Fat Pet Feeder is a fully automatic 3D printed arduino pet feeder. Use it for cats, small dogs or maybe rodents? Keep your pet diet healthy, keep the pet food fresh, keep them fed while not at home, make this DIY project with your kids.

Personal website: https://momwillbeproud.com

Help me making these videos and new projects, join my patreon and get the files, early access, behind the scenes content:
(—patreon discontinued—)

Buy STLs & F3D files:

Parts required:
SpringRC SM-S4303R continuous rotation servo – https://amzn.to/2YoAU0y
Arduino nano clone – https://amzn.to/2YqMQPn
3x Microswitches – https://amzn.to/2Hdo0N2 https://amzn.to/2PUCYtU
Breadboard – https://amzn.to/2PW5Phy
Prototype PCB – https://amzn.to/2Ymaht6 https://amzn.to/2vPhOEf
DC connector – https://amzn.to/2VgY5rw
4x M4 screws – https://amzn.to/2VA4Vxu https://amzn.to/2HeUaYC
5V 3A power supply – https://amzn.to/2VvufEs

For the battery version:
3x D size batteries – https://amzn.to/2Q38NRy
LM2587 boost converter – https://amzn.to/2YkXBm6
IRL540N mosfet – https://amzn.to/2LwId4n
DS3231 RTC – https://amzn.to/2Jz6Uun
Capacitors – https://amzn.to/2LwIhB9 https://amzn.to/2YiCpgD
Battery contacts – https://amzn.to/2Yofn7R
Atmega328p-pu – https://amzn.to/2Ynayvw

Code example:
–Wall socket version with 8 hours delay:
–Battery version with button:

How to connect RTC:

Leave your comment with a #FatPetFeeder hashtag to participate in a giveaway.
If you need any help with 3D printing, wiring or coding please ask your very specific question in the comments.



  1. Pedro Henrique on June 23, 2021 at 4:23 pm

    Hey, first off all, thank you very much for your efforts and abilities on this project!! I just brought your 3D Files, but i need them in other formart (SLDPRT), can you send me, please?

  2. thermo soup on June 23, 2021 at 4:23 pm

    How big is your 3D printer

  3. x crpto on June 23, 2021 at 4:29 pm

    Hi sir , I bought the files , but want to cancel the button and make it by schedule, and how to add WiFi camera on it


  4. Furrymallet on June 23, 2021 at 4:29 pm

    Thank you for the awesome vid. I’d like to know: Is it food safe to use any standard PLA material? That’s my main worry with 3d printing a cat feeder. Also: In your other video where you used a pringles container, did you experience any jamming of the food holes?

  5. Ilan Perez on June 23, 2021 at 4:29 pm

    I am so excited to try and make this. Thanks for the work

  6. Jonathas Amaral on June 23, 2021 at 4:31 pm

    Hey, nice project. Just to be clear, the LM2587, IRL540N, capacitor, etc are necessary only for the battery version? If I want to use the power supply, I will need only the arduino and servo. Is that right?

  7. Grant C on June 23, 2021 at 4:32 pm

    This is awesome

  8. Fred Kelly on June 23, 2021 at 4:33 pm

    Hi there, thanks so much for an awesome project. I am trying to adjust the FeederInside part to fit a slightly smaller servo 40.5×19.8mm – I’m still a F365 newbie and wondered if there’s an easy way to do this (e.g. editing a parameter)? Much appreciated!

  9. Aman deep on June 23, 2021 at 4:33 pm

    You really explained it well❤️ what if we use spiral conveyor shaft to dispense food instead of that rotary blades. Also did your food become humid?

  10. Aron on June 23, 2021 at 4:36 pm

    this project is so well thought out. Love the design. #fatpetfeeder

  11. Firdaus Kamarudin on June 23, 2021 at 4:37 pm

    Hi can anybody help me with the parameters? I have not tried fusion 360 before and whenever I change the parameters it gives back errors. And converting to stl is a mess using Cura. My 3d printer is I3 Mega which has a smaller build plate. Can anyone help?

  12. ЕВГЕНИЙ АВЕРКИЕВ on June 23, 2021 at 4:37 pm

    Привет, купил файлы f3d, заказал всю начинку по ссылкам, но ненашел схему подключения, с транзитором и датчиком времени…

  13. TeulisDG on June 23, 2021 at 4:37 pm

    I am going to attempt to make this

  14. Ana Luiza on June 23, 2021 at 4:38 pm

    Amazing! Thanks for sharing <3

  15. EnderLemon on June 23, 2021 at 4:38 pm

    This is sick

  16. terragady on June 23, 2021 at 4:39 pm

    Does not the food get stuck there between wheel and compartment? Like the pieces of food stuck between?

  17. Maria De Los Angeles Luis Sosa on June 23, 2021 at 4:42 pm

    Hello, I wanted to attempt this project and I’m putting together the list of parts into my cart. I’m new to fiddling with electronics, so what exact wires are you using? There’s male to female and other variations. I’m not sure which one I’m supposed to use. Don’t want to use the wrong wire and make something explode!

  18. Andrey Isupov on June 23, 2021 at 4:44 pm

    7:24 ахах. Мой кашак захател такую кармушку😁 🐅

  19. Make Anything on June 23, 2021 at 4:44 pm

    Fun project for pet owners. Great presentation!

