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diff --git a/doc/easymini.inc b/doc/easymini.inc new file mode 100644 index 00000000..40cb3e1a --- /dev/null +++ b/doc/easymini.inc @@ -0,0 +1,86 @@ +== EasyMini + +	image::easymini-top.jpg[width="5.5in"] + +	EasyMini is built on a 0.8 inch by 1½ inch circuit board. It's +	designed to fit in a 24mm coupler tube. The connectors and +	screw terminals match TeleMini v2.0, so you can easily swap between +	EasyMini and TeleMini. + +	=== EasyMini Screw Terminals +	 +		EasyMini has two sets of four screw terminals on the end of the +		board opposite the telemetry antenna. Using the picture +		above, the top four have connections for the main pyro +		circuit and an external battery and the bottom four have +		connections for the apogee pyro circuit and the power +		switch. Counting from the left, the connections are as follows: + +		[options="header",grid="all",cols="2,3,10"] +		|==== +		|Terminal #|Terminal Name|Description +		|Top 1 +		|Main - +		|Main pyro channel connection to pyro circuit +	       +		|Top 2 +		|Main + +		|Main pyro channel common connection to battery + +	       +		|Top 3 +		|Battery + +		|Positive external battery terminal +	       +		|Top 4 +		|Battery - +		|Negative external battery terminal +	       +		|Bottom 1 +		|Apogee - +		|Apogee pyro channel connection to pyro circuit +	       +		|Bottom 2 +		|Apogee + +		|Apogee pyro channel common connection to battery + +	       +		|Bottom 3 +		|Switch Output +		|Switch connection to flight computer +	       +		|Bottom 4 +		|Switch Input +		|Switch connection to positive battery terminal +		|==== + +      	=== Using a Separate Pyro Battery with EasyMini +	 +		As described above, using an external pyro battery involves +		connecting the negative battery terminal to the flight +		computer ground, connecting the positive battery terminal to +		one of the igniter leads and connecting the other igniter +		lead to the per-channel pyro circuit connection. + +		To connect the negative pyro battery terminal to TeleMini +		ground, connect it to the negative external battery +		connection, top terminal 4. + +		Connecting the positive battery terminal to the pyro +		charges must be done separate from EasyMini, by soldering +		them together or using some other connector. + +		The other lead from each pyro charge is then inserted into +		the appropriate per-pyro channel screw terminal (top +		terminal 1 for the Main charge, bottom terminal 1 for the +		Apogee charge). + +      	=== Using an Active Switch with EasyMini +	 +		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. Use +		the negative external battery connection, top terminal 4 for +		ground. + +		The positive battery terminal is available on bottom +		terminal 4, the positive flight computer input is on the +		bottom terminal 3.  | 
