I decided to buy a set of Kookeye sensors because their website had quite detailed manuals for each of them with instructions, code and diagrams. I chose this kit over other vendors because it included a lot of jumpers that looked better than the kit that came with my Arduino starter kit (which was a plus). So far I have tried the following three sensors. :one. IR motion sensor. Worked after a small time delay adjustment.2. Temperature sensor DS18B20. The Kookey website contains incorrect hyperlinks for this module. I used the search box on their website to find the correct manual.3. Temperature and humidity sensor DHT11. The module diagram and pinout on the Kookeye website is incorrect for the included 3-pin module. Read the label on the sensor to connect it properly. Also the link to the DHT library does not lead to a zip file. So this kit is a little frustrating to work with, but it was fun (I can now say DHT11 works). Just use the internet to find a solution. ------ UPDATE: I have now successfully used the Light Sensing Light Sensor Module, BMP180 Barometric Sensor Module and Relay Module. Easy to use although you will have to search the web for instructions as there are some incorrect links on the Kookey website. The water level sensor module works, but it is difficult to decipher and calibrate at depth. The only module that gives trouble is the DHT11, which gives me correct humidity readings but no temperature readings. AUTHCODE: CO022520KSK-UPDATE031220
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