  20. Chahal Jovial on June 23, 2021 at 4:49 pm

    I want to know if this 3D printed model parts will fit in for the fully automatic feeder as well, which u had shown in your other video. The second one made with cans

  21. Lucas Bello on June 23, 2021 at 4:49 pm

    Hey, Alexander.
    I tried to contact you in the Cubebrush site for more information, but no success. Do you have an contact mail address? thanks.

  22. DemzCraze 101 on June 23, 2021 at 4:49 pm

    Nice project. Want one for my pet.

  23. Petr Sourek on June 23, 2021 at 4:51 pm

    Hello, so there are 2 of them, one is battery operated (fully) and the other is using wall connector ? I have problem to think, why would I need to combine both.

  24. 파루_YouTube on June 23, 2021 at 4:53 pm

    Can I replace the continuous rotation servo with a strong DC motor? I don’t know where in the breadboard to plug the DC in, so I hope you can possibly help me. You don’t have to spend a lot of time (cuz life span is limited) because this is a simple task!

  25. Anton Ivanov on June 23, 2021 at 4:53 pm

    открывай ИП и начинай продавать!

  26. aferna Codes on June 23, 2021 at 4:54 pm

    that’s pretty cool. I don’t have a 3D printer, is there one you recommend to print large sizes like this?

  27. Luís Almeida on June 23, 2021 at 4:54 pm

    I, i want to make a automatic feeder for my reptiles, how can i make a servo turn 51degres every 48h

  28. Rachel Montgomery on June 23, 2021 at 4:56 pm

    We are super impressed with the details and thought you put into this. We’ve been trying to design a 3D printed auto feeder for my rabbits, and this is so much better – we will be setting it up as soon as we can get all the parts together. Ignore the dislikes – there are some people who just do that to be annoying – and keep doing what you are doing. I will teach my husband what patreon is now 🙂

  29. haeppiest1986 on June 23, 2021 at 4:56 pm

    I don’t have time make my own diy, where can i buy something like this? Please 🙏 I need this for my cats

  30. Baby Macho Casia on June 23, 2021 at 4:58 pm

    I loved it, please do help me for the arduino code for my pet feeder with innovation of notifer. Please do reply. Thank you!

  31. Smart Solutions for Home on June 23, 2021 at 4:59 pm

    Love it! but how did you teach your cat to operate this feeder? 😉

  32. iperezgenius on June 23, 2021 at 5:01 pm

    How would I connect this to Alexa or Google

  33. Lowus Soft on June 23, 2021 at 5:01 pm

    great job Alex! and explained in an easy way, I’m going to buy the files, I don’t have fusion360 and I don’t know how to use it, but I use sketchup, maybe I can import the F3D files. my printer is 21.5 x 21.5 x 25 (Tevo Tarantula pro) Do you think that is enough?

  34. AVProjectLog on June 23, 2021 at 5:01 pm

    Hi this is exactly what I have been looking for. I went ahead and purchased your files to make this myself. Would it be okay if I made a video out of it? I haven’t posted in a while but would like to go back to making videos. I have a small (really small) channel but I still thought it would ask.

  35. abdurrehman akhtar on June 23, 2021 at 5:02 pm

    how much feed it give one time?

  36. Joshua Thomas on June 23, 2021 at 5:02 pm

    That fritzing diagram seems to be missing the RTC, but should be easy enough to figure it out

  37. Junky da klown on June 23, 2021 at 5:04 pm

    What if you don’t have a 3d printer

  38. Dr. Shane Arpas on June 23, 2021 at 5:05 pm

    Excellent Work!!!!

  39. Дмитрий Держаев on June 23, 2021 at 5:05 pm

    Александр, не увидел, какую 3d программу здесь используете?

  40. Marius Pascu on June 23, 2021 at 5:07 pm

    Hi friend. Can you give more info about portion wheel ?

  41. Shawn Yup on June 23, 2021 at 5:07 pm

    Would you sell one of these pet feeders?

  42. Oscar Serrano on June 23, 2021 at 5:09 pm

    which is the maximum size of the dry food?

  43. Andrew Hoeveler on June 23, 2021 at 5:10 pm

    I’m looking to make this or your earlier DIY cat feeder with two cans or some hybrid of both? Using one of my ESP32 modules. I’d like to power it via solar-charging USB powerbank for my yard, and triggered via motion sensors. I might have a lot of questions… 🙂

  44. Sonya Turner on June 23, 2021 at 5:11 pm

    Wow. This is fantastic.

  45. Hüseyin Tüfekçilerli on June 23, 2021 at 5:12 pm

    Is this better than your previous one made with pringles box?

  46. Aan Yuliansyah on June 23, 2021 at 5:13 pm

    Subscribe and hit the like button. this is awesome project, i hope can make this one for my cat #FatPetFeeder

  47. EnderLemon on June 23, 2021 at 5:16 pm

    a plastic female dc character huh

  48. Harshith on June 23, 2021 at 5:18 pm

    Can you make it using live camera and talking to the pet

  49. Thomas Roger on June 23, 2021 at 5:20 pm

    Hello fun projet. But I have a problem with the shell. the wall deforms during printing thank you for your help

  50. Juan M. Casillas on June 23, 2021 at 5:21 pm

    Awesome work. I do something like yours. See here for the video: 

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