UMLIFE Sensor Modules Kit, 16 in 1 Arduino Raspberry Project Super Starter Kits for UNO R3 Mega2560 Mega328 Nano Raspberry Pi 3 2 Model B K62

I was really looking for the clock module, but the other sensors are good too. Typical Arduino stuff.

I really like how many sensors there are since you can mess with a variety of them or create projects out of them. I only needed a few of the sensors so I haven't tested all of them. Most of them worked that I did use or try, but one of them didn't work, the temperature and humidity sensor. I noticed some corrosion on the back of the sensor (DHT11) which may have caused the issue. All the other sensors looked like they were in decent condition.The packaging was not the best. They were all stuffed into one bag with hardly any space in it, most of the sensors were in individual baggies, but some were just loose in the big bag. I contacted their support about my broken sensor and they gave me a partial refund since I had a defective sensor, which was very generous and kind of them. They also offered to replace the part, but they noted it would take a bit of time for that so I went for a partial refund. I was able to buy replacement sensors quickly with the refund.

I would have been happier if they just didn't include the switches with blobs of mercury metal. Also if the mercury switches had a little foam or padding around the glass. There's no part numbers to look up the data sheets on how to use them. I would recommend being able to look at the circuit board and understanding how they work, before using them. I haven't tried them out yet, but the build quality looks like it's probably functional. It will probably be a good deal, considering how low the price is.

It's a nice selection of sensors for just a dollar apiece, without some of the weird ones included in larger kits. Of the several I've tried, one was defective, but the seller refunded me a dollar and I was content.

Most of these will be useful. Saves assembling from scratch