About SLin.11

SLin.11 · 2025-02-06

Hi All,we tried to migrate from VL53L1CX to VL53L4CD for better precision in short range.both use ULD driver, we expect they work in similar way however it seems not.we set both to TB20 and compare power consumption in single shot case. It seems VL53...

SLin.11 · 2025-02-05

Hi All,I use STHS34PF80 for presence detection with embedded algorithm however it easily get stuck in presence status and cannot release from the status.Use case:People sit in from of the sensor around 30 cm, with lens on STHs34PF80.When people enter...

SLin.11 · 2024-03-20

Hi All,I want to port VL53L4CX bare driver to my M0+ MCU (36KB SRAM) however it cannot fit into RAM (.bss)What's RAM requirement of VL53L4CX bare driver ?(I used VL53L1CX ULD and VL53L4CD ULD driver that's ok) or how to trim down the memory requireme...

SLin.11 · 2024-01-17

Hi All,I started with example to make STHS34PF80 presence detection working.Now I tried to add effective presence detection range.Where should I start ? Is there a suggested process ?

SLin.11 · 2021-02-07

Hi All,I need a mechanism to detect motionless for 10s to make device enter power saving mode.For lis2dh12, I can use HPF with low x,y,z threshold and duration to detect an event that motionless for 10s.However I need more low power accelerometer lis...

SLin.11 · 2025-02-10

The environment is stable, no ambient temperature chageThere is no heating up object within FoVhowever TPresence is still raising.Is there other possible cause ? or does the sensor take human body as "heating object" also ?

SLin.11 · 2025-02-06

What's the possible cause of the rising TPresence value after presence is triggered ?Due to the keeping rising TPresence, finetune the PRESENCE_THS and HYST_PRES doesn't help since if you use high threshold it will be difficult (or takes time, latenc...

SLin.11 · 2025-02-06

However from my testing, under same TB (time budge) setting VL53L4CD takes much longer time than VL53L1CX so it consume much more power. Usually VL53L1CX ranging time follows TB setting with small overhead however VL53L4CD takes 1.5 times of TB for t...

SLin.11 · 2025-02-05

enable the bit SEL_ABS of register ALGO_CONFIG (28h) doesn't help

SLin.11 · 2024-03-26

Hi John, I found the root cause of the RAM issue isVL53LX_Dev_tA single instance takes around 9k which it too big for MCU SRAM.It there any way to trim it down or fine tune to fit limited SRAM ?

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Compare VL53L1CX and VL53L4CD, it seems VL53L4CD consume much more power

STHS34PF80 stuck in presence state

What's VL53L4CX bare driver memory requirement ?

How to fine tune STHS34PF80 effective presence detection range ?

How to effectively use lis2dw12 to detect motionless event ?

Re: STHS34PF80 stuck in presence state

Re: STHS34PF80 stuck in presence state

Re: Compare VL53L1CX and VL53L4CD, it seems VL53L4CD consume much more power

Re: STHS34PF80 stuck in presence state

Re: What's VL53L4CX bare driver memory requirement ?