SI1145 Grove Digital Light Sensor - not reactive

Other Hardware Sensors
1

Hi guys,

here we are for the second (but I am sure not the last lol) request of help with my too much ambitious first project!

Let's talk about SI1145 Grove Digital Light Sensor (right this one Grove - Digital Light Sensor — Arduino Official Store) and the fact that after the first day I tried it, it is now not working properly!

I have it linked on a ESP32 Node MCU (AZDelivery ESP32 NodeMCU Module WiFi Development Board WiFi CP2102) as part of a bigger project involving also an Arduino MEGA 2560 R3 with Ethernet Shield (my first post was related to TCP/IP communication between the two, now working great thx to good souls on this forum).

I supply him 3,3V (I saw it become angry if I give him 5V), it seems to work returning Vis: 260 (I have actually not understood if they are really lux, cause my phone is giving me 28lux with the same light, maybe scaled by *10), UV: 0 (I am testing it in my kitchen so it should be ok, not sun outside and luckily I still have a roof on my head) and IR: 261 (not able to understand if it is right, because it is my only IR sensor, so I would like him saying me the truth!).

But the problem is that they are pretty stuck! If put the sensor under a box, I supposed that Vis should drop (not able to see IR, yet lol), but it doesn't move, or just a bit, no sense. So something seems not working!

I have tried to find a solution around, I have tried different library (Adafruit Old, fixed and Grove), but I receive the same results. I have tried to supply him 5V but as I said it start to return big and no sense value.

Could be related to Amperage? I have a lot of sensors (3 I2C, 4 Analog and 1 Digital...), some of which I need to fix cause also them not working properly (going to write a post for each one maybe...).

Does anyone experencied and solved this issue with this sensor? Let me know if you need the code, but I can only send the part related to this sensor (sending all is madness), but this is copied from the example in the library because the sensor doesn't need to be hard coded.

Thx in advance for your help!

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Could be related to Amperage? I have a lot of sensors (3 I2C, 4 Analog and 1 Digital...), some of which I need to fix cause also them not working properly (going to write a post for each one maybe...).

According to the link you provided, the module is based on the I2C light-to-digital converter TSL2561 to transform light intensity to a digital signal.

You say you are using 3 I2C sensors.

Have you checked to see that you can find all the addresses. It may not find one or there is a clash (2 sensors have the same I2C address).

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Hi Gerri,

thx for your reply and thx for you advice!

Anyway I have already checked address, same manufacturer, different type of sensor, so unfortunately this is not the problem.

I have done more tests, and I think it is power related. Now I am supplying it with 5V, it became reactive, but I don't know why the lux value is floored to near 250, even if I put it in completely darkness.

Is there anyone who has had this issue with this sensor? I should brutally offset this value to keep it near zero???