HiLetgo2pcs DHT22/AM2302 Digital Temperature And Humidity Sensor Module Temperature Humidity Monitor Sensor Replace SHT11 SHT15 for Arduino Electronic Practice DIY

I ended up buying two different temp / humidity sensors on Amazon. The first one, a sensor sold by WWZMDiB on Amazon (the one on the left in the picture) worked out fine for my ESP 8266 project, but the humidity readings seemed to be about 5% off compared to my "Airthings" radon/humidity/temp readings. The HiLetgo DHT22 in contrast gave me readings that exactly matched my "Airthings" and another table top temp / humidity device. I don't have any way to prove which one was right other than thinking if 3 devices agree, I have a better chance of being close to the actual value.You can see in the picture that the HiLetgo is just neater. The plastic enclosure around the sensor just looks crisp on the HiLetgo, but not quite as good on the other. Solder joints were just a tad cleaner on the HiLetgo. The HiLetgo was about twice the price, but I think it is worth paying a little more for a sensor that I am more confident in using. Both units came with hookup wire which made connecting them to the ESP 8266 a breeze. Both claim the same specs on accuracy. The "WWZMDiB" was cheaper and performed okay, just seemed to be a step down from the HiLetgo.

I'm a little new to the world of ESP and this was my first attempt to add something to my Atom Lites. But boy was it easy. I connected 3 Dupont wires from this to 5V, GND, and a GPIO pin on the Atom and was off to the races. Just added a handful of lines of YAML to ESPHome on Home Assistant and the sensors were created. Literally a 5 minute thing, plug and play - no resistor.In terms of accuracy, I have this and a Govee BLE an inch apart on my desk for a few hours and the Govee says 70.9 F and this is putting out 70.9 F. Govee humidity is 38% and this is 39%. If they aren't accurate, well they are identically inaccurate - and I think that is unlikely.Certainly you can find alternatives for a few dollars less, but I wanted no fussing and this delivered.

Have this sensor running with a raspberry pi 5. I find the values are within 1-2% in temperature and humidity compared with the values from my aranet4, I'm actually impressed.The python software available online to interface with the device is easy to use. Haven't had issues with it so far.

Description calls it DHT11 but title calls it a 22 but it's actually an asair AM3202 🤷🏻‍♂️🤷🏻‍♂️🤷🏻‍♂️🥴Furthermore... PCB images from seller depict a 10K smd resistor but the schematic shows a 4.7k.. so which it's it? SMD lottery gave me a 4.7K did I win? 🤷🏻‍♂️🤷🏻‍♂️ Idk is it important? Yes, specifications are important because buyer's application will be very specific to their needs, and the resistor variance may require additional resistance depending on microprocessor and the miles and miles of sensor wire someone might use 😂.It does work tho, with Arduino DHT library but that's all I can tell you. It worked with my boards (node MCU & Arduino uno r3) with and without a 10K resistor, You can also attempt using a pull up function if the sensor will be close and if your board is capable and for some reason couldn't read it.There's also voltage confusion, this thing runs on 3-5V (6v you're pushing it) and this is polarity sensitive positive on the (+) and ground on the (-) pin on the sensor. You can power it with 3.3V... no read? Switch to 5V... no read? Power your board via VCC and GND and connect it in parallel to these if you're still having problems reading it change data pin or check code . That last VCC option is what SpongeBob refers to as "maximum powweerrrr!" And will depend on your power supply. On that note (HOTSWAPPERs BEWARE I don't take responsibility for the sparks and french fried smd smell in the back of your throat!)The out pin is the data pin and it goes to any gpio pin that is capable of reading the sensor on your board. (Do your HW)In conclusion: it's pretty good and gave reliable results, definitely more reliable than Rona testing and that works for me 🤔🙆🏻‍♂️, as shown it's slightly more accurate than the DHT11 and fairly close to the actual reading. Only time will tell what the reliability and lifespan of this sensor is.PS: if you dare try my super glue resistor soldering patch and achieve it without melting through the pins and still are able to connect it using jumpers 💀💀💀 I salute to you my fellow soldering enthusiast you're in a different league compared to these breadboard and cheesepin plebs! you've got mad soldering skills!!! 😈👍👍💪

Arrived promptly and work as advertised with my Pi!!

No issues, checked it against a digital thermometer and a home weather station and the sensor is spot on.

Bought this for use in my Flipper Zero. Both worked fine. They take a few minutes to settle down to the temperature & humidity, but I found them to be accurate. Awesome way to get started into the world of GPIO pins & gadgets etc.

I have to rate this as one star because this sensor did not work.This was supposed to be used to control a relay for a small cooling fan with my Arduino Mega, however, the DHT22 was DOA. The plastic shield is so flimsily mounted to the board that I think it could have been damaged in transit (although it was well packaged), or damaged during hook up. I used the correct libraries and testing code, but continually received "DHT22 Not Found" messages. I also ensured my wiring was correct. I would have loved to give this a higher rating, but I had to put the project on hold until I figure out another alternative.