4 image::telemini-v3.0-top.jpg[width="5.5in"]
5 image::telemini-v3.0-bottom.jpg[width="5.5in"]
7 TeleMini v3 is 0.5 inches by 1.67 inches. It was
8 designed to fit inside an 18mm air-frame tube, but using it in
9 a tube that small in diameter may require some creativity in
10 mounting and wiring to succeed! Since there is no
11 accelerometer, TeleMini can be mounted in any convenient
12 orientation. The default ¼ wave UHF wire antenna attached to
13 the center of one end of the board is about 7 inches long. Screw
14 terminals for the power switch are located in the
15 middle of the board. Screw terminals for the e-matches for
16 apogee and main ejection charges depart from the other end of
17 the board, meaning an ideal “simple” avionics bay for TeleMini
18 should have at least 9 inches of interior length.
20 === TeleMini v3 Screw Terminals
22 TeleMini v3 has four screw terminals on the end of the
23 board opposite the telemetry antenna. Two are for the apogee
24 and two are for main igniter circuits. Another two
25 screw terminals are located in the middle of the board
26 for the power switch. Using the
27 picture above and starting from the top for the pyro terminals
28 and from the left for the power switch terminals, the
29 connections are as follows:
31 .TeleMini v3 Screw Terminals
32 [options="header",grid="all",cols="2,3,10"]
34 |Terminal #|Terminal Name|Description
38 |Apogee pyro channel connection to pyro circuit
42 |Apogee pyro channel common connection to battery +
46 |Main pyro channel connection to pyro circuit
50 |Main pyro channel common connection to battery +
54 |Switch connection to flight computer
58 |Switch connection to positive battery terminal
61 === Using a Separate Pyro Battery with TeleMini v3
63 As described above, using an external pyro battery involves
64 connecting the negative battery terminal to the flight
65 computer ground, connecting the positive battery terminal to
66 one of the igniter leads and connecting the other igniter
67 lead to the per-channel pyro circuit connection. Because
68 there is no solid ground connection to use on TeleMini, this
71 The only available ground connection on TeleMini v3 are
72 the two mounting holes next to the telemetry
73 antenna. Somehow connect a small piece of wire to one of
74 those holes and hook it to the negative pyro battery terminal.
76 Connecting the positive battery terminal to the pyro
77 charges must be done separate from TeleMini v3, by soldering
78 them together or using some other connector.
80 The other lead from each pyro charge is then inserted into
81 the appropriate per-pyro channel screw terminal (terminal 3 for the
82 Main charge, terminal 1 for the Apogee charge).
84 === Using an Active Switch with TeleMini v3
86 As explained above, an external active switch requires three
87 connections, one to the positive battery terminal, one to
88 the flight computer positive input and one to ground. Again,
89 because TeleMini doesn't have any good ground connection,
90 this is not recommended.
92 The positive battery terminal is available on the Right
93 power switch wire, the positive flight computer input is on
94 the left power switch wire. Hook a lead to either of the
95 mounting holes for a ground connection.
99 TeleMini v1 is the earlier version of this product. It
100 has a lower-power radio, less storage, no beeper and
101 soldered-in wires instead of screw terminals for the
105 image::telemini-v1-top.jpg[width="5.5in"]