# My fathers UNO R3 stopped working all of the sudden **URL:** \ **Category:** UNO R3\ **Created:** [November 13, 2025, 2:00am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968 "2025-11-13T02:00:56Z")\ **Posts on this page:** 13\ **Page:** 2
**Author:** ![outbackhut](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/outbackhut/32/1099892_2.png) [@outbackhut](https://forum.arduino.cc/u/outbackhut)\ **Post date:** [November 13, 2025, 3:36am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/21 "2025-11-13T03:36:55Z")
All you need to do to start with is remove the Uno from the CNC machine -completely!! Put the jumper on the FTDI module to 5v and hook it up to the Uno using my instructions: > [@outbackhut](#): > > - Adapter **GND → GND** > - Adapter **TX → Arduino RX (D0)** > - Adapter **RX → Arduino TX (D1)** > - Adapter **5 V → 5 V** (only if you’re not powering the board another way) > - Adapter **DTR → RESET** through a 0.1 µF cap for auto-reset And then run `avrdude -c arduino -P /dev/ttyUSB0 -b 19200 -p m328p -U flash:r:dump.hex:i `from your PC the FTDI module is connected to. _ **IF** _ you can pull the hex dump, you’ll be buying a new UNO and uploading the hex to that. If not, we will revisit things we can do. ---
**Author:** ![Siniestro](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/siniestro/32/1245470_2.png) [@Siniestro](https://forum.arduino.cc/u/Siniestro)\ **Post date:** [November 13, 2025, 3:45am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/22 "2025-11-13T03:45:13Z")
let me see if i’m understanding this correctly and correct me if i’m wrong, you are only trying to dump the hex code right? i thought you were saying that this module could be a solution for the faulty usb connection, you want me to connect the module so i can dump the hex code from the board so i can re assemble it and upload it into another board? also english is my second language maybe some things are lost in translation. thanks for the help you are providing, it’s been very helpful. also, the code that you quoted, i have to use the arduino ide software to use it right? ---
**Author:** ![outbackhut](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/outbackhut/32/1099892_2.png) [@outbackhut](https://forum.arduino.cc/u/outbackhut)\ **Post date:** [November 13, 2025, 3:47am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/23 "2025-11-13T03:47:51Z")
> [@Siniestro](#): > > i thought you were saying that this module could be a solution for the faulty usb connection If you can’t dump the hex, it can be made to work as a replacement, but I would advise trying to dump the hex first as it is a bit of a better and more permanent fix to replace the UNO. What caused the 16u2 to blow up? What has that damaged? What is going to wear out next because of that? ---
**Author:** ![outbackhut](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/outbackhut/32/1099892_2.png) [@outbackhut](https://forum.arduino.cc/u/outbackhut)\ **Post date:** [November 13, 2025, 3:49am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/24 "2025-11-13T03:49:52Z")
> [@Siniestro](#): > > also, the code that you quoted, i have to use the arduino ide software to use it right? run it from a linux PC: `sudo apt update` `sudo apt install avrdude` and then run `avrdude -c arduino -P /dev/ttyUSB0 -b 19200 -p m328p -U flash:r:dump.hex:i` in your terminal. Not the IDE ---
**Author:** ![Siniestro](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/siniestro/32/1245470_2.png) [@Siniestro](https://forum.arduino.cc/u/Siniestro)\ **Post date:** [November 13, 2025, 3:50am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/25 "2025-11-13T03:50:45Z")
this conversation is really funny because i respond and in the same time you edit your response and respond with whatever thing i’m asking when i’m writing and then it looks like i’m repeating the same thing you have already said after editing 🤣 don’t worry tho i will try to get that module and then try to do all that (i also work so i’m kinda busy atm) so maybe i will be putting you up to speed next week most likely or maybe later than that. thanks for all the info my friend ---
**Author:** ![outbackhut](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/outbackhut/32/1099892_2.png) [@outbackhut](https://forum.arduino.cc/u/outbackhut)\ **Post date:** [November 13, 2025, 3:52am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/26 "2025-11-13T03:52:00Z")
> [@Siniestro](#): > > this conversation is really funny because i respond and in the same time you edit your response and respond with whatever thing i’m asking when i’m writing and then it looks like i’m repeating the same thing you have already said after editing 🤣 Yeah I’m unfortunately a bit like that, I press reply too fast before I’ve finished thinking it through. > [@Siniestro](#): > > i also work so i’m kinda busy atm No stress, I also work ---
