Fix arduino "exec: "cmd": executable file not found in %PATH% "

compiling code with Arduino IDE. I get a error "exec: "cmd": executable file not found in %PATH% "

PATH add %SystemRoot%\system32;%SystemRoot%;C:\Windows\System32;

How to use NodeMCU-32S Lua (ESP32) serial2 port (UART)

 NodeMCU-32S Lua have 3 UART. serial0 ,serial1, serial2.

serial	RX	TX
0	GPIO3	GPIO1
1	GPIO9	GPIO10
2	GPIO16	GPIO17

If ESP32 connect USB,only serial2 can work.

Pronterface could not connect to 3D printing "could not open port"

when we want to pc connect to 3D printing with Pronterface, but  Pronterface could not connect to 3D printing and show " could not open port" error. How to solve ?

QSslSocket: cannot call unresolved function SSLv23_client_method

QSslSocket: cannot call unresolved function SSLv23_client_method

QSslSocket: cannot call unresolved function SSL_CTX_new

QSslSocket: cannot call unresolved function SSL_library_init

QSslSocket: cannot call unresolved function ERR_get_error

QT QMYSQL driver not loaded

QT error messages:

QSqlDatabase: QMYSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7

download MySQL connector  libmysql.dll to compiler bin Folder

Exemple:

X:\Qt\5.10.1\mingw53_32\bin

Attention!

• If your compiler is 32 bit,download 32 bit.
• Attention which compiler.

Qt for Windows exe - Deployment

1.Change mode to "Release" and run

Node.js Tools and Visual Studio

https://github.com/Microsoft/nodejstools