So where have you had your best luck purchasing the moisture sensors at?
@Arduino_Proffesional
Ай бұрын
I got mine from berrybase. It has everything right, I checked it. Hope I helped :)
@Humbulla93
Ай бұрын
Get a blumat moisture sensor and enjoy the trouble free action
@Arduino_Proffesional
Ай бұрын
I got mine from berrybase. It still works perfectly after 2 years:)
@torquebiker9959
9 күн бұрын
@@Humbulla93 Stop spamming plz
@erdbeeren3241
2 жыл бұрын
Pretty important information: for those who want a more sensitive moisture sensor, you can bridge the 1MOhm resistor with a 100kOhm one. The default output value changes a bit but the sensor reacts on raindrops for example. Same probably goes if you have the faulty connection.
@robinharris4706
8 ай бұрын
I did some work with soil moisture sensors a while back and agree, resistive are useless. So I tried a capacitive one but got unreliable results and moved on to other projects. After watching your video and the excellent research behind it, I checked my probe. Yes it has the missing resistor connection! Now I now why it didn't do the job and am about to go and fix it. This opens up an old project - thank you 🙂
@ThePhaaze
Жыл бұрын
JACKPOT: I've hit all 3 problems with the first ordered sensor! The fix i'm going for: Throw it in the garbage, order a new one. Thanks for the video.
@Humbulla93
Ай бұрын
Get a blumat moisture sensor it's better in all aspects and most accurate
@leosbagoftricks3732
2 жыл бұрын
Maybe it's time to design a better one? These things are terrible designs in the first place, the output voltage is very high impedance, a load placed on the output will change the reading- a sloppy, lazy design.
@Funky3Player
3 жыл бұрын
Just a heads up if you already have a resistive moisture sensor. You can just pulse it's power on each measurement with a transistor/digital pin and prolong its life substentially. I've had mine running for over two months with no sign of dissolvement.
@m.sierra5258
2 жыл бұрын
Also, powering it with ac would probably help
@eaglehigh-h3e
Жыл бұрын
Do you know links showing how to modify it?
@SetTheCurve
Жыл бұрын
Pretty sure that Ecowitt sensor must do this because they stay accurate for years and the single AS battery seems to last about a year, even though it’s also powering a radio.
@imbass8151
Жыл бұрын
bingo!
@moeburn
Жыл бұрын
Measure your sensor with alternating current - turn one pin high and the other low, then next measurement, reverse the two pins.
@chrislanier884
2 жыл бұрын
was kinda hoping you would point out reliable sources
@kumd
2 жыл бұрын
Extremally helpful! So glad I saw this before ordering. I can't thank you enough for devoting so much time and money to make this video. It's truly appreciated.
@claudiodyus211
9 ай бұрын
I saw it afterwards only to find out how lucky I was with the one I got xD
@ing.michalbaska
2 жыл бұрын
Why do you pointing at R1 in schematic and meassure on R4 on board ???
@minime9400
Жыл бұрын
A power saving tip: If the sensors power usage is within your MCUs IO pins power output, connect Vcc to a IO pin, turn it on (with possibly a delay), do the measurement and the turn it off. For my sensor I use a delay of 350 ms from power on to read, otherwise the sensor won't stabilize and the reading will be off. This will of course vary, you have to try it out for yourself.
@JensJackowski
4 ай бұрын
this is verry importent. but not only for power saving - all corrotion needs power to take place and by doing what you suggest you will enhance the useagetime of your sensor.
@jim5148
Жыл бұрын
I got lucky. A few months ago I bought a bag of these and they are labeled v2.0 / HW-390, and they have the 3 terminal regulator and the TL555 chip. Despite having the via at the lower position as shown as the Faulty board at the 8:00 minute mark, the 1 Meg Ohm resistor indeed appears across pins 1 and 3 on the connector. I didn't scrape off the solder mask to see how they made the connection, but they did somehow. Thankfully the one I tested provides stable readings from ~200 submerged, to ~515 dry. It also works on 3.3 VDC, providing the same readings as when powered from 5 VDC. Thanks for the good video!
@christianvogel6354
7 ай бұрын
My second question: In your repair instruction you solder a bridge from R4 to GND. Why? In the wiring diagram the connection is missing between R1 and GND. Or am I wrong?
