/* GS/3 "Chimera"
Electronic "Paddle" and profile replay control application for La Marzocco GS/3 AV

This software and associated Arduino based hardware converts a GS/3 into a powerful pressure 
profiling machine. Furthermore it can mimic (hence "Chimera") all sorts of machines, such as 
Slayer like slow preinfusion and abrupt pressure change, etc.

New versions can be downloaded from https://github.com/alitai/GS3-Transformer

Modes supported:
	Manual (virtual) Paddle - based on potentiometer
	Flow profile replay
	Pump voltage (PWM) profile replay
 	Pressure profile replay
	Union Profile (FP preinfusion and PP handoff)

Chimera modes: 
	Slayer Pull 
	Strada EP Pull 
	Strada MP Pull
	
Technical capabilities:
	Can connect to 3d5 for pass through control (using a serial connection)
	Can identify cleaning cycles (if using serial connection)
	Profiles & system parameters stored on EEPROM
	Extensive menu system
	Potentiometer for paddle control; also used to modify parameters
	Full graphing of all parameter data and pull data
	Dashboard shows instant by instant parameters such as flow, pressure and motor current
	FIFO based smoothing
	Interrupt based start of pull
	Time based calculation of flow for enhanced resolution and accuracy
			
Hardware:
	Runs on an Arduino mega 2560 with a prototype shield 
	Display from Adafruit with a touch panel, 
	Pololu VNH5019 powerful motor driver breakout PCB
	Pressure sensor + amplification
	Flowmeter connection (with optocoupler isolation)
	3-way connection
	Optional connection to the 3d5 using a serial cable. 
		See 3d5_serial_interface.ino for details.
	Medium orifice metering valve
	MG204 gear pump from FOT
	Fittings
	Red & Green Status LEDs
	
v0.27
	Added Nicolas' support for HM10 BT breakout board and Acaia Lunar scale
	Added weight, dose and EBF support
	
v0.30
	Removed Motor Current
	Condensed Dashboard view
	Enlarged graph view
	
v0.33
	Added support for Otto Controls HTWF Hall Effect control paddle with center indent aligned to FLB threshold (PI until center indent, main pull beyond it)

v0.34
	Added color variable support
	Corrected some Acaia Lunar support enable/disable issues
	Added support for ITEAD and other non Adafruit displays (larger, but the displays aren't of similar quality)
	Corrected Flush behavior
	
v0.35
	Corrected some bad pumpPWM casting
	
v0.36
	Added Combo mode 7: Slayer like PI and subsequent Pressure Profile... SLAYER_LIKE_PI_PRESSURE_PROFILE
	
v0.37
	configuration file
	
v0.38
	Refactored shutdown sequences
	Refactored flush sequences
	Added optional MQTT support
	Removed non-Serial support (should be replaced with defaults)
	Moved parameter manipulation to Serial port & ESP8266 Telnet port
	Removed parameter manipulation from UI
	Removed debug code
	
v0.39
	Added SINGLE_PUMP mode (per TH)
	Store PWM as Int (no more byte casting)
	
v0.40
	Added telemetry (Megunolink)
	
v0.41
	Added FLOW_PRESSURE_PROFILE mode - FP: PID Flow (left side of paddle) up to unionThreshold. Then PP PID Pressure (right side of paddle)
	
v0.42
	Bugfixes and refactoring

v0.43
	Corrected a situation where pull would stall and the ml/min would remain stuck
	
v0.44
	Added a directive to enable/disable sleep AUTO_SLEEP

*/