The TTP223B Capacitive touch sensor is a button type sensor that allows you to detect when it is being pressed. In this post I review the sensor and provide code and a wiring diagram to use such a sensor.
This post is a review of the “Light Intensity Sensor Module 5528 Photo Resistor” and includes code and images to use the sensor. There are a couple variants of this light sensor sold by different companies but all have similar components and designs. This model is sold by HiLetgo CN and is available on amazon (link below).