Vein detection circuit


hi, i wanted to make a circuit by which i can view/detect human body Vein. i have google it but i found only one to do that which is using 2w or 3w red super led at 650nm range. any one have idea how to make it with arduino or any micro controller so we can clearly view/detect human body Vein. please guys help me regarding this.


Are you referring to the vein as in the blood vessel that travels through the human body? What is the purpose of detecting the human vein? Is it to decide if there is a human in a specific room or is it something more on the medical side? What kind of sensor did you have in mind while brainstorming, like what did you already think of?