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| diff --git a/doc/easymega.inc b/doc/easymega.inc new file mode 100644 index 00000000..c126004b --- /dev/null +++ b/doc/easymega.inc @@ -0,0 +1,123 @@ +== EasyMega + +	.EasyMega Board +	image::easymega-v1.0-top.jpg[width="4.5in"] + +	EasyMega is a 1¼ inch by 2¼ inch circuit board. It was +	designed to easily fit in a 38mm coupler. Like TeleMetrum, +	EasyMega has an accelerometer and so it must be mounted so that +	the board is aligned with the flight axis. It can be mounted +	either antenna up or down. + +	=== EasyMega Screw Terminals + +		EasyMega has two sets of nine screw terminals on the end of +		the board opposite the telemetry antenna. They are as follows: + +		.EasyMega Screw Terminals +		[options="header",grid="all",cols="2,3,10"] +		|==== +		|Terminal #|Terminal Name|Description + +		|Top 1 +		|Switch Input +		|Switch connection to positive battery terminal + +		|Top 2 +		|Switch Output +		|Switch connection to flight computer + +		|Top 3 +		|GND +		|Ground connection for use with external active switch + +		|Top 4 +		|Main - +		|Main pyro channel connection to pyro circuit + +		|Top 5 +		|Main + +		|Main pyro channel common connection to battery + + +		|Top 6 +		|Apogee - +		|Apogee pyro channel connection to pyro circuit + +		|Top 7 +		|Apogee + +		|Apogee pyro channel common connection to battery + + +		|Top 8 +		|D - +		|D pyro channel connection to pyro circuit + +		|Top 9 +		|D + +		|D pyro channel common connection to battery + + +		|Bottom 1 +		|GND +		|Ground connection for negative pyro battery terminal + +		|Bottom 2 +		|Pyro +		|Positive pyro battery terminal + +		|Bottom 3 +		|Lipo +		|Power switch output. Use to connect main battery to pyro battery input + +		|Bottom 4 +		|A - +		|A pyro channel connection to pyro circuit + +		|Bottom 5 +		|A + +		|A pyro channel common connection to battery + + +		|Bottom 6 +		|B - +		|B pyro channel connection to pyro circuit + +		|Bottom 7 +		|B + +		|B pyro channel common connection to battery + + +		|Bottom 8 +		|C - +		|C pyro channel connection to pyro circuit + +		|Bottom 9 +		|C + +		|C pyro channel common connection to battery + +		|==== + +	=== Using a Separate Pyro Battery with EasyMega + +		EasyMega provides explicit support for an external pyro +		battery. All that is required is to remove the jumper +		between the lipo terminal (Bottom 3) and the pyro terminal +		(Bottom 2). Then hook the negative pyro battery terminal to ground +		(Bottom 1) and the positive pyro battery to the pyro battery +		input (Bottom 2). You can then use the existing pyro screw +		terminals to hook up all of the pyro charges. + +      	=== Using Only One Battery With EasyMega + +		Because EasyMega has built-in support for a separate pyro +		battery, if you want to fly with just one battery running +		both the computer and firing the charges, you need to +		connect the flight computer battery to the pyro +		circuit. EasyMega has two screw terminals for this—hook a +		wire from the Lipo terminal (Bottom 3) to the Pyro terminal +		(Bottom 2). + +      	=== Using an Active Switch with EasyMega + +		As explained above, an external active switch requires three +		connections, one to the positive battery terminal, one to +		the flight computer positive input and one to ground. + +		The positive battery terminal is available on Top terminal +		1, the positive flight computer input is on Top terminal +		2. Ground is on Top terminal 3. | 
