Imaging (sensors)

How to reliably determine (long touch) DETECT events with the STM8TL5x TouchSense / ProxSense state machine.

Hi. I'm working with the STM8TL52F4 MCU and its touch/proximity sensing peripheral. I made a simple touchkey sensor simulating Fig 3 AN4313 (ST App Note: Guidelines for designing touch sensing applications with projected sensors). If the sensor is to...

VL53L1X - Interrupt(s) happening immediately after startMeasurement is called

In my setup I have VL531LX proximity sesor connected as per datasheet. Every time when I call startMeasurement interrupt is risen immediately after (often two interrupts). By user manual UM2356, figure 3. this clearly should not happen. I was wonder...

Could not receive the true unswer from VL53L1

Gentlemen! Sorry for bothering you.I try to use VL53L1 with the Light Driver. The power level is 3.0 V, so I changed the Initialization data array, cell 0x2E from 0x00 to 0x01 and cell 0x2F from 0x00 to 0x01. I wait for the Device ready (SensorState ...

Problems calibrating VL53L0X ToF distance sensor (VL53L0X_perform_offset_calibration, VL53L0X_perform_xtalk_calibration). bug?

RoutineVL53L0X_perform_offset_calibration from src/core/src/vl53l0x_api_calibration.cpp is giving strange results. By my opinion the problem is in uint16_t sum_ranging which should be of type uint32_t due to later bit shifting (<<16), which needs to ...

Looking for a detailed spec for VL53L0X

 register addresses, and definitions,I see a code example but i don't want to reverse engineer it.There must be a spec available, how else can you use it on any platform.I see some specs but not able program ThanksJohn 

How can we detect a target if it doesn't cover the FoV(i.e., a target smaller than the FoV)?

If it's not doable, what is the reason for that? (why the distance cannot be measured with the VL53L1X if a target is smaller than its FoV?)​

I would like to use the VL53L0x to measure the height of liquids in the holding tank and water tanks of a boat. Is this likely to work? Distances are 5 cm - 50 cm

Can I place a "window" of thin mylar or glass in front of the sensor at a distance of 1 cm or so to shield it from the liquids in the tanks?

For VL53L1X, we have planned to use multiple sensors in a single bus. For that we have changed the address of the sensor and worked. But for every power cycle the sensor resets to it factory address (0x29). How can we change the address

VL6180X Bus Lockup

In our design the Proximity sensor is locking up in 90% of the boards. It ranges properly on its own. But when added to the bus, rest of the sensors function properly and only VL6180X is locking up. This is an ongoing issue.In the boards where its fa...

I2C issue on STM32F746G with VL53L1X breakout board.

Hello everyone, I've a problem with the communication I2C. I've generated the I2C communication base code with STCubeMX for the STM32F746G discovery board. And I got an error at I2C_WaitOnTXISFlagUntilTimeout(). Because NACK is detected. I've also te...