ir-led-proximity    Amando Mtz.sep-016

http://maxembedded.com/2013/08/how-to-build-an-ir-sensor/

https://www.youtube.com/watch?v=soa13KhVzsE  how to make a very simple Infra Red IR proximity sensor for Robots
https://www.youtube.com/watch?v=-uCG2RsV-MQ   Proximity Sensor with IR Led, photodiode and arduino
https://www.youtube.com/watch?v=iAWslxNC7e4   Using basic Infrared sensor for distance measurement?
https://www.youtube.com/watch?v=pmh2-VatK5s   How to work IR Sensor
https://www.youtube.com/watch?v=NHGiol0BDLQ   INFRA-555
https://www.youtube.com/watch?v=gRtdcxOXojo   Infra Red Obstacle Detecto
https://www.youtube.com/watch?v=DW0tG8578hQ   TRANSISTOR
https://www.youtube.com/watch?v=wubjZ398cnU   robots seg-linea
https://www.youtube.com/watch?v=36CdEAY8ztA   Curso de Robotica - Seguidor de Línea 1
     sensor comercial cny70
https://www.youtube.com/watch?v=NseZfzIwO_s  Sensor de Proximidad o Distancia (Como se hace) CNY70
https://www.youtube.com/watch?v=-vAxXwLKzkI   BARRERA
https://www.youtube.com/watch?v=S38js8mGvKE   detector de obstáculos con infrarrojo y arduino español
                                            
https://www.youtube.com/watch?v=psTa5ZrqAyo  Weekend Projects - Infrared Pulse Sensor Radio Schack
http://pulsesensor.com/
https://www.youtube.com/watch?v=FqhxYDeMuX4     sensor pulso cardiaco verde
https://www.youtube.com/watch?v=AkJ7VE-6AT4     circuito

https://www.youtube.com/watch?v=DJ2JjirBw1o   How to make a automatic light with pir sensor
https://www.youtube.com/watch?v=FWNEPQFsu-s  Tutorial: How to use the Motion Sensor PIR

https://www.youtube.com/watch?v=OQ2Kz7BZows   DETECT-COLOR
https://www.youtube.com/watch?v=BERHEVgaX40   Arduino and Color Recognition Sensor TCS230 TCS3200
https://www.youtube.com/watch?v=DKhTtNc3eoQ   Circuito Sensor de Colores (Como se hace)