I got a High-Temperature-Sensor and a Seeeduino V4.2. To all information I found this is supposed to work together.
I followed the standard instructions and got the latest libraries and examples.
However, the readings of the board’s and the probe’s temperature sensor differ greatly, which is far beyond any variation/error/reproducebility issue:
Room Temp: 20.29
Thermo Temp: 9.67
I struggle with this quite a while now, when i turned to seeed support, the answers were unfortunately not really helpful and I started wondering, if they sell more than they truly should offer here…
Please, has ANYONE got these sensors to work as offered by their description?
How to do a proper calibration, how to compute and where to put data from boiling and ice water measurings?
Sorry, for this desperate reach out to the community…
Hi @n1c0
Please refer to this GitHub readme URL to calibrating the probe and not the onboard sensor.
Follow the FAQ to do Grove-High temperature sensor calibration.
Besides, what I need to tell you is the “getThmc()” function. It is different from room temperature.
As you can see from the Hight_Temp.cpp, tempThmc = K_VtoT(vol) + tempRoom.
I think this is a formula related to cold junction compensation.
Dear jiachenglu,
Thank you for the advice.
Unfortunately I only use the Seeeduino and not a Raspberry device. Of course, the python code can not work out of the box (e.g. RPi._GPIO from grovepi lib complains running on non Raspberry machines). I would love to have everything in python though…
So, how to calibrate the sensor with the regular means (and basically sold by seeedstudio)???
Hi @n1c0
Sorry for the FAQ could be used to calibrate the probe’s temperature, if you look careful of the code.
If you don’t have a raspberry device, you can use the library to calibrate the getThmc() program with the regular means.
But what you need to notice is the “getThmc()” aren’t the same as “tempRoom”.
