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I am using a very simply potential divider circuit with the 4 QTC Sensors in wheatstone bridge configuration. The sensitivity is very low and it requires too much force to show the required change in resistance. Is it possible to change the circuit in any way to improve the sensitivity?
I have tried a few temperature sensors and they have the same problem of having a very slow response. Can you suggest a temperature sensor that can give me an analog value of the temperature within 1 sec of the object touching it
One of the guys in college is using those force sensors for small forces and he is pretty happy with them.Temperature is really my field. I haven't used that sensor before. How about using a thermistor, they have fast response times I think.
Hard to tell when we don't know the original schematic, so please post it.It sounds weird that it shouldn't be sensitive, but if you have the same amount of force on all four of them, it would explain it though.
Low mass equals fast response times.Low mass NTCs should be quite easy to get hold of, they were used extensively in the health sector before the IR ear thermometer outdated them and they are very fast responding.
I am dealing with forces upto 5N only (handshakes, grabbing objects) so it is not sensitive enough for me.
Do you have any low mass ntc in mind? The one I have tested and am having trouble with is NTC RL3004-291-97-D1
Started by derrick_chi
Started by BANE
Started by galannthegreat