@tonumeister
3 жыл бұрын
hmm...wanted to be ready for everything,but now I have moisture sensor with all of the flaws :D:D:D
@FlauraSmartPlantPot
3 жыл бұрын
oh no ... sorry to hear that :(
@martinmantelli1663
Жыл бұрын
Hellow, can you share same link to buy a good sensor online? im working on my own project and i taked a bad, thank you.
@coolaboris
Жыл бұрын
Why measure on R4, according to the board, and refeering to R1 in the schematics, regarding no connection to ground?
@familyplans3788
Жыл бұрын
great video thank you and subscribed , i just ordered 10 of these sensors of Amazon and looked at the product page after they arrived, the product page has the wrong boards on it!! After inspecting the sensors when they arrived i found ( to my delight) that they were different !! The ones that arrived had all the right components BUT have the off centre hole , so i did the multi-meter trick you did between ground and the resistor and i got a connection!! I have yet to set one up but fingers crossed it works as expected
@Swisstechguy
9 ай бұрын
Thank you so much! I just got a batch of 10 faulty sensors. R4 is not connected to GND. Remark: in the schematics you are showing the resistor is wrongly labled R1; correct is R4
@sam_fujiyama
2 жыл бұрын
WOW, great video... thank you for the time and effort putting this together. I'm new to these sensors and couldn't understand why many of the reviews mentioned wild variation and unreliable measurements. I also saw the 2.0 version and thought... surely the 2.0 version will be better and fix these issues. Your video answered all these questions. Thanks again.
@PhilR0gers
Жыл бұрын
I have tried following this advice by looking at the pictures of the sensors, but from 3 vendors so far, the sensors that they send have not matched the pictures. For example, I can see that the hole between the resistors is in the correct place, but when they arrive, the holes are in the wrong place, so it's a bit of a lottery when you order them. I even had some arrive that were labelled "Capacltlve Soll Molsture Sensor v2.0".
@drstefankrank
Жыл бұрын
Just don't rely on product pictures. They display a TLC555 with regulator and send a NE555 without. After these lessons learned, I modified my soil sensor to have a 5V boost converter to power the soil sensor.
@tinkerman5220
Жыл бұрын
Check out the DFROBOT version. Mine from 1 year ago has all the right parts, and I measured continuity from two 800k resistors sitting right next to ground. I believe it is a high quality sensor.
@pwaggie
Жыл бұрын
Great Video and I use these all the time, I am a little confused why the 1M resistor on the circuit diagram is marked as R1 and R4 on the circuit board?
@RND-USA
21 күн бұрын
Oh no! Mine just came in the mail. Voltage regulator ✅, TL chip ✅, hole in correct place ❌😕 Thanks for all the thorough testing in this video. Now at least I won’t drive myself crazy wondering what’s wrong.
@GRBtutorials
Жыл бұрын
The LDO could be a problem if you plan to power it from 3.3V, though. If you're using a 3.3V MCU, the one without LDO might actually be a better choice (assuming you're aware of it and use an external regulator).
@robhein
2 жыл бұрын
Now there are so many faulty, what is your favorite sensor? Can u share a link :)
@Diranar851
3 жыл бұрын
Thanks for pointing that out, got three of the 2.0 Models, with 555c and Voltage Regulator but it has the wrong Punch Hole. I was wondering why they were so slow and never used them, now i will ad a little Cable and they will work fine. :)
@goku445
2 жыл бұрын
same here. Seems common on 2.0 but the fix is pretty easy.
@LVHeitor
Ай бұрын
Outstanding expanation about moister sensor tricks that I was never imagine to find... Tks
@medienmond
Жыл бұрын
V1.2, 662k, Ne555 21K, resistance 100Ohm Have not used it in Project because it was to slow to recognize differences. I think, i tried it with 5V.
@eyebinker
3 жыл бұрын
I get that the quality may change and you don't want a bunch of upset people, but it would be nice if you gave a list of your preferred suppliers.
@DejanGjorgjevikj
3 жыл бұрын
Great job. Nice that you have shared your findings with the rest of us. I have checked my 4 sensors and found out that they all have a LDO, and a proper timer circuit (3x TL555, 1x ICM7555) two of them have the via punch hole aside the resistors, but only one of them has the problem of the resistor not being connected to GND. I investigated the PCB further and have found out the actual position of the via hole (that actually takes the signal from the other side of the resistor to the other side of the board where it is routed to the AOUT connector) is not directly the problem, but rather the very tiny lead on the PCB (or the absence of it) that goes under the mentioned via very close to the bard edge that is missing on one of the boards.
