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HC-12 FIX for bad clones

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Finally you can fix your bad HC-12 clones that has no range!
Turns out, it was only an error on the PCB that you can fix with some solder.
After fixing several of them we did a range test, and it works!!
Want to thank us and show your support?
Buy us a coffee ☕️
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A lot of bad copy hc-12 can be found on ebay, aliexpress and other places. They usually have the si4463 transceiver from silicone labs. The module is really good, there is just a PCB design fault.
With this easy fix you can get full range with the clones as well.
00:00 Intro
00:20 Original vs. clone
01:22 The fix (repair)
02:46 The repair is done
03:12 Indoor test
03:36 Range test

Опубликовано:

7 авг 2024

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Комментарии : 70

@ajrandell01 4 года назад

Glad to see that the fix worked for you guys as well!

@DIYTECHBROS 4 года назад

Thank you so much for sharing this info!!

@cstskater1345 2 года назад

I was having the same problems for a year now. You fixed two of my biggest projects in under 5 minutes. Thank you so much! I bought multiple HC-12 in one go and some of them have been faulty while others haven't

@davidbrooks8621 2 года назад

Excellent guidelines for fixing the problem. You are doing a great job well done to you.

@Bojanus30 3 года назад

Fixed! Thanks! Now the range is much much better without antenna than without fix with antennas.

@pisolo86 2 года назад

I would like to say thank you so much! I ordered my hc-12 and was not sure if was going to work. Well did the test and Ingot 3.1 steady on both for less then 10 pounds is a perfect module. Now I just have to order another esp32 and I will start to finish my flight computer! Thank you!

@edgarwideman737 4 года назад

WOW is all I can say! I spent over a hundred bucks in radios and none of them would work as I had in mind my first one had. I went back to my client where I sold the product to and sure enough that one had an OEM radio and all the others I had been buying are the crap clones! Even one I had purchased from a local tech supply shop here in Toronto Canada! I made a solder jumper as explained and now they have the range I needed! Thanks soooooo much!

@DIYTECHBROS 4 года назад

Perfect!! Love it when we get feedback like this 🤠

@tusharkotian4410 2 года назад

Thanks a lot!!! I was unable to get more than 3 meters of range. This fix solved the issue!

@plymouthrovadventures.646 2 года назад

Thanks for the Heads-up and the Fix.

@petersonong4090 3 года назад

You are a life saver brother. Subscribed.

@DIYTECHBROS 3 года назад

That's super :-)

@VauxhallViva1975 2 года назад

Clones are also a MAJOR issue in what appears to be factory-reject crystals being used by the cloners now, that make them off-frequency from what you set them to, and make them have poor modulation also. This prevents them from working in the same network as other genuine HC12 modules. You have to remove the reject crystal, and replace it with a genuine one from a reputable parts supplier. Once you do that, that corrects the frequency and modulation issue also and they work fine.

@raffyturc 4 года назад

hi. glad it works! might as well check my HC-12 for the 3v3 reading. btw, those 2 smd components pointed out , are capacitors. cheers 👍

@DIYTECHBROS 4 года назад

Oops... from just looking at the HC-12 they looked like resistors, but, on the image they are not black or have any values on them...

@johnwashell4351 3 года назад

Wow, what a difference. I could only get maybe 30 feet stock. With the mod I get well over 1000 feet. Thanks!

@rancid11999988 2 года назад

It worked!!!! Thanks so much.

@mreza84 4 года назад

Great video, thank you, keep up the good work 👍

@DIYTECHBROS 4 года назад

Thank you :-)

@fabianboshoven6146 4 года назад

Very nice video keep up the great work

@DIYTECHBROS 4 года назад

Thank you :-)

@uvatham 4 года назад

thanks for the information

@pupaecup2604 6 месяцев назад

thank you so much.

@zedsanimations2242 4 года назад

i did this fix and it worked great! i went from 10meters range if i were lucky to 130meters in bad conditions. not bad

@DIYTECHBROS 4 года назад

That’s so great to hear :-)

@DIYTECHBROS 4 года назад

Thank you for sharing!!

