About Johnvs

We've now tried some standard code via Arduino and get very similar results as with our software. The variability is a bit random but we used the first re-conditioning  steps (120C, <5%rh for 2hours then 70C, 75%rh for 6 hours). This worked for us - leaving the boards at 25C for many days did nothing. We will defininitely look into the kapton tape - not sure that was mentioned in previous versions of this document.  One last thing to try is to put one of these boards through this reconditioning steps again, as it still has a residual offset, maybe it works or maybe we need to replace it. ... View more

Hi BSTRobin Thank you for the link. We will certainly give this a go in parallel, but we're currently using the linux kernel driver to communicate with it. We've not had a lot of issues until this recent batch - we have essentially manufactured these boards the same as previous batches. I was hoping other people had similar issues with high offsets but yet managed to fix this. The only other instance I found on the forum was this: https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BME280-Humidity-Reading-Discrepancy/td-p/9334/page/2 The problem is we've got one or two that are offset by +40%. ... View more