https://tinkersprojects.com/project/wifi-smoke-detector/
Smoke detectors are the best way to ensure there is not a fire but they only work if someone can hear it. This device fixes this issue by using WiFi to monitor and notify smoke in an environment. The device uses an ESP-12E and can hold up to 4 different smoke and/or gas detectors. The ESP-12E uses a 4051B to read each sensor then reports the sensors values to a server every 5 mins. I made the device to be mounted on a roof and can be powered by a micro USB or other power supply.
With 3D printing, there is a chance that the unit can set fire and some have. This device will ensure if it does it can be put out trying to prevent damage.