Tangible Interaction

    Prof. Xu Ying Qing 

    Professor Head,

    Department of Information Art and Design,

    Academy of Arts and Design,

    Tsinghua University,

    Beijing, China 

How to build a portable USB charger?

https://www.build-electronic-circuits.com/dhtba-usb-charger/

Arduino Project:  https://www.arduino.cc/

Resource: 

http://www.playembedded.org/blog/en/2016/01/08/detecting-obstacle-with-ir-sensor-and-arduino/

IR Sensor http://blog.circuits4you.com/2016/04/arduino-ir-proximity-sensor-interfacing.html

              http://education.rec.ri.cmu.edu/content/electronics/boe/ir_sensor/1.html

LDR (Light Dependent Registors) Circuit https://www.build-electronic-circuits.com/ldr-circuit-diagram/