Greetings,
All I am looking for is a sensor to detect the precense of blood for a medical project. Specifically one that would work with the analog pins to analyze the characteristics of the blood. I don’t want the sensor to go off with other liquids, such as water, which is my main concern and why I am asking here for help. Just a sensor to detect blood.
Specifically one that would work with the analog pins to analyze the characteristics of the blood.
What characteristics?
Under what circumstances would your sensor come across other fluids that were not blood.
You see we get a lot of beginners wanting some sort of magical sensor to make something that does not exist commercially. If something does not exist commercially then there is often a very good reason for this.
So what exactly are you trying to do?
use a light barrier.
All I am attempting to do is yield a result into the serial monitor that there is blood present. The water sensor can detect all forms of liquids, however, if another liquid came in contact with the sensor it would begin the medical procedure. All I need the sensor to do is send a value ONLY when blood is present.
I would do a salinity, pH, and liquid sensor however the salinty sensors are rather expensive.
I know arduino rather well so I don’t need a tutorial on how a blood sensor would be programmed, I just can’t find a sensor anything like this.
Actually, a light barrier would work rather well. I’ll give that a shot. Thank you.
A salinity sensor should be a fraction of the cost of a pH sensor, if only for the super simple probe, no fancy glass bulb like pH needs. That still doesn't necessarily filter out all other liquids. Water can come in lots of salinities and pH levels.
Probably the least unreliable sensor to detect blood and reject all other liquids is one of the "walking talking" kind, which can be programmed (though often euphemisms like "instructed" or "taught" are used) to press a button when blood is detected using built-in probes such as smell, taste and vision.