About John E KVAM

John E KVAM · 2024-07-08

I heard that ST has extended the lifetime of the L0, L1 and L3. Can you tell me what the new dates are and where on the website I can find them?

John E KVAM · 2023-02-01

Customer asks me how I evaluate where the photons go.

John E KVAM · 2022-07-19

I am checking signal status also for Big obstacle it showing Distance up to 2.1 meter(210Cm) and status is 0, and for small obstacle showing distance up to 1.2 meter(120 cm) and status is zero, it is not useful in outdoor environment , and it Hangs a...

John E KVAM · 2022-07-18

How can one adapt the WrMulti() and RdMulti() I2C functions for MCUs that have an I2C length limit? This is an oft-asked question.

John E KVAM · 2022-06-16

John E KVAM · 2024-07-25

Ah - There is a bug in the initial set of blue boards for the VL53L8 that makes causes a failure when connecting a satellite board. You can either wait until the new versions come out or you can have a look at: an5945-how-to-connect-the-satelvl53l8-...

John E KVAM · 2024-07-25

All the information you have regarding the coverglass on an VL53L0, L1, L3 or L4 is valid for all of them. You can also look at VL53L1CX cover glass guideline . It's valid as well. The L1 is a bit taller and a bit wider, but the others are exactly th...

John E KVAM · 2024-07-24

Andy - The issue is that the offset affects the crosstalk and the crosstalk affects the offset. So the solution is to do the offset cal with a close bright target. If one gets a few thousand photons from the crosstalk and a many, many million from t...

John E KVAM · 2024-07-24

The trick is in the platform.c file. This file contains the layer between the sensor and the MCU/CPU you are running. It translates the VL53L0_RdByte() andVL53L0_WrByte() functions in the API into the I2C functions your MCU uses. But it was writte...

John E KVAM · 2024-07-24

yes it's possible. but in your code once you have configured the initial sensor to be 62 don't mess with its LPn line! just bring the other sensor out of reset and initialize it. There will be no confusion. you will have one at 52 and one at 62. it's...

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VL53L0, VL53L1 and VL53L3 Longevity

Where do the photons go?

Typical issues with VL53L1X, range and status

I2C multi-byte read and write functions with i2C byte limit.

Customer asks, "I am using VL53L1X , code works fine when there is obstacle in the range of 0 to 4 meter ,if no obstacle above 4 meter sensor is giving random values , how we can fix this issue?"

Re: Multi tof sensors to one I2C bus

Re: TOF sensor distinguishing between object and person

Re: Vl6180x cross-talk calibration procedure

Re: vl53l0/1xv2

Re: Multi tof sensors to one I2C bus