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

I have found these to be good quality with accurate measurements. I like that they provide the cables with them. HiLetgo seems to be produce reliable hardware at a competitive price. Like all DHTnn modules you need to use care because of the way they are designed.

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.

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!!! 😈👍👍💪

These work great. Only 3 wire saves a conductor. Easy to use, nice that they come with short cables to use during development. Arduino library makes interfacing easy.

Picture shows a Grafana plot of three of them running within a few feet of each other over the course of about 50 minutes. I don't know how good the absolute accuracy is, but they seem very consistent. Dewpoint is calculated from humidity and temperature according to the Magnus formula. The sensor appears to be an AM2302. BE VERY CAREFUL swapping devices from different manufacturers. If you hold them with the sensor packages facing you and the pins down, some are + OUT - (or VCC OUT GND) and some are - OUT + (or GND OUT VCC).

I have been using these with ESP32 boards for a home automation project and they work fine.

Work will with my Raspberry pi 4

Item highly recommended I brought this item for my friend as he wanted something that he could control the temp and the humidity of a enclosure for his pet snake, so I built this that controls the heating Matt and the water level so it stays constant

Eccellenti sensori. Utili per trasformare un SONOFF Basic in un regolatore di temperatura/umidità utilizzando il firmware Tasmota.

تاخر جدا

Pour ce qui est de l’an doc il y a une sérigraphie sur la carte qui permet de connecter + out - . Les valeurs lu,sont conformes La fixation via le trou du capteur suffit.

tout ça pour un rapport prix/vitesse de livraison très acceptable, soit 4 jours.