Need help converting brick board Temperature sensor numbers

End-Of-Life Products & Services Tech support before 2012
#1

Hi,

Bought a Temperature sensor brick board the other day. It connects fine and and data is flowing through nicely, however all my values are for e.g 471.

480
480
481
513
526
536
538
547
552

Can someone help me convert this to Celcius?

Thanks.

#2

What’s the IC based on DXXB20?

#3

Hi,

Its LM358
91M
YR090

Really unsure if thats it. First time trying to read for a number.

I’ve actually figured it out i think. I went on to find conversion from voltage to temperature. After finding that I realised that the values being output are way below what should be, so I compensated.

Serial.println((analogRead(temp) + 252 -500)/10
//252 is what I needed to compensate.

That’s the math I had to do in order to get it reading something in reasonable range and in Celcius.

#4

Good work, handy for others

#5

That is yielding numbers that are off by around 5 C for me, so I guess there is significant sample variation and they each need to be calibrated. Just thought I would mention that for others.

#6

I know at the bottom of the Electronic Brick Temperature Sensor page there is a Datasheet for TTC03 which on page 3 has a graph. If you’re able to make a formula out of it then I’m sure people here would be appreciative if you posted it.