4 image::easymega-v1.0-top.jpg[width="4.5in"]
6 EasyMega is a 1¼ inch by 2¼ inch circuit board. It was
7 designed to easily fit in a 38mm coupler. Like TeleMetrum,
8 EasyMega has an accelerometer and so it must be mounted so that
9 the board is aligned with the flight axis. It can be mounted
10 either antenna up or down.
12 === EasyMega Screw Terminals
14 EasyMega has two sets of nine screw terminals on the end of
15 the board opposite the telemetry antenna. They are as follows:
17 [options="header",grid="all",cols="2,3,10"]
19 |Terminal #|Terminal Name|Description
23 |Switch connection to positive battery terminal
27 |Switch connection to flight computer
31 |Ground connection for use with external active switch
35 |Main pyro channel connection to pyro circuit
39 |Main pyro channel common connection to battery +
43 |Apogee pyro channel connection to pyro circuit
47 |Apogee pyro channel common connection to battery +
51 |D pyro channel connection to pyro circuit
55 |D pyro channel common connection to battery +
59 |Ground connection for negative pyro battery terminal
63 |Positive pyro battery terminal
67 |Power switch output. Use to connect main battery to pyro battery input
71 |A pyro channel connection to pyro circuit
75 |A pyro channel common connection to battery +
79 |B pyro channel connection to pyro circuit
83 |B pyro channel common connection to battery +
87 |C pyro channel connection to pyro circuit
91 |C pyro channel common connection to battery +
94 === Using a Separate Pyro Battery with EasyMega
96 EasyMega provides explicit support for an external pyro
97 battery. All that is required is to remove the jumper
98 between the lipo terminal (Bottom 3) and the pyro terminal
99 (Bottom 2). Then hook the negative pyro battery terminal to ground
100 (Bottom 1) and the positive pyro battery to the pyro battery
101 input (Bottom 2). You can then use the existing pyro screw
102 terminals to hook up all of the pyro charges.
104 === Using Only One Battery With EasyMega
106 Because EasyMega has built-in support for a separate pyro
107 battery, if you want to fly with just one battery running
108 both the computer and firing the charges, you need to
109 connect the flight computer battery to the pyro
110 circuit. EasyMega has two screw terminals for this—hook a
111 wire from the Lipo terminal (Bottom 3) to the Pyro terminal
114 === Using an Active Switch with EasyMega
116 As explained above, an external active switch requires three
117 connections, one to the positive battery terminal, one to
118 the flight computer positive input and one to ground.
120 The positive battery terminal is available on Top terminal
121 1, the positive flight computer input is on Top terminal
122 2. Ground is on Top terminal 3.