Mayersven at 07:51, 11 June 2024

2024-06-11T07:51:04Z

← Older revision		Revision as of 09:51, 11 June 2024
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	= Related Tutorial Videos =		= Related Tutorial Videos =
	<youtube>gjj5KyK2qGI</youtube>		<youtube>gjj5KyK2qGI</youtube>

			[[Category:Sensor]]

Mayersven: Created page with "= Description = An LDR is a light-dependent resistor. It changes it's resistance depending on the light falling onto the LDR. 200px = How to connect it el..."

2024-06-10T22:39:05Z

Created page with "= Description = An LDR is a light-dependent resistor. It changes it's resistance depending on the light falling onto the LDR. 200px = How to connect it el..."

New page

= Description =
An LDR is a light-dependent resistor. It changes it's resistance depending on the light falling onto the LDR.

[[File:Ldr01.PNG|200px]]

= How to connect it electrically =
Connecting the light dependent resistor (LDR). The value you read is dependent on how bright it is.

[[File:Rldr.JPG|300px]]

= How to control it in MicroPython =
This makes Pin 34 an analog input and set it to 12 bit. It reads the analog value every second and print it to the console.

<syntaxhighlight lang="python" line='line'>
#Example usage for ESP32
from machine import Pin, ADC
from time import sleep

analogPin = ADC(Pin(34))
analogPin.atten(ADC.ATTN_11DB)

while True:
analogVal = analogPin.read()
print(analogVal)
sleep(1)
</syntaxhighlight>

== Code Example Arduino Nano Connect RP2040 ==
A0 is the analog input with 16 bit resolution. It reads the analog value every second and print it to the console-

<syntaxhighlight lang="python" line='line'>
#Example usage for Arduino Nano
from machine import Pin, ADC
from time import sleep

analogPin = ADC(Pin(26))

while True:
analogVal16 = analogPin.read_u16()
print(analogVal16)
sleep(1)
</syntaxhighlight>

= Related Tutorial Videos =
<youtube>gjj5KyK2qGI</youtube>

Light-Dependent Resistors - Revision history

Mayersven at 07:51, 11 June 2024

Mayersven: Created page with "= Description = An LDR is a light-dependent resistor. It changes it's resistance depending on the light falling onto the LDR. 200px = How to connect it el..."