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| − | = Description =
| + | #REDIRECT [[Light-Dependent Resistors]] |
| − | An LDR is a light-dependent resistor. It changes it's resistance depending on the light falling onto the LDR.
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| − | [[File:Ldr01.PNG]] | |
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| − | = How to connect it electrically =
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| − | Connecting the light dependent resistor (LDR). The value you read is dependent on how bright it is.
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| − | [[File:Rldr.JPG|300px]]
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| − | = How to control it in MicroPython =
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| − | 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.
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| − | <syntaxhighlight lang="python" line='line'>
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| − | #Example usage for ESP32
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| − | from machine import Pin, ADC
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| − | from time import sleep
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| − | analogPin = ADC(Pin(34))
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| − | analogPin.atten(ADC.ATTN_11DB)
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| − | while True:
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| − | analogVal = analogPin.read()
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| − | print(analogVal)
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| − | sleep(1)
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| − | </syntaxhighlight>
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| − | = Related Tutorial Videos =
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| − | <youtube>gjj5KyK2qGI</youtube>
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Latest revision as of 00:40, 11 June 2024
