https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=Category%3ANodeMCUCategory:NodeMCU - Revision history2026-06-04T22:59:03ZRevision history for this page on the wikiMediaWiki 1.37.2https://w.electrodragon.com/w/index.php?title=Category:NodeMCU&diff=28044&oldid=prevChao at 07:31, 17 September 20202020-09-17T07:31:07Z<p></p>
<p><b>New page</b></p><div>== Upload Sketch ==<br />
For nodemcu to upload sketch (old)<br />
* Use script interpreter LUA as embedded system programming<br />
* open Nodemcu flasher/esp download tool/esptool.py to upload this firmware, more details see here, [http://www.electrodragon.com/esp8266-flash-firmware/ see some guidelines here]<br /><br />
* Restart module and upload lua scripts: LEDBlink.lua, init.lua, mqtt2.lua<br />
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== Quick Start Guide for Lua ==<br />
* If you prefer to use lua script, [[:File:Nodemcu_20150704_firmware.zip|you can download 2015 stable firmware version here.]]<br />
* [https://github.com/nodemcu/nodemcu-firmware/releases Or find the latest release on nodemcu github here.]<br />
* IDE can use lualoader [[:File:LuaLoader.zip|(here is 0.91 version)]] or esplorer. <br />
* Send commands, = node.chipid() to get chip ID, or = node.heap() to test.<br />
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* [https://github.com/Edragon/esp_firmware A few more pre-build firmware can be found here]<br />
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== Quick Start ==<br />
=== Testing (LUA commands) ===<br />
[[File:LUA command hello.jpg|thumbnail]]<br />
* Connect the board and run node.restart() commands to see the reboot info<br />
NodeMCU 0.9.6 build 20150406 powered by Lua 5.1.4<br />
lua: cannot open init.lua<br />
* Using any Serial tool, send interactive commands, should have following reply: <br />
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print("hello world")<br />
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=== Startup lua file init.lua===<br />
* New flashed board has no any script inside<br />
* when module bootup successfully, it will run lua code file '''init.lua''' in default<br />
* if we want to run a custom lua code file, we can add dofile("yourfile.lua") into init.lua to let the board do so<br />
* example code hello world<br />
<pre><br />
file.open("init.lua","w+")<br />
file.writeline([[print("hello world")]])<br />
file.writeline([[dofile("yourfile.lua")]])<br />
file.close()<br />
</pre><br />
<gallery><br />
File:Init-lua_default.jpg|luaļ¼cannot open init.lua<br />
File:Init-lua_default2.jpg| add code to init.lua<br />
File:Init-lua_default3.jpg| running hello world<br />
</gallery><br />
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== Relevant Topics ==<br />
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Doc page<br />
* [http://www.nodemcu.com/docs/ NodeMCU Docs]<br />
Git page<br />
* [https://github.com/nodemcu Offcial NodeMCU github] <br />
* [https://github.com/nodemcu/nodemcu-firmware NodeMCU Github page]<br />
Hardware page<br />
* [[ESP8266 NodeMCU Dev Board]] <br />
Firmware build<br />
* Use ESP Open SDK to build nodemcu - [[ESP8266 Open SDK]]<br />
* [http://nodemcu-build.com/ NodeMCU dev custom firmware online build]<br />
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== Documents ==<br />
* [[ESP8266 NodeMCU Lua]]<br />
Modules <br />
* Third party DHT22 modules: https://github.com/javieryanez/nodemcu-modules/tree/master/dht22<br />
Useful link<br />
* [https://github.com/nodemcu/nodemcu-firmware Nodemcu github page]<br />
* [https://github.com/nodemcu/nodemcu-firmware/releases Nodemcu firmware release (0.96 currently)]<br />
* [https://github.com/4refr0nt/ESPlorer ESPlorer GUI]<br />
* [https://github.com/nodemcu/nodemcu-flasher Windows flash tool - nodeMCU flasher]<br />
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== Obselete ==<br />
* Updated info can be found at [http://bbs.nodemcu.com bbs.nodemcu.com]<br />
Module and library<br />
* U8G - display 128x64 OLED, example lua in nodemcu folder "nodemcu-firmware/lua_examples/u8glib/u8g_graphics_test.lua"<br />
* DHT22 - [http://nodemcu.readthedocs.io/en/master/en/modules/dht/ example avaialble]<br />
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[[category:ESP8266 Firmware]]</div>Chao