@aloklakhera866 3 года назад

Ty for info.👍

@ibrahimsaber9808 3 месяца назад

Thank you guys for providing quality content, I'have tried to order the original one but the site in Chinese where you bought it from, or where I could find it

@planker 2 года назад

Thanks

@briggsmedia 3 года назад

Hi Guys - thanks so much for making this and the first one. Can you tell me the antennas that you used on this test. It looks like the stationary unit had the spring antennal. But what about the mobile unit? I can't quite make it out in the vid. Thanks!

@elecoding6900 8 месяцев назад

well, anydvice from you guys on where to the buy the original one?

@elecoding6900 7 месяцев назад

would you kindly provide the link to buy the original ones?

@t3vakfi 3 года назад

Hello there. If I use the HC-11 instead of the HC-12, does anything other than the distance change? Also, are the AT commands the same for the two boards? I'm waiting your answer. Also, are you planning to shoot a video soon? Your content is really helpful.

@magnetiseur77 3 года назад

These are NOT resistors (surface mount resistors are black/white). These components are CAPACITORS. I have not tried it because my clones works fine for the range needed and I have not the schematic to understand what to be done.

@michaelkushner7181 Год назад

Thank you! But I luckily received good clones with 3.3V on that capacitor. 64mA current consumption while transmitting.

@DIYTECHBROS Год назад

That's good 😊

@RFDarter 10 месяцев назад

I've got the 3.3V, but my range is still only 15meters in open field

@asifalamgir5135 4 года назад

WOW not a single dislike in the video \

@formobile8873 5 месяцев назад

When i open the serial monitor , the hc12 makes error , please where is the problem ? , what thing i should figure out to?

@TheRcEngineer 3 года назад

Interesting but you connect 2 capacitors not resistors

@gepeto1075 2 года назад

is HC-12 compatible with NodeMCU ESP8266 ?

@juma21347 3 года назад

hello friend. I have a problem with botj the original and the clones. in command mode, no matter what command i send. If it starts with AT it returns OK. example : AT+C100 should return OK+100 but it just returns OK, and doesn't change channel at all... any ideas?

@AminShahsavar 3 года назад

Hi, I have found conflicting info on two things that maybe you can help me with? 1.Does the spring antenna have an omni-directional gain pattern or is it directional towards the axis of the length of the spring? 2. Is there a *noticable* difference between 4463 and 4438 chips?

@DIYTECHBROS 3 года назад

It reduces the range if you tilt it toward the other antenna, so it seems like it is omni-directionally!

@AminShahsavar 3 года назад

@@DIYTECHBROS Do you mean that it actually gets worse if both spring antennas are pointing towards each other? This is what I have beein doing all this time, thinking that it increases gain. Your experience is that any direction for Tx and Rx antennas yield the same result? Even when doing your long range test?

@nmartinn100 3 года назад

So u were able to sent data up to around 2000 meters just with the spring ?

@DIYTECHBROS 3 года назад

Yes :-)

@nmartinn100 3 года назад

Nice. I bought two of them and looks like now even a copies have around 3.3 volts on that place where u said. But i still didn't try long ranges just around 2m.

@HadronCollisionYT 4 года назад

What is the range after fixing it

@DIYTECHBROS 4 года назад

Seems like it is around the full range of the original ones, about 1.8 KM. For the full range I would say antenna, antenna placement and interference will affect it more than the chip :-)

@xrphobby1341 2 года назад

How is it possible to have one HC12 module as transmitter and send data to multiple HC12 receivers? Thank you.

@DIYTECHBROS 2 года назад

Hi! In general, the HC12 just receive data. It does not know if other devices also receive the same signal. If you want to address only one HC12 at a time, you could start with a number and program each one to only read data when it starts with 1 for HC12 #1, or 2 for HC12 #2 etc. Or just a library.

@xrphobby1341 2 года назад

@@DIYTECHBROS many thanks for your reply.

@MPElectronique 3 года назад

Thank you so much. I have unfortunally drop 3 modules in the garbage cause of the distance. If i knew .. i wouldn't :P

@DIYTECHBROS 3 года назад

ohhh.... I know the feeling!

@olafo62 4 года назад

Maybe it wasn't a mistake after all, and a means of limiting the module's power to comply with local regulations in USA. As mentioned in other videos, the maximum power cannot exceed 10mW.

@DIYTECHBROS 4 года назад

That could be it! But since it then only have a range of a few meters it would be bad marketing to limit the device but still sell it as 1KM ++ range.