2025-08-20 7:57 AM
I'm currently trying to use the VL53L5CX to detect motion in the range of about 1m in front of the sensor.
This seems to work fine indoors - but outdoors - I don't seem to be able to get anything more than around 30cm, even with xtalk calibration, and a shroud.
I don't actually need 8x8 or even 4x4 - i basically just need to see if there is something passing in front of the sensor (think beam breaking - but with just one device)
Am I missing something ?
Is there some config to increase outdoor performance ?
Should I use a different sensor ?
Any thoughts gratefully received.
2025-08-21 9:57 AM
Outdoors is hard. The very sanative photon detector gets swamped by the sun.
But try this -
Switch from the VL53L5 to the L8. The good news is the software is nearly compatible, just swap the drivers. But the hardware is a complete change. All the pins are different and depending on how you set up, you might need another power rail.
But the L8 is significantly better in sunlight. It still won't range the 4 meters it does indoors, but you would normally expect at least a meter in bright sunlight. (Unless you point it directly at the sun. Do avoid that. It uses too much power to quench all those detects.)
Before going to all the trouble to re-design your board, consider buying the P-nucleo-53L8A1 and 'trying before you buy'. It's only $56 dollars. (if you already have the P-Nucleo from your L5, you can buy the X-nucleo-53L8A1, and just re-use the white Nucleo board.)
And do use the 4x4 mode. Works better in sun if you don't need the accuracy.
- john
2025-08-22 12:12 AM
Cheers - I'll try the L8 - and see if its any better.
I've tried 4x4 already - I was getting 30cm using that on the VL53L5CX.