Fingerprint sensor with Arduino and ESP

With a 20€ fingerprint sensor and an Arduino or an ESP, you can create your own biometric access control. Banggood provided me with this sensor, so I can show you how this works. Banggood Fingerprint Recognition Module -- https://goo.gl/QLYiBi Wholesale Arduino Compatible SCM -- https://goo.gl/JxgyVQ Amazon Fingerprint Sensor -- https://amzn.to/2QyB98O Arduino Uno -- https://amzn.to/2RwAMc1 NodeMcu -- https://amzn.to/2AQu9KN Project page https://rohling-de.blogspot.com/2018/...