@FlauraSmartPlantPot
3 жыл бұрын
great job too! thanks for your effort and pointing that out. Maybe you can share with us where you ordered the good ones, as many people (including me) struggle to find a good source.
@DejanGjorgjevikj
3 жыл бұрын
Photo with the the difference in the PCB that causes the missing GND track. drive.google.com/file/d/1-E5Wk0oXwc_SqPuffyOVGcj7iQuNeSLt/view?usp=sharing
@AtlantaTerry
Жыл бұрын
What is a "bard edge"?
@roguesecurity
3 жыл бұрын
Really appreciate the effort which you have put in creating this video. Thanks for sharing this.
@pXnEmerica
Жыл бұрын
You also want to encapsulate at least the electronics on the top bit, if it's near moisture your values will goto shit or it'll crap out as the moisture and gunk builds up between all the smd stuff.
@aurimassiaulys5652
2 жыл бұрын
But if you find good sensor can you plase share link to shop?
@simonandrews9629
Жыл бұрын
Brilliant, thanks so much for laying this out. Provided HUGE insight to explain why my project is failing with these sensors.
@charlesmorrice
Жыл бұрын
Thanks for this really helpful post. I purchased 11 of these things, 5 from one supplier and 6 from another. I got none of them to work using the 3.3v power supply from my arduino. I picked up the resistor issue from other posts, which also recommended the fix you mention, but it didn’t help when tried on one of my devices. Following you list I found that 10/11 had the missing regulator answering timer issue as well as the incorrectly position wire hole. One ( the only one marked v2.0) appears to have the voltage regulator and correct chip, but still has the hole in the wrong position. Maybe I can get this one to work! Do you see any hope for the others if I power them with fixed 4.5v or so (my projects are not battery driven, so this could’ve done.
@RubenKelevra
Жыл бұрын
8:16 I got 4 sensors which has the hole in exactly this place, but the ground connection is fine. :)
@szjoin992
Жыл бұрын
Thank you sooo much for this video! I thought I had two 'ok' sensors. Turned out that the resistor was not connected and therefore the sensors were very unresponsive, as I already noticed during my project (but taken for granted). Now I was able to fix it. Without you 'I'd never have known this and my projects would be flawed forever! THANKS!👍
@christoffer5345
2 жыл бұрын
I just spent 3 hours troubleshooting why the sensor did not work with my 3,3V Arduino mini battery setup. It did have the NE555 component and was not working on 3,3V. Thanks for making this video! I would have spent days troubleshooting this!
@chaoticsparrow3581
2 жыл бұрын
Hello, i tried using the 5V of the arduino board and still can't make it work, how did you make it work?
@subratasaha1312
2 жыл бұрын
A very detailed and easy to follow video, highlighting the flaws on the sensors was invaluable, thank you for your time and effort I really do appreciate it.
@lyrag6376
Жыл бұрын
The main problem I've noticed with these types of probe-style moisture sensors is that they lose accuracy with time as the soil compacts around them and water channels along their surfaces, artificially lowering moisture readings as the damp soil is further from the electrodes. Your implementation with the probe being inserted through the bottom of the soil looks like it would solve some of those problems, but you want the moisture reading of the shallowest soil, which doesn't necessarily correlate with that of the deepest soil. I've designed a few resistive fluid conductivity sensors using cheapo platinum-coated EC probes, which can be driven with AC to reduce polarization and can pretty easily be integrated into microcontroller projects, but the problem of ensuring consistent soil contact still stands...
@jhonatancock2302
9 ай бұрын
What about surrounding the sensor by some media that wets but don't compact much, some sort of "ideal soil" . I'll start by testing things like porous wood, sponge type material or even solid cardboard.
@SmoothSkySailin
2 жыл бұрын
The world needs more people like you! Thanks so much!
@3333927
Жыл бұрын
Ich kaufte den originalen "Giesomat" von Ramser Elektrotechnik und die funktionieren einwandfrei mit dem Raspberry.
@yerkoc37
2 жыл бұрын
Amanzing video thanks you 👇❤️🔥
@rodcoles
6 ай бұрын
So i just bought 25 of them from AliExpress, of course they do not work. I found that the TL555 chip was in the wrong way, so I had to remove and resolder, i then found thanks to your video a problem with R4 and C4, in my case it was the return to analog reading pin (yellow wire) that the via had broken, i scraped back a bit of the solder mask and bridged it with solder. Now it's all working, but that's a lot of work to do on 25 sensors!! I appreciate your help, I don't think I would have found by myself!
