Light Sensor Counter

keuwlsoft

Contains ads

About this app

The light sensor in your device is continually monitored and when the detection level is crossed, the counter is increased by one.

Can be used to count each time a light source shines on the sensor. Or alternatively, shine a light on the sensor and count each time the light beam is broken.

• Illuminance values in lux (lumens per square meter) or foot-candles.

• Detect on rising or falling past the detection level.

• Reduce double counts with optional no-count wait after detection.

• Graph to show illuminance values.

• Counts indicated on graph and with optional 'click' sound.


Light sensors will vary in sampling speed, resolution and accuracy from one device to the next. For indication only.

Ratings and reviews

I am an electronic enthusiast and i just developed a circuit that switches poles every 5 mins theoretically. I waited a few times to see if it actually switches on and off keep missing the led going on or off with other work keeping me busy. I found this app and setmy phone facing the led....and forgot about it for 15 mins to come back and see the counter showing 3 times triggered. Awesome, now i can do other work while testing circuits by temporarily installing a led in the circuit for this app

I like the idea. Good start. But a few improvements would make it far more useful. 1. The purple border takes up valuable screen resource on small devices. Remove it and the inner border. This will expand room for the plot arena. 2. Sometimes one needs to trigger on both rise *and* fall. Please add this option. 3. It would be very useful to have a lower *and* upper (bilevel) trigger thresholds. A count is incremented when the signal crosses both thresholds. 4. Also allow use of the back camera.

Very cool. It does appear to work well; unfortunately it seems my phone light sensor is not designed to react quickly to flashing LED signal. Works great for low frequency such as broken-beam detection or when ambient light level changes (you could put your phone in the fridge and count how many times the door opens and closes), just not working to detect fast strobe frequency. Nice app!

What's new

v1.03 Updated to use newer code libraries to target newer devices. Added Sensor High Sampling Rate Permission required for newer devices (Android 12 and above).
v1.04 Updated to use newer code methods to better target and run reliably on devices in 2024.