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Gissio / radpro

Custom firmware for Geiger counters/radiation meters (FS2011, Bosean FS-600, FS-1000, FS-5000, FNIRSI GC-01)
MIT License
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FNIRSI GC-01: Wrong device temperature statistics #28

Closed Alter0ne closed 5 months ago

Alter0ne commented 5 months ago

Hello! I have the device with ch32f103 processor. It shows the incorrect temperature: 9 °C when the environment is 28 °C. Photos Also my device resets the current date and time after rebooting. But the time zone is saved correctly. Perhaps it's my battery problem?

Gissio commented 5 months ago

Regarding the real-time clock. Date and time should keep running after poweroff. Check the button battery's voltage (it's a CR1220): it should be around 3 V. If it doesn't, replace it.

And the temperature discrepancy is expected. STM32F103 and compatible microprocessors are not temperature calibrated in the factory. This means there can be a variation of up to ± 20 °C from the actual value, because the temperature sensor of different production batches can be physically different.

To fix this, there should be a setting to calibrate this. That's actually a question I have been asking mytself. And this question goes to everyone who reads this. Does it make sense to show uncalibrated temperature? Should there be settings to fix this? In order to keep things simple, I think it would be best to not show temperature at all (if it's wrong, it makes no sense as it confuses more than helping).

martin-machacek commented 5 months ago

My device shows the temperature 13 to 15 degrees Celsius higher (ambient temp is 24, GC shows 38). In my opinion it doesnt make sense to show it, if there is no way to calibrate.

Gissio commented 5 months ago

Agreed. Next beta will replace device temperature with device battery voltage (which makes more sense).

Gissio commented 5 months ago

I just released beta21 which fixes this. Please let me know if it works.

https://github.com/Gissio/radpro/releases

martin-machacek commented 5 months ago

Unfortunately it turns on and the screen is blank (probably the background color, does not seem to be white). I can hear particle clicks and particle LED flashes, but nothing else. Key presses don't help.

Gissio commented 5 months ago

My bad. Try beta22 now!

martin-machacek commented 5 months ago

beta22 works and shows the battery voltage. 4.539V connected to USB, after disconnecting it slowly settles for cca 10 minutes down to 3.780 and than slower as it discharges.

Gissio commented 5 months ago

Nice!

Gissio commented 5 months ago

Can I make a request? It would be great if you can measure the discharge curve of the battery so the battery indicator shows correct values.

This would imply fully charging the device, and taking note of the voltage value every 10 minutes, until the voltage drops to 2.7 V. It would be great if you do this with the screen off, turning it on only to read the voltage. Can you do this?

martin-machacek commented 5 months ago

I can try tomorrow. I am thinking of ways to automate this. Wouldn't it be possible to log it internally?

Gissio commented 5 months ago

It would be, but I think it takes less time to do this manually than for me to program the code.

martin-machacek commented 5 months ago

Ok, I will give it a try tomorrow then

Tig3rch3n commented 5 months ago

I can test both of my devices with the power profiler in a few days. I even plan to do different Setups

Brightness max/Display on all the Time vs Brighness min/Sleep after 30sec and a few in between

Gissio commented 5 months ago

A measurement on one device should be enough.

Use only brightness max/display on all time so the measurement takes less time.

Thanks in advance!

Tig3rch3n commented 5 months ago

Btw... would it be possible to enable a Temp Offset? I have a big'ish diff in both directions

Roomtemp 23° Device 1 14° Device 2 27.5°

martin-machacek commented 5 months ago

Temp offset setting would be nice.

I am still collecting the voltage values. The battery lasted whole day yesterday and still has 3.533V. After having it switched off for the night I have charged it up for 30s and when the voltage dropped back to the last value from yesterday, I have resumed logging.

Tig3rch3n commented 5 months ago

Same, i did a Sleep after 30s run yesterday and do a always on min brightness at the moment :) I'll get the Power Profiler in a few days, so i'll do that maybe over the Easter Holidays

martin-machacek commented 5 months ago

Here is my voltage log: Fnirsi-GC-01-voltage-log.txt The device turned off after the last value of 3.042V Parameters during test:

Gissio commented 5 months ago

They say an image is worth a thousand words.

fnirsi-gc01-battery-discharge

Thanks for all the hard work!

Gissio commented 5 months ago

Updated curve is available in 2.0rc01!