iPhone 6 Water Damage Recovery: Compass Restored, Spirit Level Calibration & Related Systems

forehead

Iphone 6, after adventures with water, cleaned and dry. I was able to start and recover the data, however ... the compass and spirit level that didn't stand up did not leave me alone.
I translated the Bosch system - the compass came back - it's ok.
The spirit level has started, but I can not reset it - it shows completely "cosmic" horizontal and vertical laws.
I noticed that with a hot plate, level "0" is. As the plate cools down, the levels diverge.
This indicates a type of semiconductor problem, but where to look for the fault?
Which system is responsible for all leveling?

Thanks.

the wallpaper moves together with the telephone. When lying still - the wallpaper / motion / is also stationary. If you are moving, you have wallpaper animation enabled.

accelerometer ... it gives food for thought, hmmm
for the gyroscope to work, you may need a proper linear acceleration and pressure / height reading.
Question: how to diagnose a pressure sensor? and where to look for an accelerometer in Ip6?

RafalB wrote:

tojaert wrote:

where to look for accelerator in Ip6?

On the diagram?

Overall, the iphone compass / accelerometer assembly has a total of 3 layouts
- magnetic field sensor
- accelerometer
- 3-axis gyroscope with accelerator

The pressure sensor is at the memory of nand, you can diagnose it by reading in the application

forehead RafałB

on my Vietnamese scheme such information has not been placed and the network is also silent so suggest:

- magnetic field sensor - where, what arrangement?
- accelerometer - ?? where and what is the layout
why do you think that 2 accelerometers are mounted / I'm not saying it's impossible /
- the gyroscope is Bosch or InvenSense or / 3rd I don't remember / mounted in the U2203 field. In addition, 6 axis, not 3 axis as you write (6 axis gyro MP67B IC chip). Remember to connect it to the AKM Compass in the U1901 field.
... and here again golden thought: 6 axis gyroscope is a spirit level in a straight line.
... and one more I've soldered three Bosch chips to this CD - counting on the fact that I did something wrong (but the effect was always similar). Is it possible that these three are damaged or is it possible to overheat so quickly when soldering? After all, they are soldered to paste, i.e. min 280 degrees, hmmmmm

and additionally: which application reads and displays the readings from the Bosch pressure sensor mounted in the U2204 field - because you probably mean the Phosphorus system. Everything I found during these several dozen minutes (since your last message) reads and displays the parameter from the network!

I haven't read such a devious answer in a long time.
I see you don't know much, you cover your ignorance with colleagues. Sad.
Anyway, I'll give you a point because you have brought me to some "truth".
Do not write more in my posts. I do not need (or we - if someone agrees with me) here "such help in solving the so-called difficulties".

PS, I don't use used items. I buy new parts in tape. So here too, your "theory" collapses.
greetings and wish you (sincerely) successes and knowledge - it can be useful.

forehead all
let's see what we have in this picture ... I guess the author had the intention to show me a magnetic field sensor - this is what I asked in connection with the stream of "good advice and signposts" (colloquially called a magnetometer). A setback again. The selected integrated circuit is not a magnetometer but a compass. Actually, an e-compass from the Japanese Asahi Kasei (It has as much in common with the magnetic field as an iphone with a gps (i.e. nothing, everyone knows this example of creative marketing and ingenuity of engineers). I have already written above about "live" connection to the AKM-Compass compass in field U1901. This is the device (the formal name according to Farnell's catalog is "Asahi Kasei's azimuth sensor No. AK8973"). A well-programmed chip using wifi and bluetooth indicates geographical or magnetic north (theoretical, not measured) In 99.9% of non-scientific cases, such a measurement is sufficient. After all, it is a telephone and not an integrated measurement platform.

I return to important matters -
I was able to determine that the unfortunate level (buble spirit level gauge - for the inquisitive) and the sets of other sensors are actually contained in 3-4 integrated circuits. We're still talking about iP6 and 6+.
I refer to reports from "Designlines MCU neews & analysis - shaping the futures on MEMS 'n sensors" / MEMS- micro-electro-mechanical-sensors / and pre-sales research according to appleinsider.com
Bosch BMA280 - three axial accelerometer with built-in pedometer (charging place -U2205), coupled with a Bosch pressure sensor (charging place U2204) and the above-mentioned AKM-compass (charging place -U1901) and InvenSense MPU-6700 series - six-axis accelerator with gyroscope (place of charging U2203).
Yes, two accelerometers mounted on one plate.
I explain why two-in short, because it's late:
bosch as a device enabling fast start and low consumption of amps - is used by ios when there is no need for full integration of 6-axis measurements, low accuracy is satisfactory - e.g. screen orientation or pedometer.
Invensense, on the other hand, engages the full orientation of six measuring axes at the expense of energy efficiency and high accuracy. It is used in games with position control, VRs etc. My spirit level is a component of this device.

so much for today, best regards

edit - I correct obvious typos

waiting for package with parts. I hope it will reach the weekend. Anyway, only on weekends I have some time for such games.
I will answer this matter.