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→Analog voltage reading method
| align="left" | 0.5 mA
| align="left" | 0.5 mA
| align="left" | 5V
| align="left" | 5V
|}
''This table indicates the approximate analog voltage based on the sensor light/resistance w/a 5V supply and 10KΩ pulldown resistor''
If you're planning to have the sensor in a bright area and use a 10KΩ pulldown, it will quickly saturate. That means that it will hit the 'ceiling' of 5V and not be able to differentiate between kinda bright and really bright. In that case, you should replace the 10KΩ pulldown with a 1KΩ pulldown. In that case, it will not be able to detect dark level differences as well but it will be able to detect bright light differences better. This is a tradeoff that you will have to decide upon!
{| class="wikitable" border="1"
|-
| align="center" | Ambient light like...
| align="center" | Ambient light (lux)
| align="center" | Photocell resistance (Ohms)
| align="center" | LDR + R (Ohms)
| align="center" | Current thru LDR+R
| align="center" | Voltage across R
|- style="font-size: 90%"
| align="left" | Moonlit night
| align="left" | 1 lux
| align="left" | 70 KOhms
| align="left" | 71 KOhms
| align="left" | 0.07 mA
| align="left" | 0.1 V
|- style="font-size: 90%"
| align="left" | Dark room
| align="left" | 10 lux
| align="left" | 10 KOhms
| align="left" | 11 KOhms
| align="left" | 0.45 mA
| align="left" | 0.5 V
|- style="font-size: 90%"
| align="left" | Dark overcast day / Bright room
| align="left" | 100 lux
| align="left" | 1.5 KOhms
| align="left" | 2.5 KOhms
| align="left" | 2 mA
| align="left" | 2.0 V
|- style="font-size: 90%"
| align="left" | Overcast day
| align="left" | 1000 lux
| align="left" | 300 Ohms
| align="left" | 1.3 KOhms
| align="left" | 3.8 mA
| align="left" | 3.8 V
|- style="font-size: 90%"
| align="left" | Full daylight
| align="left" | 10,000 lux
| align="left" | 100 Ohms
| align="left" | 1.1 KOhms
| align="left" | 4.5 mA
| align="left" | 4.5 V
|}
|}