Difference between revisions of "LDR"
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(Created page with "= Description = Text Image(s) = How to connect it electrically = Text Image(s) = How to control it in MicroPython = <syntaxhighlight lang="python" line='line'> # todo #...") |
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= How to connect it electrically = | = How to connect it electrically = | ||
| − | + | 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 = | = 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. | |
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<syntaxhighlight lang="python" line='line'> | <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> | ||
= Related Tutorial Videos = | = Related Tutorial Videos = | ||
| − | + | <youtube>gjj5KyK2qGI</youtube> | |
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| − | <youtube> | ||
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Revision as of 00:21, 30 August 2020
Contents
Description
Text
Image(s)
How to connect it electrically
Connecting the light dependent resistor (LDR). The value you read is dependent on how bright it is.
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.
1 #Example usage for ESP32
2 from machine import Pin, ADC
3 from time import sleep
4
5 analogPin = ADC(Pin(34))
6 analogPin.atten(ADC.ATTN_11DB)
7
8 while True:
9 analogVal = analogPin.read()
10 print(analogVal)
11 sleep(1)
Related Tutorial Videos