@davideyt1242
Жыл бұрын
very nice! thank you for this video, there are a lot of DIYers in this sphere who probably do not have the technical knowledge that you have, and would have never figure out why their sensors fail to function under pretty normal conditions, thank to this information video they now can see if they have a faulty sensor - hopefully maybe some of the manufacturers of those sensors will also figure out that saving 20 cents is not worth losing thousands of unit sales. I'd also assume that the customer will rather pay an extra 50-60 cents and get a proper sensor with the proper timer chip and no missing voltage regulator or resister connection
@wileymarm0t
2 ай бұрын
Thank you for making this video. Not surprising, these capacitive soil moisture sensors are still being sold with the same problems you mention in this video.
@khatdubell
2 жыл бұрын
I'm curious. when you're talking about the missing resistor connection. On the schematic, you're pointing at R1 But on the board, you're testing R4 Are they supposed to match up with the schematics? Did you just highlight the wrong area of the schematics?
@youpattube1
2 жыл бұрын
He tests the 105R smd resistor.
@jeanyvesdionne183
Жыл бұрын
R1 on the board is actually a 10K ohm resistor as labelled ''103'' and R4 is the 1 mg ohm resistor (labelled 105 ) THEREFORE THE FIX PROPOSED IS CORRECT but the diagram miss labelled. R4 corresponds to R1 (1Meg Ohm) and R1(10K Ohm) is labelled R2 on the diagram
@surferdudemi
Жыл бұрын
I have a batch of the 2.0 version that looks like the pad near the 1M resistor is offset, but I get 1M almost exactly between GND and the sensor output. I've coated them with nail polish to seal the PCB from moisture, so I cannot check the resistor directly, but the resistor leg is connected directly to the output pin according to the schematic.
@DimebagPantera
Жыл бұрын
Great video! In my (very limited) experience this problem occurs with a lot of sensors, not only soil humidity but also temperature, air humidity and more.
@jrippon
8 ай бұрын
Fwiw, I recently (Jan 2024) bought a v1.2 and it works fine at 3.3v and 5v (the range the manufacturer specified). The LDO is replaced with a 0ohn resistor and the timer chip is labelled NE555. I realise 3.3v supply is well out-of-spec for an NE555 but, in fact, many of them have been found to work pretty reliably at 2.5v. Certainly reliably enough for this application.
@ematejowsky
Жыл бұрын
Thanx. All my sensors have needed a resistor - I used 15K. I also have a temperature co-efficient of around -0.2% per Deg C. I've started to uses 24Hrs averages and water twice a day.
@DaxterPSP
2 жыл бұрын
Unglaublich tolles Projekt. Ich freue mich schon auf den nächsten Teil. Weiter so!
@asarilkima
Жыл бұрын
Thank you for gathering all that information and sharing it! I just checked my sensors (got 2*6 just today), and found a whole bunch of random samples o.O I got v2.0 which do have the correct regulator, the TLC555I and the disconnected copper trace, but also have two additional vias between the VCC and AUOT [sic] labels, which connect the ground plane in the lower right corner to the GND pin on the bottom side. This means the 1M resistor is connected and working. Mine have a date printed in the area that was scratched off in the video, "20210603". However, I just noticed I got a bunch of random samples in that one delivery, some having a date of 20190515 and those do NOT have the additional vias and are faulty. out of the 2 bags with 6 each, one bag had 3/3, and one had 4 good ones and 2 faulty... so ordering in bulk does not guarantee working sensors. The difference is even visible in the raw voltages, with all good sensors outputting almost the same voltage in air, and the faulty ones also close together, but on a slightly higher voltage. So if someone has two groups in their data when the sensors are just hanging in air, that can also be a sign to go check. And one additional quality issue: One of the supposedly good ones read a constant 0V. That one does not have a regulator at all. Looks like it was soldered but broke off.
@kwjuga
Жыл бұрын
Same here. Got the v2.0 with date 20190515 and missing the resistor ground connection.
