{"id":6301,"date":"2020-06-09T08:59:18","date_gmt":"2020-06-09T14:59:18","guid":{"rendered":"http:\/\/gregsowell.com\/?p=6301"},"modified":"2020-06-09T08:59:18","modified_gmt":"2020-06-09T14:59:18","slug":"esp8266-wemos-to-control-ws2812-neopixels","status":"publish","type":"post","link":"https:\/\/gregsowell.com\/?p=6301","title":{"rendered":"ESP8266 Wemos To Control WS2812 Neopixels"},"content":{"rendered":"

\"\"<\/a>
\n\"\"<\/a><\/p>\n

First a big shout out to this link<\/a>, which provided me the tools to get started.<\/p>\n

The instructions there under requirements give you the first steps. First you add the ESP8266 file uploader plugin to the Arduino IDE<\/a>. This allows you to add new files the webserver can utilize.<\/p>\n

Next you need to install the awesome WebSockets library.
\nType Ctl+shift+i. This pulls up the library manager. From here you type websockets and choose ArduinoWebsockets by Gil Maimon.
\n\"\"<\/a><\/p>\n

Next you need to grab the FastLed library from the library manager just like above.<\/p>\n

Add the ESP8266 package from the library manager.<\/p>\n

Now grab the code from here<\/a>. This is a great set of webserver files that are uploaded with the ESP8266 uploader and the ardunio sketches to be modified and uploaded.<\/p>\n

Now open the ESP-8266.ino arduino IDE file found in the above github. First issue I hit was that I needed to change the flash size of my esp8266 in the IDE. So I choose generic ESP8266, then set the flash size as shown, and last clicked upload. This will get the webserver files in place.
\n\"\"<\/a><\/p>\n

Once the files are uploaded you should modify the IP address, wifi, pixel count, and pixel control pin info.
\n\"\"<\/a><\/p>\n

If you are controlling more than 255 LEDs like me, you have to modify the code, otherwise it will crash on you. In the led_effects.ino file, several variables are defined as uint8_t format which is an 8 bit number, which means it maxes out at 255. I modified the following:<\/p>\n

\/\/these are all towards the top\r\n\/\/uint8_t idex = 0; \/\/\u0438\u043d\u0434\u0435\u043a\u0441 \u0442\u0435\u043a\u0443\u0449\u0435\u0433\u043e \u043f\u0438\u043a\u0441\u0435\u043b\u044f    \r\nuint16_t idex = 0; \/\/\u0438\u043d\u0434\u0435\u043a\u0441 \u0442\u0435\u043a\u0443\u0449\u0435\u0433\u043e \u043f\u0438\u043a\u0441\u0435\u043b\u044f    \r\n\/\/uint16_t TOP_INDEX = uint8_t(LED_COUNT \/ 2); \/\/ \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u043c \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0443 \u043b\u0435\u043d\u0442\u044b\r\nuint16_t TOP_INDEX = LED_COUNT \/ 2; \/\/ find the middle\r\n\r\n\/\/  for(uint8_t i = 0 ; i < LED_COUNT; i++ ){\r\n  for(uint16_t i = 0 ; i < LED_COUNT; i++ ){<\/code><\/pre>\n
\"\"<\/a>
\nAs you can see I changed then from 8 bit to 16 bit numbers which allows for 65k pixels…way more than this little micro can reasonably control.<\/p>\n
Good luck and happy lighting.  <\/p>\n","protected":false},"excerpt":{"rendered":"
First a big shout out to this link, which provided me the tools to get started. The instructions there under requirements give you the\u2026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45,28],"tags":[],"class_list":["post-6301","post","type-post","status-publish","format-standard","hentry","category-arduino","category-fun"],"_links":{"self":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/6301","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6301"}],"version-history":[{"count":7,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/6301\/revisions"}],"predecessor-version":[{"id":6314,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/6301\/revisions\/6314"}],"wp:attachment":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6301"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}