How to connect a fingerprint sensor to an Arduino or NodeMCU, then store and read fingerprints.
An IoT lamp with gesture seonsor, temperature sensor, and multiple light effects.
Project tutorial by remnis
Controlling your project, like a Jedi, with the wave of your hand.
A Home Automation system using a Raspberry Pi 2 and Windows 10 IoT Core including an App.
Project tutorial by Christian Kratky
The SparkFun library doesn't want to be compiled with the ESP. You are right, a additional controller does increase the costs, but with a cheep China clone it's only about 3.50 € more. A second NodeMcu would be cheaper, but wouldn't look so cool ;-).
I will publish the code for the Nano this weekend. Although it's not very spectacular.
Well, install the Adafruit_VL53L0X library for this sensor. It comes with an example, that has all you need to get this sensor working.
You could use an ESP8266. When connected to your network and the sensor triggers, you'll just send an E-Mail.
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