@bid0u12345
10 ай бұрын
Oh, I just wrote the same regarding the V2.0 sensor from 03/06/2021 but without the technical explanation. Yes the hole is misplaced but it's working just fine, so they fixed the issue in the end. This hole place is not relevant anymore. I got lucky, bought a bulk of 8 in August 2023 and all of them are from 03/06/2021. 🤞
@mackenzeighfisher5835
2 жыл бұрын
Great video! For those of you that wanna know more about the topic there's a good overview of various soil moisture sensors in elektor magazine that was just recently uploaded. It's called 'Moisture Sensors for Watering Systems' by Peter Tschulik and is pretty instructive
@mischavandenburg
Жыл бұрын
Thank you, this was a really good tip!
@JensJackowski
4 ай бұрын
i think it is important to understand that most of the sensors have corration problems when you try to read them. If you just put them in the soil and do not have any power on them they are much more stable to use. The main problem is that most people try to read the soil- moisture more or less all the time or every minute - but their is no need for that. 3 or 4 readings a day are more than enough. And the other problem is that many people did not understand that soil is reacting verry slowly. If is a verry bad idear to try watering a plant and use a soil sensor to stop the watering. It takes time for the water to spread in the soil. So what you should do is starting the watering if your reading shows a value that make it nessesary and stop it after a reasonable amount of time. After one hour or so you can do another reading and start a new cirkel if this i nessecary - and you do not have to read all the time. It took me a long time to understand the importence of this point. Its mabybe more important if you are watering a bigger amount of soil than just a plantpott, but basicly it is the same. The water needs time to spread in the soil. I have a bunch of devices that i have build several years ago with those sensors that you describe som just crab. Yes in the beginning i needed to replace them after a few weeks. But since i changed the reading metod and just do a reading every 6 hours are they working without problems since 3 seasons and up till now the do not show any sign of corrotion.
@p_peja
Жыл бұрын
Hi, you could make DIY sensor probe (just a PCB with "capacitor trace" and probe without any electronic parts except connector). The two resistors, diode and capacitor you could placed at your adapter board. NE555 square signal could be generated from ESP.
@fhx1274
Жыл бұрын
Bought 5 sensors a couple of years back and they have the regulator and a TLC555I, but the resistor is not connected with the same via issue you showed. I'm going to fix them all with a small bit of cable to connect the existing resistor to GND. Thanks a lot for your video, you saved me a lot of time and frustration !
@eugenvilin
Жыл бұрын
Thanks a lot for the video! Half of my sensors didn't had connection of 1M resistor. What I've also noticed: there are good modules having "that via" not between R4 and C4, but near them same as bad ones.. BUT there are additional vias (near the socket and 555) on the board that connect R4 with GND. It looks to be a "fixed" version.
@tyeth
Жыл бұрын
Bought about 30 v2's for $0.50 each from aliexpress some years ago, but always questionable results, thank you so much for explaining the issues. v2.0's with the via interrupting the ground track. Maybe worth the quick wire fix... The real problem I found was corrosion of the connector/powerlines/circuitry (not submerged just greenhouse/atmospheric condensation). Maybe some conformal / waterproof (plastidip?) coating would be wise, I always thought the lack of sealing of the pcb sidewalls was also an error long-term.
@johncrunk8038
2 жыл бұрын
Very frustrating. I bought a couple dozen of the ones with the missing resistor connection. Although soldering a resistor or jumper is just annoying, that was good money down a hole. Thanks for the fix.
@shahnewajx
2 жыл бұрын
I bought 50 of this sensors. Didn't know what's the problem. I was looking for video like this for 2 years. I can find only one video which shows 1m resistor problem from "Stewart Cash" . But this one is epic.
@NaoMeChates22222
2 жыл бұрын
Mine had a 3.3V regulator feeding a NE555 and missing the Resistance connection. The result I could see was a voltage signal slowly dropping to 0. I cut the connection between the 3.3V regulator and shorted the NE555 to the 5V from Vcc (using 5V out from Arduino). Now at least I get what it seems like a output proportional to how dee in water the sensor is. I will add the resistor later and try to solder everything properly today. Let's see if it works!
@planker
8 ай бұрын
Well presented. Good solid information, I have a few on order. My first time with such a sensor and did all the work to receive it and apply it to my build. Had I NOT known about the 3 problems, I would have blown a gasket. Thank you.
@youpattube1
2 жыл бұрын
Thank you for this detailed video. I followed your advice and ordered 3 different ones on ebay. But forget reading the chip number, or spotting a tiny hole (at least in the images i had to look at). Still, i did my best and we'll see.
