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 · 2024-07-17

Ah, so close. Each bin is 3.75cm. There are actually 128 bins. The limitation of 18 is that we ran out of memory and could only send that many with 64 zones. If you want more bins, you can switch to 16 bins and get 4x more bins in each zone. Thats ...

John E KVAM · 2024-07-17

No - you cannot use a printed sheet. Turns out printer ink is a dye - and does NOT affect the reflectance of the paper. 940nm light goes right though dyes. You need paint. The best way to go, is to use spray paint. Dark gray should do it. On cardboa...

John E KVAM · 2024-07-16

The VL53L4CD with its UltraLite Driver is pretty much configured the way you want it. The only variable is the Timing Budget. Increasing this integration time improves the accuracy, but at the cost of latency and power. A very general rule of thumb i...

John E KVAM · 2024-07-15

If your problem is at I2C long-write issue, try adapting this code to your device. One example of how someone solved this problem for an Arduino platform is here: VL53L5CX/src/platform.cpp at main · stm32duino/VL53L5CX · GitHub have a look and take t...

John E KVAM · 2024-07-15

Just prior to that query is an I2C transfer of 0x8000 and not all MCU's can handle it. The trick is to see if there is a limitation on your I2C maximum length, and if so, write the I2C data in smaller 'chunks'. I know others have had this issue and s...

User statistics

User Activity

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: How exactly do I read the histogram on VL53L8CH

Re: Calibration card

Re: VL53L4CX / CD Calibration

Re: Wait for sensor booted fails

Re: Wait for sensor booted fails