Ok, today i mount shielded cable gnd it in cab mounted WAS when looking multimeter get it about 2,48v zero WAS. Change all setting for it and try… its goes super first 20min then my was zero goes to left. (Wheels to left turn) about 1,2,3° always to left. If i check between gnd and signal and straighten wheel i got 2,48 from beginning
So your WAS is fine, you have some other problem.
20min then my was zero goes to left.
Show video of this situation where The Zero moves.
If voltage is 2.48 (with wheels straight ahead) both before and after you see problem, then physical WAS zero did NOT move.
You could have faulty ADS1115 or ??
Also show photo of your PCB
It can be a thermical issue, bad connection, bad solder joint. Some people wrote about soldering issues at pcb ampseal connector. The voltage regulator for the WAS on the pcb, does it provide stable 5V. You try can measure WAS-Signal direct on the pcb. (header, where the additional ADS will be placed.)
Have you tried powering directly from the battery?
What is/was the bahavior on the workbench?
Making good wiring work with the right connectors and tools helps a lot.
I think its something easier, what can do or check in field. For this i will need wait few days until job done
You’re right, soldering appears really bad qualitiy. Above IC pins SCL, SDA, VDD!!!, … are looking absolut badly. The bad solder joint of VDD can be the reason of your problems.
Check with a magnifying glass at the joints as i had a bad soldier joint on the underside of the pcb by jlcpcb, the tiniest blod was shorting between 2 pins
Ads1115 is bad for sure now sensor send 2.5v but reading WAS is 0 then -65 then +7. What i can do? Solder new one? Must be same or? Programing? Anyone have micro 4.1 for sell or 4.5 if its same
You can remove the SMD one and use the ADS1115 breakout board which can plug into the header nearby the SMD chip.
When ordering this ADS1115 breakout board be informed that there are two different pin variants availiable.
Thank you all. Will order breakout ads and left her for spare. Or combine setup
Before you remove the ads1115, then just try to solder the missing connections, no harm can be done, if it doesn’t work then remove the smd ads1115.