Reading of the LDR in LDR light monitoring system?

Hello Sir,

Sir, I made my first Light Monitoring project and i am getting the readings according to the light conditions. But, I am too much confused about the unit of that reading like i got 1.02 thousand what is the unit of 1.02 thousand or how can I calculate the light falling on LDR. What is that 1.02 thousand, what is its unit. I am confused about it, how can I come to know that how much light is falling or what’s the brightness of the light?

The maximum value that the LDR sensor can detect is 1.02 thousand so,don’t worry since you got the right value and keep going with the modules or try the sensor in darker places

Can you please tell how does this value comes?

That 1.02 thousand is the value of intensity of the light. The LDR is a sensor in which the resistance is inversely proportional to the light falling upon it. More the light falling upon it at that instance lower the resistance of the LDR. Now what happens the resistance tells us the voltage due to it using the formula Voltage = Current multiplied by resistance, V= I x R. I’m assuming that the intensity of light in this scenario is called Lux and it has a specific equation for using voltage. Also the maximum unit of intensity of light it can provide is near to 1000 so 1000 is the highest in my opinion.
Hope this helps.

is the highest value of ldr is 1.02 thousand is fixed, can we increase the maximum threshold for that, as i putting little bit light through the ldr it shows the value 1.02 thousand. so it get very confusing in making different count of intensity

A light dependent resistor(LDR) measures the intensity of light which is denoted by Lux. So in your case the reading of the LDR is 1.02 thousands Lux.
Lux is inversely proportional to the resistance of the LDR.

Hi, I tried in room light, with my mobile torch on LDR. In both case it is 1.02lux. Then I covered the module and got 490 Lux. So it is working. May be you should keep the module for 14 hours in the same place so that you can see the change in values. It may not be possible to different light conditions manually and see visible change in values.

good luck

The unit used for reading the LDR is Lux. So getting 1.02 Lux says that the room is bright

when u connect the LDR and 10K resistor to the bolt wifi module in the respective pins and set up wifi connection via bolt app and then link the product to cloud and then create a code for your product .then click the Deploy configuration 10 sec once and then click view option . you will receive a data as shown below