bro i have a project lol for school this seem cool actually and do you have a Instagram or any account to contact you im IT student but im kinda new about this one

is that working on audrino mega 5 ?

It's great

Beautifully🥵🥵, I'm also doing a Radar system project... I will present it to my sponsor Next year. Can you please share your 3D print design, I know I will struggle a lot when avoiding the twisting of wires.

Got three of them, 1.2 & 2x2.0, one without a regulator, one without a resistor, 2/3 not working from the start, soldering the 1MOhm resistor helped still it died 2-3 days later 🤣 Good products

wow 4 ads on a channel that only has 224 subs something is up with that for sure

thank you for this fix there is still people out there selling these as i order some from eBay and AliExpress and both were 1.2 V same as yours but Im going to fix them now but i bought new ones with V2.0 thanks

I have a BBC computer stashed away in a moving box that I have had since I was a kid. Keep meaning to fire the old girl up and see if she still works.... I leant 6502 programming on it and wrote a Game Of Life program that was something like 1000 times quicker than the BASIC version. Happy days, seems like a different life looking back now, makes me feel quite nostalgic.... Good video by the way 🙂

I have had a lot of grief with these sensors and have bought several from different suppliers, and there's a number of different faults. Here's what I have found: 1) v2.0 is no different to v1.2. The circuit is the same, and they contain the same faults. Don't be fooled by this feeble marketing trick. 2) The resistor R1 is not connected to ground on some sensors, but is on others. Where it's not connected, response is slow as shown in the video. The 1M Ohm resistor solves the problem. 3) Some of them are fitted with the wrong version of the 555 Timer chip (IC2). The supply voltage out of the regulator is either 3.0v or 3.3v, but some sensors are fitted with 555 that needs at least 5v. 4) Some sensors do not have the 3v regulator fitted. Instead, there is a diode, so if you're running off a battery, you'll get incorrect readings as the battery voltage declines. 5) The reading when the sensor is perfectly dry should be close to the supply voltage (in mV) and when immersed in water, should be close to zero. On most sensors that give me relatively sensible results, I get around 2500mV dry and 950mV in water. However, I did have some giving 3700mV. To use them effectively, you'd have to calibrate them and adjust the software accordingly. Unfortunately, most vendors just buy whatever is cheapest, so you don't always get the ones they show in their photographs. It's luck of the draw whether you get a working one or not. I had some arrive that were labelled "Capacltlve Soll Molsture Sensor v2.0". They couldn't even reproduce the label correctly, and they had R1 disconnected so reacted very slowly. Another KZfaqr I follow tested over 30 different sensors from different suppliers and found 82% to be faulty. Buyer beware!

merci pour cette video 👍

Is there a reason why it didn’t get the same result twice when you submerged it the 2nd time once it was repaired?

danke danke

The cables also should get rounded around with the rotation of the sensors. How did you overcome that?

Have you come across the problem with a grow light interfering with a capacitive soil moisture sensor?

Nice catch on the resistor and cap. Sadly, others who have received these sensors in the same condition, may not know how to find out what the value of that cap is. Also, they may not realize that the resistor isn't even connected at one end. The fix is so simple once one knows. In like manner, I use a lot of the DHT22 temperature/humidity sensors. They mostly work well, but sometimes, I've had some that seem to "bounce" a lot. Until recently (in Jan2023) I had never found out why. No seller has this documented, but the fix to stabilize these sensors is.... yup, you guessed it, a resistor! In this case, it's a 10K connected from the 3.3V pin to the Data pin! The sensors work best when connected to 3.3V instead of 5V, as I've also found out. When I first discovered this, it didn't make a lot of sense to me, because to me, this was pulling UP the data line. The data line is "digital" not analogue. But, it works! Since adding this, I find that the sensors don't bounce anymore. I do wish that we had some GOOD manufacturers of all these sensors and devices, rather than the rip-off trash we receive. Oh well...... Now I need to find a good schematic of a circuit to use to make my own capacitive water level sensor. Fun times.

Two years later, they are still selling this crap…

I've got 5 of them ffs lmfao 🤣

What about waterproofing for outdoor use? Does one have to also cover (besides the electronics), the backside of the board terminal connectors?

The video is great! I also have slow sensors with a defect connection to ground. The rest is fine (TL555C ...). I have a new problem: when fixing it with a direct wire from ground to R4 or a 1MOhm or a wire as shown in the video the signal drops quickly to zero, but when the sensor is out of the water and completely dry, the signal does not come back. It stays at zero. What can I do? Do I need a bigger resistor between ground and AOUT?

