You have to make another circuit?

@@hernanvassallo9902 yes, the circuit is different. I made a pcb for the rods and modified to have 12V supply and few other things.

you all probably dont care at all but does anybody know of a way to log back into an Instagram account?? I was dumb forgot my login password. I would appreciate any assistance you can give me!

@Richard Angelo instablaster :)

@Devin Carl i really appreciate your reply. I found the site through google and I'm in the hacking process atm. Seems to take a while so I will reply here later when my account password hopefully is recovered.

@Devin Carl It did the trick and I finally got access to my account again. I'm so happy! Thank you so much you really help me out!

@Richard Angelo you are welcome :D

also for instability of arduino readings i think averaging readings example for 10 readings will improve stability a lot !

@@bhMaker963 I found that reading multiple channels somehow makes the reading more stable, only reading the channels I used in the code caused random drops, reading more than needed fixed the issue. Discovered after chasing my tail with random glitches even with averaging, which created a time delay that was undesirable. I wrote a program to read all touch pins to test which were stable, to my amazement the glitches went away on the channels that were previously an issue. So now I just include extra touch sensor function calls until I get stable performance on the pins I'm actually using.

Sorry, I don't know the answer. I used the Touch sensor function call of ESP-IDF. You can find more information here: docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/touch_pad.html

Yes, I tested it and it seems working.

If your plastic tank wall is not too thick, it should work. I saw some people using aluminum foil with a glass bottle and it works as well. The reasons that I'm not using Arduino IDE are 1. Reading resolution, Arduino IDE will report reading around 50 counts with my sensor not touching anything compare to ESP-IDF that would read around 700. Thus I will get more resolution in depth-sensing using ESP-IDF. 2. As shown in my video when I plotted Arduino readings, sometimes the reading suddenly becomes zero. I haven't played with Arduino IDE for quite some time, maybe their software gets updated and these issues have been fixed. Thanks for watching the video.

@@kris-.1439 Thank you for the reply. My initial tests reveal the same as yours. Have you posted these findings anywhere?

@@mksmurff Only in my video around 5:16 mentioned why I did not use Arduino IDE.

correction: the 'touch_pad_init()' function needs to be executed each time before reading the cap-value.

just use two-wire isolated electric cable. no need to mess with laminating and soldering. hotglue or otherwise isolate wire ends and be done.

The laminated copper strip that I have in the box still look shinny. But I don't know what would happen if it is submerged in the water for 2 years.

@@kris-.1439 If I go this route instead of using the computer ribbon cable method, I'll have to confirm that no water seeps into the laminate. Perhaps putting silicone along the edges will assure this. In my case, this is for my "humidifier" project. I need something stable to monitor and display the water level in a linear fashion. The HC-SR04 ultrasonic sensor, that I was using has failed... well, the sensor is ok, so the problem is in the wiring or the Arduino board itself. Long story. I hope to get this built shortly. Thanks for your video.

Concentric tubes is precisely how I added level sensing to a gas tank. If it is a fluid that is not a conductor, no insulating layer is needed. This was back in the early '80s, I used a couple of 555 timers and an LM3914 wired to show continuous level rather than just 10 steps. The outer tube is the ground and shields it from outside interference and any parasitic capacitances from the tank or things outside a nonconductive tank. I have done the same with water based fluids, in those cases I coat the tube with epoxy or polyurethane. It is important there be no flaws to allow water through.

You may want to check on this one .. ukposts.info/have/v-deo/e3SooaNnnoektas.html

I put the strips on the outside to test and it works as well, ukposts.info/have/v-deo/mmiHbJeJnImboqc.html

Please check again. I forgot to make it public.

Hi..can you tell me where exactly is the IDF onboarding file, please? I get errors every time I try to run the program. It says the path is not found etc..

Basically it is the depth of water level that ESP32 can read until the touch read becomes saturated. For example the 1 inch width copper tapes will not decrease the touch read after the immersed into the water more than 10 cm, however the 0.5 inch copper tapes, you can immersed much deeper into the water until the ESP32 touch read becomes saturated.

@@kris-.1439 interesting, I'm using almost 2 inches outside of the water and I've full readings. I guess I don't get saturation because I've a larger bag between water and the electrodes

It is hard to say because there are so many factors such as the thickness of aquarium tank and the type of material of the aquarium wall. If wall too thick, ESP32 may not be able to detect the different in capacitive change.

Hi.. I have the same problem.. I see that you have commented three months ago.. could you tell me if you found a solution to the problem ?

I had to comment out the EnableScale in app_main

I'm don't think UNO has touch read pins as ESP32.

C#

Robert, I have not experimented with this aspect, so I don't know. But one thing to know is that the sensor is very sensitive to moisture, so if the people are sweating, it probably will affect the result.

@@kris-.1439 thanks for the tip!

I got the same error when using 5.1.5. You can just comment out line that gave you an error if you can't use ZedGraph 5.1.7. //this.zedGraphControl1.UseExtendedPrintDialog = true;

Thanks very much for the comment. I will try to answer some of your question. When I discover this sensor it is quite new to me too, so I may not have answer for all of your questions. 1. You may try to use very small electrode area to expand the range but you will lose the resolution or you can use multi channels of touch read to achieve this. Let say you have 5 of water level sensors stack them up. 2. I did some experiment to see if the calibration stay the same with tap water, 5% salt water and 7% salt water. To my surprise the calibration doesn't seem to be changed at all. 3. This type of sensor is using capacitive not electro conductivity thus there will be no corrosion from electrolysis. But I don't know how long the will the laminate sheet last. 4. I'm using this sensor with ESP32 which is compatible with Arduino but as in my video the Arduino touch read has some bug. 5. I don't have an answer for this. But I left the sensor run couple days, the reading seem fluctuate little bit but not significant. 6. If you want to try very long wire you may need a wire with very good shield.

@@kris-.1439 What if i use Crystal resin coating on almunium tape instead of lamination ?

@@kris-.1439 you could just have taped the foil to the outside of the bottle ukposts.info/have/v-deo/mmiHbJeJnImboqc.html

Sorry I don't have it.

Asalamu Alykum, please check this ukposts.info/have/v-deo/mmiHbJeJnImboqc.html the code is in the description of the video. InshAllah it helps !