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## Comparison Espressif ESP MCUs.md

      
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                sekcompsci
                / Comparison Espressif ESP MCUs.md
            
            
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              June 18, 2021 03:56
                — forked from fabianoriccardi/Comparison Espressif ESP MCUs.md
            
              
                Comparison table for ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6
              
          
    Comparison table for ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6

A minimal table to compare the Espressif's MCU families.


ESP8266
ESP32
ESP32-S2
ESP32-S3
ESP32-C3
ESP32-C6


Announcement Date
2014, August
2016, September
2019, September
2020, December


## Atkinson dither in PHP
<?php

$img = imagecreatefromjpeg('./delayclose.jpg');
imagefilter($img, IMG_FILTER_GRAYSCALE);
$width = imagesx($img);
$height = imagesy($img);
$img_arr = array();

// Parse image (can be combined with dither stage, but combining them is slower.)
	<?php

	$img = imagecreatefromjpeg('./delayclose.jpg');
	imagefilter($img, IMG_FILTER_GRAYSCALE);
	$width = imagesx($img);
	$height = imagesy($img);
	$img_arr = array();

	// Parse image (can be combined with dither stage, but combining them is slower.)