Note!  Only for board version 3.x 
        Check PCB board for version.

Important!

Use 10A fuse for battery circuit, Check Polarity
Note! Wrong battery polarity will damage the unit.

This is a very advanced charge controller mainly targeted for
experts and research. There are numrious settings and monitoring
and debugging options availble via software. Please be aware that 
incorrect settings may damage your batteries and also the charge 
controller.

Connections

	Screw Terminal at Front.  From Left to Right:

1	1 + LOAD (your computer etc)
	2 GND 
	3 GND 
	4 GND
	5 + Battery 12V
	6 + PWR IN2 DC.  Solar Panel  Max 20. AC Adapter.
	7 GND
	8 + PWR IN1 DC.  Solar Panel  Max 20. AC Adapter.
	    	    Recommended input from AC-adapter 15 Volt
                    Recommended input from Solar Panel 20 Volt

2	2 x 3-Pin header connector for OneWire DS18B20 Temperature Sensors
	Note power is one pin. 

3	Mini-USB connector at front for serial communication

4	4-Pin USB header for serial comm.

5	6-Pin header connector for TTL to USB cable. Note 
	GND (black) marking

6	JTAG progamming/debugging 2x5 Pin header. For factory use only.

7	10-Pin AUX header for LCD etc.


PWR IN1 and PWR IN2 are inputs to the controller and
both inputs goes through a schottky diode to prevent
reverse leakage current.


Indicators

	Led Red
	Led Yellow
	Indicates battery condition and charging process. 
	Voltage In > Voltage Battery with fast blinking LED's


Serial Port 38400 Bps 1 stop bit no parity.  tty_talk can be used 
for data collection over USB to host. See example script for Linux. 
Also note API for queering data over USB.

Serial port is also used for firmware upgrades.