Marking on VL53L1X and VL53L1

[pthakkar]

What is the marking on the bottom side of these sensors i.e. VL53L1X and VL53L1? 

for eg. on the bottom of VL53L1X it is written VL53LIB...so what is the marking for VL53L sensor. 

Basically I want to know how can I distuingh between these 2 sensors as both of these sensors returns the same model and module id.

[John_Kvam · Accepted solution]

Alas you really cannot tell. The VL53L1 (no X) is the VL53L1X that's guaranteed to run the more demanding histogram code. I think they all start out as the same chip until some are selected to be able to run the Histogram code. In fact lots of the VL53L1X chips WILL run the tougher code, but you have no guarantee they will run it forever. 

In very small batches or for experiments, you can treat them all as the (no X) chip, but if you are going into production you might be unhappy with the failure rate. 

Or treat them all as if they were all VL53L1X chips - that works. The non-histogram code works on both chips. Guaranteed!