I chose this sensor+breakout-board, because I wanted to buy a "state of the art" device, and I didn't mind to spend a few bucks for it (stress:a FEW, not a few hundred). The availability of the filter cap, which is sold as an extra, was also very important for my decision to buy (read on to find out why). I have managed to to put it to work this week, connected (~4meters FTP cable) to an Arduino+Ethernet shield, in various test runs (over http and MQTT protocol). The stability over time of the sensor's output so far is really impressive. If you keep the sensor in a room with stable conditions, then there is practically no jitter and no ups and downs in the output (temp & hum). If you breathe at it, you can almost watch your breath passing by the sensor in the output! Furthermore, after I had managed to make it work in the software, there was not a single error in the output for hours. So far so good! After I have finished setting up the rest of the hardware and software(which will take me quite some more time) I am going to test the sensor in its intended position, where the environment is rather unfriendly! That is the reason why I chose it in the first place, because according to the sensor's datasheet it is specified to work with fairly high accuracy in these conditions as well. I am very curious how this will work out, and I am planning to update my feedback, after I have finished. I must mention that it took me quite a few trials and errors and some fiddling to make the provided library work. This is most likely because of my programming skills (just above "copy-paste-and-pray-it-works" level). After i have finished programming and error checking, I will probably contact support on this, I just want to be sure first, that I have done everything I could on my behalf. I can definitely say that for residential conditions this breakout board is very well worth its money! Thank you very much ClosedCube and Tindie for making this "high-class" sensor (+accessories) available to us amateurs!
I ordered SHT31-A with SF-2 filter cap. Its a great product. delivery is quick and prompt. I was hoping to receive the sensors with filter cap already mounted, but got them separately. However, the product is working great
I use this module for climate controlling in a greenhouse. It's tiny, easy to install and seems to work fine. I haven't got the chance to compare it with a calibrated instrument, but comparing it with non-lab equipment, it looks quite close. (at least close enough for me :) )I would NOT use it without the special Cap and I strongly advice to read the data-sheets. I used the Analog version instead of the I²C because I had too many problems with long cables, harsh environments etc. A software filter/correction does a good job in this analog setup and there's no need for exotic libraries.
So far, I am a bit disappointed with this sensor, as I am finding with either the ClosedCube Library or the Adafruit Librarys, that the Data is way off: Temperature is about 6 degrees Higher, Humidity runs about 5 to 6 % lower, Pressure runs much lower, as far as Gas, I cannot really say, seems to fluctuate wildly. I compared these reading to the SHT31X and SHT35X sensors that Seem to work well, I also compared this to BME180 /280, for pressure and compare to local airport readings. Also compared to DHT22 sensors, and found these to be more accurate. So Overall Not a good sensor for the price, OR, I got a defective one.....
I purchase the OPT3001 Digital Ambient Light Sensor Breakout for a school project at my university. The seller was quick to respond to my inquiries and the board functioned as intended. I live in the US and the shipping time was barely over a week if I recall correctly. I had some trouble locating the libraries for the board, but I believe this was because of my inexperience in programming for Arduino (what I used the sensor for).
This is a very small break-out board. It works perfectly together with a Raspberry Pi and a custom Allwinner A33 based board. A small minus: schematics are not available. I had no communication with the supplier, so I gave 4 stars for that.
I bought five of the sensors and they are closer in calibration than the specifications indicate. I have been deliberately rough in handling one of them, re-soldering connections and no static precautions. No apparent problems or calibration drift so they seem to be robust. The best digital temperature sensor available.
Product is built to a high standard, shipping was very good - one week to arrive in Belgium is excellent during the holiday period. Documentation and communication scores were only added because the reviews software demands answers, the chip manufacturer's (Ti) documentation is good, and there was no need for other communications. My only comment relates to Tindie - I would prefer to see a selectable transaction currency $, €, or £, on the date of purchase, as the credit card exchange rates are variable... I will certainly recommend this supplier to others.