**Author:** ![Siniestro](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/siniestro/32/1245470_2.png) [@Siniestro](https://forum.arduino.cc/u/Siniestro)\ **Post date:** [November 13, 2025, 3:53am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/27 "2025-11-13T03:53:07Z")
it didn’t blow up, it looks fine but it’s not working tho ![IMG_4267](https://europe1.discourse-cdn.com/arduino/original/4X/e/9/a/e9a564a1dd60555d968cdb478cd8a280aacc4c30.jpeg) ![IMG_4263](https://europe1.discourse-cdn.com/arduino/original/4X/2/1/b/21bd34dabe157b1eaf4886fc0796d333a5b339fc.jpeg) ![IMG_4264](https://europe1.discourse-cdn.com/arduino/original/4X/9/f/e/9fe4496e8ccdbbc12a3f1ec5e45986e7fdcca22f.jpeg) ---
**Author:** ![outbackhut](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/outbackhut/32/1099892_2.png) [@outbackhut](https://forum.arduino.cc/u/outbackhut)\ **Post date:** [November 13, 2025, 3:54am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/28 "2025-11-13T03:54:16Z")
> [@Siniestro](#): > > it didn’t blow up Colloquialism. It stopped working hence it has blown up. No actual explosions. ---
**Author:** ![Siniestro](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/siniestro/32/1245470_2.png) [@Siniestro](https://forum.arduino.cc/u/Siniestro)\ **Post date:** [November 13, 2025, 3:55am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/29 "2025-11-13T03:55:16Z")
i know but i’ve seen (in this forum) one that did 🤣 ---
**Author:** ![Siniestro](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/siniestro/32/1245470_2.png) [@Siniestro](https://forum.arduino.cc/u/Siniestro)\ **Post date:** [November 13, 2025, 4:02am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/30 "2025-11-13T04:02:04Z")
last question (it won’t be the last) if want to dump the code i have to use 5v to power the board right? what do you recommend, using 3v and power the board with let’s say a 9v battery or use the module and the 5v output to power the board without an external power supply? ---
**Author:** ![outbackhut](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/outbackhut/32/1099892_2.png) [@outbackhut](https://forum.arduino.cc/u/outbackhut)\ **Post date:** [November 13, 2025, 4:03am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/31 "2025-11-13T04:03:36Z")
Follow this: > [@outbackhut](#): > > Put the jumper on the FTDI module to 5v and hook it up to the Uno using my instructions: > > > [@outbackhut](#): > > > > - Adapter **GND → GND** > > - Adapter **TX → Arduino RX (D0)** > > - Adapter **RX → Arduino TX (D1)** > > - Adapter **5 V → 5 V** (only if you’re not powering the board another way) > > - Adapter **DTR → RESET** through a 0.1 µF cap for auto-reset > > And then run `avrdude -c arduino -P /dev/ttyUSB0 -b 19200 -p m328p -U flash:r:dump.hex:i `from your PC the FTDI module is connected to. Power it from the FTDI module. Keeps everything simple and safe ---
**Author:** ![pert](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/pert/32/217111_2.png) [@pert](https://forum.arduino.cc/u/pert)\ **Post date:** [November 13, 2025, 7:58am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/32 "2025-11-13T07:58:26Z")
I have deleted your other cross-post @Siniestro. Cross-posting is against the Arduino Forum [rules](https://forum.arduino.cc/faq#keep-tidy). The reason is that duplicate posts can waste the time of the people trying to help. Someone might spend a lot of time investigating and writing a detailed answer on one topic, without knowing that someone else already did the same in the other topic. Repeated cross-posting can result in a suspension from the forum. In the future, please only create one topic for each distinct subject matter. This is basic forum etiquette, as explained in [the " **How to get the best out of this forum**" guide](https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/679966). It contains a lot of other useful information. Please read it. Thanks in advance for your cooperation. ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [May 12, 2026, 7:58am UTC](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968/33 "2026-05-12T07:58:37Z")
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed. [Previous page](https://forum.arduino.cc/t/my-fathers-uno-r3-stopped-working-all-of-the-sudden/1413968.md?page=1)