Very cool, thank you.

kzfaq.info/get/bejne/pqyBlKmf1tazpIU.html here are the correct version with C1 and R1 on pcb. C1 is bypass capacitor of the 3.0V regulator, it should not be big concern for the accuracy. According to the schematic, R1 is in place on pcb. But top end of R1 is not connected to ground due to the copper trace was broken. That is why R1 does not work. Simply solder or jump wire the top end of R1 to GND and it will work great. You set baud at 115200, while others set at 9600. But the reading is still delayed a bit. Do you have any idea to speed the sensor response faster?

HI Stewart really like your radar have been looking into doing some thing like this to go into a 12ft Gato submarine weights about 500LBS did you get any further with it, do you think it would be possiable instead of useing ultra sonics use RF say on 5.8ghz

Yes or you may replace r1 by a 500k

Thank you

Thanks for making this video, very interesting. I have bought some of the V2.0, how can I tell if I have the TLC555 or the NE555? There are no markings to say which one I have. Am I right in saying that if it powers up at 3.3v then I have the TLC555?

Huge thanks, new to all this and have been struggling for week thinking it was something I was doing wrong. Added the resistor and happy days, working and it's responding as fast as all the other project videos online.

Excellent and very useful information. I had the same problem and got frustrated getting it fixed. I build my own circuit and merged it with the probe (I removed all the SMD components). All the version has the same issues.

does this also fix the problem that the measured voltage decreases (eg. from 1.26V to 1.18V) when the sun shines on the sensors ? I want to use them outside but that behaviour makes it a bit more difficult

Great information, thank you!

Thank you for the video. I just received 3 of those sensors and all of them are broken. The traces on the PCB are intact, but it still doesn't work. Do you know any other issues that could cause the sensor to malfunction?

hi, v2.0 is out. Have you checked it and it still has the same problem?

Thank you for this post. Had the same issue with my replacement sensor. The previous one was not working at all. What's this about doing in varnish? Where can I find more info on that?

Thanks for this tip! I had the situation that the sensor was in the ground and would read 0 all the time. Whenever I touched the plant, it would start working. I guess I was the 1M resistor to ground :-)

You saved my project! Hero!

Thank you. It works.

Greetings Sir, Will it still work if I use a 10 k ohm resistor? Thank You

Thanky you, simple fix actually. Save me a lot of time.

great job dude, i'm also working on the same for the past two weeks. but i'm finding it difficult to use the ultrasonic semsor in full range.

What did you cover it with

In another video, you suggested placing a 1 mega ohm resistor between the signal pin and ground. Can you help me understand this? Thank you!

Why is KZfaq recommending me this?

Interesting video. I have the same sensor (still v 1.2). Luckily, the trace was not broken on mine - but take a look at how thin it is! imgur.com/KH7zDGk I have another problem with my sensor, wonder if you have any suggestions: It reacts quickly when going from 'air' to 'glass of water'. However, when stuck in soil (in a pot), as the soil gets drier, the measured value stays roughly constant (over the course of a few days). A resistive sensor in the same pot has a clear slope in its measurements. Is there anything I can do about that?

Very helpful as those sensors are so unreliable as they are. Your simp-e fix cured mine. Thanks. Subbed too.

Update info link doesn't work anymore :-( where did you get that clip to hold the sensor?

It's just more China crap that we in England purchase just bad quality and bad design it is shameful so thank you for the video and fix the old one that used to run on DC and corroded that was shit as well so if anyone sees the old one that looked like a fork don't wast your money I see they are still for sale on Bitsbox Uk so they know that they don't work but are still selling the shit

Very informative. Thanks a lot

THANK YOU!!! 3 of mine had that exact issue! Purchased months apart... 🤯

Recently I bought a soil sensor V1,2 and during testing I found that the sensor responds very slowly. After seeing your fix, I tried to adjust the soil sensor. Only an update has been carried out in China and there is connection already made in the print and C1 is also present. Only the sensor continues to respond slowly. Question: Can you tell me what (approximately) the response values of the sensor should be?

Thank you! You just got yourself a new subscriber.

Our buy the original sensor: www.ramser-elektro.at/shop/bausaetze-und-platinen/giesomat-kapazitiver-bodenfeuchtesensor-erdfeuchtesensor-mit-beschichtung/ NOT the cheap china clone :-D Buy cheap, buy twice :-D