How to make an IoT fire alarm.

If you are looking for a nice fire solution in a place where false alarms happen a lot, this is by far the cheapest, best solution I know. What you will need - Hardware NodeMCU ESP8266 Breakout Board [x1]Flame Sensor for Arduino (Analog) [x1]Pack of generic jumper wires [x1]Generic Breadboard…

How to use the DHT11/22 sensor to log data to Google Sheets

By this time, you'd probably want a temperature sensor in the house - one less than $25. If you have one, you are probably wanting a better one. Here is an easy solution to this problem. Things that you'll need - Hardware Breadboard (Generic)DHT22 Temperature and Humidity SensorNodeMCU ESP8266 Breakout…