i3Wifi
Minimal ESP8266 arduino sketch to function as Wifi adapter for Wanhao Duplicator i3 Mini 'WIFI' UART port.
Mainboard: i3Mini V1.3 WH
WIFI (J1) pinout: (near board edge) GND RX TX VCC (5v)
Untested.
Early performance test, no flow control, no SD write (Wifi -> Protocol [1] -> UART only)
6441899b/100s = 64.41899 kBps
Source gcode was 5850962b - protocol space overhead ~10.1%
Required Marlin configuration:
SERIAL_XON_XOFF
BAUD_RATE_GCODE
[1] Protocol stages:
- Minify - Strip whitespace, comments, & empty lines
- MinDigits - Strip trailing zeros from numbers - 3.4000 - 3.4
- Checksum - Add line number & checksum - Line number is capped at 9 to minimise protocol overhead
- RingBuffer - Buffered into a circular queue for transmission