Songhe Capacitive Soil Moisture Sensor Module Corrosion Resistant Moisture Detection Garden Watering for Arduino DIY 3.3~5.5V 5pcs

I was able to do a project with these and they worked really well. I did a lot of research on these and I think there are a lot of versions of this product that have some knockoff parts that don’t actually work, but this one seems to be legit!

Great product. It resists corrosion better than other sensors I’ve used.

Have been using these a while, they work well. I'm concerned that they may die from eventual corrosion over time but after all we are shoving a PCB into spil. So far though they worked well for ESPHome and I get fairly accurate readings. Just measure the voltage at 100% saturation of your soil and also read it "dry" before putting into your plant. Has been working well and I'll probably order these again. Tip to the manufacturer: These would be so much better if you had some mounting holes on them. DIY-ers like myself build enclosures and I could easily attach my ESP32 directly to the soil monitor enclsoure that is 3D Printed. Without mounting holes I have to rely on pure pressure to keep the sensor in place. A couple of M3 holes at the top would be a nice addition. So would some solder points so I didnt have to use the cable but not nearly as important.

The capacitive sensors I got from this listing are great! They can be almost fully submerged in water (not the part at the very top with the wire port and electronic chips) virtually indefinitely. No need to worry about corrosion and the price was fair.

Ordered the 5 pack. Placed them all in the same container and 3 were very accurate with each other and 2 would not read at all. Used moist and dry containers to calibrate them with my esp32 project before sending them to the planters. Bought these on recommendations of other Amazon post.

Ordered these to track my soil moisture in my vegetable garden. I covered one in plasti dip as I had seen a video saying the conformal coating was not the best. The plasti dip was a terrible idea as it threw the tradings way off. I have had the other 4 in the soil for the last month and they are reading perfectly!

These are trash, if you get the boards and the timing chip is NE555 it won’t work. If you get TL555 chip they work great. I had to order 15 to get 3 with the right chip. I ordered the microchip separately and soldered them onto the boards to get the others to work

These types of soil sensors are superior to the resistive type, but manufacturing issues abound. Fortunately these don’t fall into that category. All 5/5 worked for me.

TIENE NE555 Y NO TL555, SUPONGO QUE ES SURTE