CQRobot Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Solution, Agriculture, Gardening, etc.

My Christmas tree savior. I used this to monitor the water level in my Christmas tree. It worked perfect. My previous sensor got all gummed up and had calcium deposits on it, this worked flawlessly and came out clean at the end of the season. It took a little effort to get the ESPHome device to interpret the frequency signal but that was mostly my learning effort....it was only a few lines of code. You end up with 4 distinct levels which is perfect for my use case. Sensor board + ESP device fit into basically an Altoids tin.

So Far these are doing a great job. Finding a good mounting point was problematic. These can detect water through some pretty thick walls, but it isn't very consistent when reading a PVC Pipe. I'm using this product to measure when water is present in the drain pipe so it can turn on the pump. I had to create a "clean-out" port and attach the sensor to the plug. It works, but allows water to build up before switching on the pump and turns off too early. So I let it trigger, then pump for additional time to let it get empty.

Super easy to install and set up. Works perfectly for detecting liquid levels without any contact, and it’s compatible with Arduino and Raspberry Pi just as advertised. Does exactly what it’s supposed to—great little sensor for projects.

Looks Nice but I haven’t assembled it yet so I’m not sure if it even works.

Si, el producto cumple con lo esperado

Does just what I expected. Thanks to some free Python code available online which I modified to my needs, I had this hooked to my old pi1b above my sump pump emaling me if the water level reaches the sensor before I even thought to check the time, so, it took, like, minutes from unboxing to deployment! Will buy again!

Works great. I'm using it to sense the level for a black tank on a sailboat. Mounted it about 1/4 from top and know get an a LED signal when the tank is about 3/4 full.

Works great using my Reef Pi, and a good choice if you cant drill into your container for the optical switch. Plug and play and for those interested I'm using Pin 18. Mine did come with a cable going from the 3 pin board connector to three single Female Dupont connectors to be able to plug onto the pin outs of the raspberry pi/breakout board. Pi recognized it instantly as an input. The board that comes with the sensor has two switches, one is a "set" that reverses the polarity, the other selects the voltage 3V & 5V, i have mine set 3.3V for the output to the Pi GIPO. Supply power to the sensor is still 5V regardless of the switch position. The only issue i saw was there is no adjustment screw for sensitivity, as can be seen in the picture of the installed sensor, . I did have to make sure the glass was clean on the inside of the tank, also using the 3M adhesive strip moved it off of the glass which helped with a false trigger. There is a little bit of a sweet spot when it comes to distance from the glass. After that sweet spot was found, as seen in the second picture, the screen shot from my Reef Pi shows it working normally. The distance not not an issue when i placed it on my plastic ATO bucket. Side note, it also worked on my ceramic coffee mug when i was bench testing it. I will probably get a few more as i expand my setup, the fact that these can be placed externally is extremely useful.

Le capteur à été utilisé avec un mcu pour contrôler le niveau de remplissage d’eau d’un réservoir d’un système et le vidanger lorsqu’il est plein. Le problème est que lorsqu’une goutte d’eau éclabousse au hasard la lentille du capteur, ce dernier s’active alors de manière erronée tant et aussi longtemps que la goutte persiste sur cette dernière. Dans ma situation, cela occasionnait une vidange erronée du réservoir. J’ai dû opter pour un autre type de capteur (capacitif) afin de palier à la situation…

Ces capteurs fonctionne hyper bien il me permettent de remplir et de contrôler le niveau d'un réservoir avec un Arduino

Works very well and exactly as advertised— which, for some reason, appears to be quite a feat in this day and age…

Este sensor capacitivo de nivel de agua sin contacto me ha parecido una opción muy interesante para proyectos de automatización. En mi caso, lo voy a utilizar para controlar el nivel del depósito que uso para el riego de plantas, y aunque aún no lo he puesto en funcionamiento, la calidad del componente y su compatibilidad con placas como Arduino o Raspberry Pi inspiran confianza. La idea de medir el nivel sin tener que sumergir nada en el líquido es un gran punto a favor, especialmente para evitar mantenimiento y problemas de corrosión. En general, tiene muy buena pinta y promete ser una solución práctica y segura para sistemas de control de nivel en distintos entornos.

I received this water level detector for free through Amazon Vine in exchange for an honest and unbiased review. This is a PCB with a water level sensor designed for use in embedded projects. The PCB has two switches that are not well documented: one switches the signal line between active-high and active-low, and the other allows the board to be powered at either 3.3 V or 5 V. It’s very basic — you either get a signal when water is present or you don’t. On the detection module there is a tiny adjustment screw, and after a few minor tweaks I was able to detect the water level in my plastic water jug. It won’t activate on metal, and if you touch it, it will trigger on your finger. A red LED on the detector shows when it has detected water, which is helpful during setup. Ideally, the detector pad needs to make contact with the side of whatever you are detecting. The pad is flexible and can be glued or zip-tied in place. The signal wire would typically be connected to a GPIO pin on an embedded device, but when powered at 3.3 V I found that this line only reached about 2 V. This is probably acceptable for most applications, but it should be considered when designing something that uses this detector. That said, it works well through glass or plastic and was perfect for measuring how much water is in my water butts in the garden.