@spcutler
24 күн бұрын
Thank you! Sensors I got just a couple of weeks ago *still* have the output resistor problem. You just saved me hours of debugging. A bodge-wire later and the sensors work perfectly.
@ultrafilipsz.5827
2 жыл бұрын
What a great video of investgative journalism in electronics field, what a story!
@nicolaschollet7435
3 жыл бұрын
Amazing work and very useful
@ContentsOfTable
3 ай бұрын
Elecrow has their slightly different version of the capacitive soil moisture sensor labeled as "Crowtail - Capacitive Moisture V2.0". Their sensor has a 6620 voltage regulator. It also has a timer chip labeled "XINLUDA XL7555 23+7". The via hole is located to the side of the resistor so likely a problem there, but I haven't actually powered this sensor up and used yet to confirm if it can work on battery and/or if it will be responsive or grossly laggy.
@moeburn
3 ай бұрын
What about using the ESP32's "touch" pins, and a bare insulated wire as your capacitive soil moisture sensor?
@pyalot
Жыл бұрын
Bought a bunch of these a while back. - Regulator ✅ - Timer chip ✅ - Resistor connection ❌ 🤯🤬
@digital-economy
4 ай бұрын
thanks to your video I knew how to react to my bad order: Hello, I received your package but the wrong article was inside. It has a NE555 timer chip onboard that does not fulfill the specification of your article description (Operating Voltage: DC 3.3-5.5V). It does not work. Please send the correct items or refund. Best Regards, xx
@robinharris4706
8 ай бұрын
Further to my comment yesterday - I applied the easy fix and it is working perfectly. Brilliant - thank you for sharing the results of your work - you have helped me greatly.
@PeterCruickshank-s8q
Ай бұрын
Very useful info, but how do you calibrate the sensors for 100% wet and 100% dry ?. I have tried taking a measurement when dry ( i.e not in soil) and when submersed in a glass of water, but this just does not seem right to me. Obtaining samples of completely dry soil and completely saturated soil to use for calibration would be very difficult ??
@adrian30497
23 күн бұрын
Super Video i wonder Always why i have such Problems with this now i have the explanation
@Sysshad
6 ай бұрын
A good idea to further save battery, is to have MOSFET controlled by the MCU to turn off the voltage to the sensor. Otherwise it will draw some power even when not used.
@Colololp
2 ай бұрын
Wow very Helpful Thank you. You saved me years of Troubleshooting 🙏🏻
@bid0u12345
10 ай бұрын
Just the fact that they wrote AUOT instead of AOUT on the sensor says a lot... But still, I have the exact same V2.0 sensor manufactured on the 03/06/2021, misplaced wire hole, cut-off circuit where the hole is (this is clearly visible because of the embossing), and still, my multimeter bips when I try the ground to R4 connection. So it has been fixed since, but another way since it still looks the same but is now working just fine. So guys, don't rely only on this little wire hole place and do test your sensor.
@Embeded_Geek
Жыл бұрын
I just got my sensor from a local shop and they had the V2.0. Measured the connections from 1k resistor to GND and it was connected. might be because below the 1k resistor silk screen showed 20210603. yours showed 20190515, maybe they updated the sensor?
@felixgp
4 ай бұрын
Received 2 "Capa"i"tive Soil Moisture Sensor v1.2" sic. with a NE555 33k wich works with 5v and 3.3
@jimliu7028
5 ай бұрын
Thank you for your video. I recently purchased this moisture sensor as well and encountered the same issue of the missing resistor connection mentioned in your video. However, I decided to test it using an oscilloscope and was surprised to find that it did not exhibit the slow response symptoms shown in the video you referenced (QGCrtXf8YSs). On the contrary, it appeared to respond quickly. I recorded a video to demonstrate this(kzitem.info/news/bejne/z4SGqo19boZ-dKw). Furthermore, I followed your method of fixing the broken 1M resistor connection. Upon retesting, I found that the results were consistent with the previous ones, showing a same rapid response to changes in soil moisture levels.
@Clayne151
3 ай бұрын
I bought m5stack watering units, these include capacitive sensors (they can be separated from the unit, they are just plugged together with pin headers). The pcb design on these is different than those in this video but the components are the same. The timer chip and voltage regulator are there, because of the different design i did not find the resistance.. but since the pcb is different its unlikely they have that connection problem. They do work, but I get a ton of noise on the signal. I put a rolling average over them, but still the signal likes to walk down and up about 10% (after calibrating 0% and 100% with air/water). I don't know if that is normal 🤔
@thekitsunedev_hun
Жыл бұрын
Great! Thank you so much for pointing out these faults! It's a headache what some manufacturers do to save a few cents.
