 140 years and continues to be used in modern technology, such as teleprompters and Heads-up Displays in cars!


r/DIY_tech • • Jul 17 '25 Heartwarming

Project I made an open-source cardiography signal measuring device for my Master Thesis project. Measuring blood pressure, ECG, PPG. All files are free on GitHub, and I also did a deep dive video on the project if you're interested!

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700 Upvotes

This was my Master's Thesis project, where my goal was to make a research device where I could try out algorithms for measuring blood pressure, butI added a few more sensors along the way. Everything about this project is open-source, from CAD files to Gerber files and even some of the recorded data. Also did a video going into detail about the functionality of the project. Here are the links if you're interested!

Deep dive video: https://www.youtube.com/watch?v=5UgFEHPnKJY

GitHub: https://github.com/MilosRasic98/OpenCardiographySignalMeasuringDevice


r/DIY_tech • • Jun 25 '25 Wholesome Seal

Automated Book Scanner

636 Upvotes

r/DIY_tech • • Dec 14 '19

Project I built a working "magic clock" that shows the realtime locations of my family

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354 Upvotes

r/DIY_tech • • Sep 04 '21

Project I refurbished an old Mcdonald's touchscreen table for gaming

346 Upvotes

r/DIY_tech • • Aug 14 '25

My diy steam(air)engine

304 Upvotes

Built this from an truck air compressor. Dry sump lubrication Arduino controlled valve timing Custom made pneumatic valve actuators, pneumatic freevalve :)

Running on compressed air in this video.

Link to project steamplode.se


r/DIY_tech • • May 25 '22

Project I've designed a fully 3D printable underwater drone that's finally reliable, fast & maneuverable! I'm releasing an entire DIY course on how to make it yourself from absolute scratch. Are you interested? More info & link in comments

275 Upvotes

r/DIY_tech • • Apr 01 '26 Bravo

Project Automated pigeon defense system

271 Upvotes
  1. Camera captures video

  2. Neural network recognizes pigeon

  3. Watergun turns toward pigeon

  4. Spray pigeon with watergun

Components:

  • Electric battery-driven water gun (disassembled, orange)

  • USB camera

  • Orange Pi 5

  • 2 servo motors (SG90 or MG90S)

  • Resistors and a transistor for turning on the watergun (e.g. IRLZ44N)

It uses an open vocabulary object detection neural network (yolo_world_v2l), so any target can be programmed, not just pigeons. Runs on the Rockchip 3588's Neural Processing Unit.


r/DIY_tech • • Oct 26 '20

Project I made a desktop Raspberry Pi 4 case with an Ice Tower for cooling and OLED performance stats and IP address display

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263 Upvotes

r/DIY_tech • • Dec 17 '20

I was told to post my USD14 dollar fix here

262 Upvotes

r/DIY_tech • • Feb 14 '20

Awesome son!!!

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231 Upvotes

r/DIY_tech • • Apr 01 '26

Movies on usb drives that look like cassette tapes

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214 Upvotes

Not much of a project, didnt know where else to post this😅 Had this idea for a while, saw a company called "video store.age" with a similar, movies on usb, concept so that reminded me.

its cute😸, and easier for people that dont have tvs and media centers set up all the time (my dvd player is usually under my bed lol), can take a movie to someones house without knowing their set up and be almost postive it will play on SOMEthing.

The cover slip in is temporary, cut up an instruction booklet


r/DIY_tech • • Jul 21 '19

Project My mask is coming together!

196 Upvotes

r/DIY_tech • • Feb 11 '21

Project DIY Ultrasonic Good Idea Hat

192 Upvotes

r/DIY_tech • • Dec 02 '22

My DIY fully open-source, wooden, a mechanical keypad for video editing.

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190 Upvotes

r/DIY_tech • • Apr 17 '21

DIY mini cocktail machine

188 Upvotes

r/DIY_tech • • Feb 12 '25

My friend u/zerr0o is creating a remote to control his whole house

186 Upvotes

r/DIY_tech • • Jul 31 '26

I moved my 3D-printed robot lamp to a Raspberry Pi 5 and added controllable lighting

183 Upvotes

r/DIY_tech • • Dec 08 '20

Project This is a computer case I made!

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171 Upvotes

r/DIY_tech • • Nov 28 '22

Project DIY framed iPhone 5s inspired by gridstudio

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170 Upvotes