#12 Repairing broken Arduino Nano Clones, Episode 2 - Power
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- เผยแพร่เมื่อ 15 มิ.ย. 2024
- In this video, I'm showing how to troubleshoot and repair a broken Arduino Nano clone. I have two devices that appear to be faulty with some kind of power issue, and I manage to fix both.
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Good information, I would have never expected that it would ever be worth it to fix these but here we are lol
Thank you very much. My module was a little bit different, and the diode I needed to replace next to the regulator LM1117, in my board was just one diode. You can just take off your diode and put a jumper in the same place, but never connect your arduino in voltages upper than 5V when connected in your PC.This diode is a protection, he never let the voltage upper 5V back to the usb cable and burn your usb port.
greetings from Brazil.
Glad you found the video helpful. thanks for the comment!
I had the same problem! And for some reason my diode burned out!
Your video helped me a lot!
I used a DC DC Boost converter and set it to 5 Volts. I connected it to the 5V pin and GND!
And my board worked!
2 of my boards had the same problem!
And 1 had undervoltage!
Glad it helped. Thanks for taking time to comment!
love this video helped me with my clones!!!
Glad you liked it, thx for the comment!
@@MyGeekyHobbynp this solution worked for all but one of my clones. That one originally had no pwr led when plugged in, upon replacing the diode it has Rx and PWR LEDs and then eventually Tx LED lights up but no COMs is established by the PC. I assume this damaged the CH340[C]?
I worked on so many crappy boards that "snipping it out" gave me nightmares of pads lifting off the board. Scary stuff.
I've worked on a few of those nanos, and the PCBs are decent enough. If I discover the fault before soldering the pins I would normally use sharp side cutters to remove the CH340
Excellent repair, on Nano troubleshooting. Thanks.
I noticed that on both repaired Nanos, the power LED was still not illuminating-must have also been blown? Did subsequent usage present any further issues? I ask as, an electronics' newbie, I inadvertently powered up my Nano, from a 3S Li-ion battery, during testing, of a 7805 regulating circuit (to prevent such from occurring: knocking head on table), I built; must have had twin power leads connected. Thought it would have been the AMS1117 blown. You have pointed me the right direction. Thanks.
Finally, as I've never worked on SMD components, what temperature do you set your soldering iron to, for these delicate repairs? thanks.
I am subscribing, & will look at more of your vids, as I like your style,
Thanks for the comment. Once I had the diode swapped both of my Arduino nano worked well, including the LED. The modules continued to work so I believe the repair was successful and long-lasting. Don't worry about breaking things, this is the best way to learn (as long as the costs are not too high)... for soldering SMD the key is soldering iron with a small tip and loads of flux. Good luck and thx for subscribing.
Good job 👍
Thank you very much for the explanatory repair video. Do you mind adding the datasheet link and the name of the diode under the description of the video? Best regards.
Handy Info, I have a fwe of these 'broken' around, and these days, they are worth fixing, as you said.
Any details on the diode you used or ordered?
I ended up using MBR0520LT1G SOD-123 from Aliexpress
Nice video.
Thx Mark, got a few more lined up :)
Hi, this is really a good video. Please mention the name of the diode. Thanks in advance
What kind of problems have you had with the Arduino Nano? I saw that you changed the sdm rectifier diode!!! Then did you solve it? in my case the board is detected but it does not configure!!! Which "COM" port do you use? Thank you very much.
You need to check in the device manager what com port windows assigns to the Arduino board and use that com port. It can be different on my computer and different on your.
@@MyGeekyHobby Yes, I did this step is I tried changing it to com3 and then com7 but it doesn't respond. I have to try to connect it and then uninstall it and then have the computer detect it again. I think that is the 'only solution .... . I will try!!!
Is it off that my usb to serial converter under 5he board doesn't say anything? I have one nano that states ch340, or whatever it is, but the other three are blank.
I wouldn't be surprised, the Chinese vendors have ways to make things "cheaper" so maybe a counterfeit ch340? :) But that would be so funny, considering ch340 is supposed to be cheap alternative to FTDI. Do they work? One thing you can try is to check in device manager if the hardware IDs are the same as the fully marked ch340.
Interesting 👍
Glad you think so!
Could I use a rectifying diode instead of these SMD ones? Thanks
You can, but keep in mind a standard diode will have around 0.7V drop so your Arduino will end up with around 4.3V supply voltage. It’s fine for the atmega controller as the go down to 3.3V, but depending on the circuit you are using the Arduino stuff may miss behave
@@MyGeekyHobby okay thanks. Im probably gonna be using it to only upload a sketch. Im gonna power it from VIN so there wouldnt be any drop right?
@@xspeed98 yep that should be ok
@@MyGeekyHobby Thanks for very quick answer! It happened because I was working with the nano and the 5 volt cable accidently touched the GND
@@xspeed98 no worries, and that is exactly what happened to me. Those Arduino clones are missing a fuse that is in the original design, so that diode ends up taking full current if you accidentally short 5V to GND. I’m sure it will happen to me again so I bought 10 of those diodes on AliExpress , took 2 weeks to deliver but was cheap and I fixed at least 2 of my broken Arduino already :)
My Arduino nano is not showing up in my pc and RX, TX, and PWR leds get's on when plug it in my pc but it shows unknown device what should I do
I suspect the ch340 serials to usb chip is broken ... if you have another nano you can use it to program the first one (this way you can confirm if the 328p microcontroller is still working). It's possible to replace the ch340, might be cost-effective.
I tried to bootload and program nano using uno but nothing is happening to board it's not getting programmed at all
arduino nano code not uploading bro in board problem
where could i find these diodes
Alliexpress is where I got them from
@@MyGeekyHobby thank you...
What was the rating on them...
@@transcendence7684 I used MBR0520LT1G , but any similar diode should be fine
@@MyGeekyHobby thank you man...you just helped me a lot ...
@@MyGeekyHobby what specifications matter for a diode replacement like this one? Is it size, voltage, etc? I'm a little new to electronics on a hardware level so apologies for this beginner question
Sir my Arduino nano ic heated during make water level LCD not show text
have you connected it to 5V?
@@MyGeekyHobby yes I have connected 5 v but sir I look in my Arduino nano 1 SMD which num C106 is disconnect
@@protechnology550 disconnect? you mean it's not there? Maybe you connected polarity the wrong way and IC broken and C106 overheated? It's hard to help you with limited information. Connect power via multimeter and see how much current it's taking... if it's over 20mA the IC is gone.
@@MyGeekyHobby yes sir I think by my mistake this component remove but I have no idea may be during the soldering my iron has touch Ed this SMD sir give me solution?