@gleggett3817
Жыл бұрын
Well the one I just bought for a couple of £ is marked "Capacltlve Soll Molsture Sensor" so there's a quality issue for a start ( The output is also marked AUOT rather than AOUT) I can't pick up 1M resistance between output and gnd so looks like one of the poor ones.
@danielblair1916
7 ай бұрын
Wondering if you’ve had experience with Pino Tech SoilWatch 10?
@youpattube1
2 жыл бұрын
Here it is 2 weeks later and I have received, inspected and tested all 3 sensors that i ordered from ebay. I ordered the ones that seemed to have the right components, based on the images and descriptions. They were not the cheap ones. each cost $5-$6. all were marked v1.2. But they all worked fine. each had the correct voltage regulator. one had a 555 20 M. one a 555C & one a 555G. all had a good connection from the 1Mohm grd. to grd. I used the arduino example AnalogReadSerial, just changing the delay to 500 msec. all showed about 500 dry and immediately changed when put into a cup of water. two went down to 200, and the other to about 300. I dried them all, and then applied clear finger nail protector to the edges. the three ebay sellers were, ENVISTIA, KINGELECTRONICS15, CAELECTRONICS8.
@SHOWSentretenimento
9 ай бұрын
Hi there. Very good video. I'm impressed with your flaura vase. Pretty cool. Can you tell your opinion on the sonoff TH10 soil humidity sensor?
@AndrewChildsza
11 ай бұрын
I've got a v1.2 capacitive sensor that has an NE555 with 93M on it and it does not work with my ESP32. Assuming its the 3.3v issue mostly, but it also looks like it has the resistor issue too...
@domints
4 ай бұрын
I have nearly all 3 of the problems, except for me the via is offset, but there is tiny trace to the ground :) Still going to use it, just circumvent the problems by using regulated 5V source ;)
@notmyname9062
Жыл бұрын
My sensors do have 1. no voltage regulator, but i used them with a constant supply 2. NE555 not working with
@WoLpH
3 жыл бұрын
I've got several of the v1.2 ones and while I have not tested them... I'm guessing they are indeed broken :P
@PokemonTrainerAriel
5 ай бұрын
Just wanted to report that they're still garbage. 5/5 of Songhe's sensor didn't work even after bridging the missing connection.
@jrooliefer2792
Ай бұрын
thank you for this video.. i am also expermenting with similar project and was at first stupid to buy the two prong ones.. now I am looking for good ones.. you sound "german"? i am trying to source from berrybase or botland but form their product photos its hard to identify if they are good ones or not lol.. do you have a recomendable vendor in the eu?
@Citrumoothy
5 ай бұрын
I bought a V2.0. Sadly while working in short circuted my circuit and I could not finish it. I think all the components are damaged. In your video I found out the the wire hole was now in between on mine. Where can I find good ones?
@hughweld9561
2 жыл бұрын
Thanks for this video. I purchased 6 sensors and ALL have all the faults mentioned in your video.
@tinahinojosa9326
4 ай бұрын
I have one with a NE555 21k. The data sheet says that the minimum supply is 4.5v, but it works the same on 5v and 3.3v pins.
@FlapD
4 ай бұрын
Can't believe it. I failed my final high school biology project because of these sensors.
@marcus_w0
7 ай бұрын
Nobody should ever supply anything without a voltage regulator. Most µC-Boards have one built in and provide the output on a pin. This is why.
@5L4P5T1CK
4 ай бұрын
Mate - the point with the missing voltage regulator is just not true. The way these regulators should work, is that you use the actual supply voltage in your algorythm anyhow - and in case of using a battery, you should be monitoring the supply voltage on the mcu anyhow using an analog pin...
@fog1257
Жыл бұрын
How much longer is it possible to make the resistive sensors last by turning them off with a transistor while not in use? Measuring twice a day for only 20-30 seconds should be okay. That is 1 minute of electrolysis instead of 24 hours.
@didakad4207
Жыл бұрын
I basically YOLO-ed it and ordered one and got the shittiest one. Basically everything he talks about that can go wrong is wrong with it. I will try to go around the issues or order another one.
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