Temperature Measuring Without Any Sensors In NRF52832

RE: Temperature Measuring Without Any Sensors In NRF52832

gulshan212 — Fri, 02 Dec 2022 07:28:57 GMT

I just can't expect this, I never think that temperature may be measured without sensors.

RE: Temperature Measuring Without Any Sensors In NRF52832

shabaz — Wed, 09 Nov 2022 23:31:57 GMT

That's got to be the longest article on using an internal temp sensor without a PCB manufacturer recommendation.

It's 2 lines with a Pi Pico:

https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/temperature-gauge

But these sensors are not intended for environment monitoring. The silicon sensors are cheap/inaccurate as it is, and then they are right next to the processor, so that they sense the temperature of the powered component, not the ambient temperature. Granted it could be similar if power consumption is low, but then your code might want to put the processor to sleep in-between readings perhaps. A thermistor (or anything) is a better option.

Also why are the BLE header files included in the code, if it's not being used?

RE: Temperature Measuring Without Any Sensors In NRF52832

baldengineer — Mon, 07 Nov 2022 16:16:26 GMT

Why did you put a PCB ad in a post about a project that doesn't use a custom PCB?

RE: Temperature Measuring Without Any Sensors In NRF52832

misaz — Mon, 07 Nov 2022 14:06:29 GMT

Note that resolution != accuracy. Resolution means that it can return temperature in multiples of 0.25 °C, so for exampl 25.5 but it cant return 25.6 because 25.6 is not multiple of 0.25. Accuracy is +-5°C in case of nRF52832 and it means that returned value is +-5 °C from real temperature. It is simple temperautre sensor inside the package used mainly for measuring tempearutre of the die. It measure temperature inside the chip. Not temperature of the package. It is not designed for accurate temperature measurements like in case of weather station or medical applications. I personaly think that it is here for some internal temperature compensation and exposing value to the user is just side efect.

RE: Temperature Measuring Without Any Sensors In NRF52832

dougw — Mon, 07 Nov 2022 00:19:41 GMT

Good work. Was the internal sensor accurate or does it need calibration?