Add initial TeleMini v3 docs

Uses pictures of the prototype.

Signed-off-by: Keith Packard <keithp@keithp.com>

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+== TeleMini
+
+	.TeleMini v3 Board
+	image::telemini-v3.jpg[width="5.5in"]
+
+	TeleMini v3 is 0.5 inches by 1.67 inches.  It was
+	designed to fit inside an 18mm air-frame tube, but using it in
+	a tube that small in diameter may require some creativity in
+	mounting and wiring to succeed!  Since there is no
+	accelerometer, TeleMini can be mounted in any convenient
+	orientation.  The default ¼ wave UHF wire antenna attached to
+	the center of one end of the board is about 7 inches long. Screw
+	terminals for the power switch are located in the
+	middle of the board. Screw terminals for the e-matches for
+	apogee and main ejection charges depart from the other end of
+	the board, meaning an ideal “simple” avionics bay for TeleMini
+	should have at least 9 inches of interior length.
+
+      	=== TeleMini v3 Screw Terminals
+
+		TeleMini v3 has four screw terminals on the end of the
+		board opposite the telemetry antenna. Two are for the apogee
+		and two are for main igniter circuits. Another two
+		screw terminals are located in the middle of the board
+		for the power switch.  Using the
+		picture above and starting from the top for the pyro terminals
+		and from the left for the power switch terminals, the
+		connections are as follows:
+
+		.TeleMini v3 Screw Terminals
+		[options="header",grid="all",cols="2,3,10"]
+		|====
+		|Terminal #|Terminal Name|Description
+
+		|1
+		|Apogee -
+		|Apogee pyro channel connection to pyro circuit
+
+		|2
+		|Apogee +
+		|Apogee pyro channel common connection to battery +
+
+		|3
+		|Main -
+		|Main pyro channel connection to pyro circuit
+
+		|4
+		|Main +
+		|Main pyro channel common connection to battery +
+
+		|Left
+		|Switch Output
+		|Switch connection to flight computer
+
+		|Right
+		|Switch Input
+		|Switch connection to positive battery terminal
+		|====
+
+      	=== Using a Separate Pyro Battery with TeleMini v3
+
+		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. Because
+		there is no solid ground connection to use on TeleMini, this
+		is not recommended.
+
+		The only available ground connection on TeleMini v3 are
+		the two mounting holes next to the telemetry
+		antenna. Somehow connect a small piece of wire to one of
+		those holes and hook it to the negative pyro battery terminal.
+
+		Connecting the positive battery terminal to the pyro
+		charges must be done separate from TeleMini v3, 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 (terminal 3 for the
+		Main charge, terminal 1 for the Apogee charge).
+
+      	=== Using an Active Switch with TeleMini v3
+
+		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. Again,
+		because TeleMini doesn't have any good ground connection,
+		this is not recommended.
+
+		The positive battery terminal is available on the Right
+		power switch wire, the positive flight computer input is on
+		the left power switch wire. Hook a lead to either of the
+		mounting holes for a ground connection.
+
+	=== TeleMini v1
+
+		TeleMini v1 is the earlier version of this product. It
+		has a lower-power radio, less storage, no beeper and
+		soldered-in wires instead of screw terminals for the
+		power switch.
+
+		.TeleMini v1 Board
+		image::telemini-v1-top.jpg[width="5.5in"]
+