Expected behavior

During firmware configuration
Should be easy to select the value for LUA_FLASH_STORE in user_config.h
Options and/or units should be clearly documented so that the setting can be used.

Actual behavior

current default setting is:
//#define LUA_FLASH_STORE 0x10000

Comments

0x10000 corresponds to 64kb in hex, What are the other possibl

I'll get this added to the documentation shortly, but in the meantime here is a list of some relevant issues and comments which I'll use for it:

SmingHub/Sming#1992 (comment)
SmingHub/Sming#1724 (comment)
#2002

Is your feature request related to a problem? Please describe.
Some emulators (NES, PCE, Lynx) have a menu that opens when pressing the Volume button (🔈 symbol, to the right of the Menu button), which is great!
Other emulators (GB, GBC) just turn the sound on and off, which is also acceptable, and you can change the volume by holding the Volume button and pressing up or down.
But th

为了更好的帮助大家，也为了更好的记录自己遇到的问题，建议大家将自己遇到的问题并解决完的问题可以记录在这个issue中，与人方便，与己方便，希望大家可以认真的记录问题并描述是如何解决的，谢谢大家合作，您的每一次记录都会对他人有所帮助哦~

PS:未解决完的问题，先不要记录哦~mua!(*╯3╰)

比如-Example

遇到的问题
上电串口助手查看打印乱码。
(可以附加图片)

解决办法
波特率设置不对，ESP8266默认波特率是76800，更改波特率后打印正常。
(可以附加图片)

Document wiring mod required for SD Card support.

The Marauder firmware now supports an SD Card. I need to document the wiring required to get full hardware support for the SD Card slot on the 2.8" TFT Shield for those who have a marauder of hardware revision 3 or older.

I'm not that familiar with platformio, so I would like more explicit installation instructions -- should I be adding the contents of this repo to ~/.platformio/packages/framework-espidf/components/esp-mqtt?

IDE: Arduino IDE 1.8.5
Unusual installation path: C:\Program Files (x86)\Arduino
Sketchbook location: B:\Arduino-Dev
ESP32 installation path: B:\Arduino-Dev\hardware\espressif\esp32
OS: Windows 7 Home Premium Service Pack 1 64-bit

First tried download ZIP file:

• download ESP32Partitions.zip into C:\Program Files (x86)\Arduino\tools
• extract content into