Arduino Light Meter with photo resistor and OLED display
Arduino Light Meter with photo resistor and OLED display
This
video show how to make an Arduino Light Meter using an Photoresistor or
Light depended resistor(LDR). A 128X64 i2c Oled ssd1306 display is used
to display the light intensity in percentage numeral and bar. I used an
Arduino UNO 3.3V clone which uses Atmega328P.
Photo resistors
are cheap and easily available on Ebay, Bangood, Sparkfun etc. Library
used U8Glib: Installed directly from the Library Manager in Arduino IDE.
Connect the photoresistor or LDR between 3.3V and A0 analog input pin
of Arduino. Also connect an 12K or 10K resistor between A0 and ground
pin of Arduino. The OLED display VCC is connected to 3.3V of Arduino.
Gnd to Gnd of Arduino. SDA of OLED to SDA or Arduino, SCL of OLED to SCL
of Arduino.
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