3 The first thing to do after you open the box is to hook up a
4 battery and charge it if necessary.
8 ifdef::telemetrum,telemega,easymega[]
9 For TeleMetrum, TeleMega and EasyMega, the battery can be charged by plugging it into the
10 corresponding socket of the device and then using the USB
11 cable to plug the flight computer into your computer's USB socket. The
12 on-board circuitry will charge the battery whenever it is plugged
13 in, because the on-off switch does NOT control the
15 endif::telemetrum,telemega,easymega[]
17 ifdef::telemini[TeleMini and]
18 EasyMini battery can be charged by disconnecting it
19 from the board and plugging it into a standalone
20 battery charger such as link:http://altusmetrum.org/LipoCharger[LipoCharger], and
21 connecting that via a USB cable to a laptop or other
24 You can also choose to use another battery with
25 EasyMini, anything supplying between 4 and 12 volts should
26 work fine (like a standard 9V battery), but if you are planning
27 to fire pyro charges, ground testing is required to verify that
28 the battery supplies enough current to fire your chosen e-matches.
30 ifdef::telemetrum,telemega,easymega[]
33 On TeleMetrum v1 boards, when the GPS chip is initially
34 searching for satellites, TeleMetrum will consume more current
35 than it pulls from the USB port, so the battery must be
36 attached in order to get satellite lock. Once GPS is locked,
37 the current consumption goes back down enough to enable charging
38 while running. So it's a good idea to fully charge the battery
39 as your first item of business so there is no issue getting and
40 maintaining satellite lock. The yellow charge indicator led
41 will go out when the battery is nearly full and the charger goes
42 to trickle charge. It can take several hours to fully recharge a
43 deeply discharged battery.
45 TeleMetrum v2.0, TeleMega and EasyMega use a higher power battery charger,
46 allowing them to charge the battery while running the board at
47 maximum power. When the battery is charging, or when the board
48 is consuming a lot of power, the red LED will be lit. When the
49 battery is fully charged, the green LED will be lit. When the
50 battery is damaged or missing, both LEDs will be lit, which
53 endif::telemetrum,telemega,easymega[]
56 === Ground Station Hardware
58 There are two ground stations available, the TeleDongle USB to
59 RF interface and the TeleBT Bluetooth/USB to RF interface. If
60 you plug either of these in to your Mac or Linux computer it should
61 “just work”, showing up as a serial port device. Windows systems need
62 driver information that is part of the AltOS download to know that the
63 existing USB modem driver will work. We therefore recommend installing
64 our software before plugging in TeleDongle if you are using a Windows
65 computer. If you are using an older version of Linux and are having
66 problems, try moving to a fresher kernel (2.6.33 or
70 === Linux/Mac/Windows Ground Station Software
72 Next you should obtain and install the AltOS software.
73 The AltOS distribution includes the AltosUI ground
74 station program, current firmware images for all of
75 the hardware, and a number of standalone utilities
76 that are rarely needed. Pre-built binary packages are
77 available for Linux, Microsoft Windows, Mac OSX. Full
78 source code and build instructions are also
79 available. The latest version may always be downloaded
80 from http://altusmetrum.org/AltOS
83 === Android Ground Station Software
85 TeleBT can also connect to an Android device over
87 link:https://play.google.com/store/apps/details?id=org.altusmetrum.AltosDroid[AltosDroid
88 Android application] is available from the
89 link:https://play.google.com[Google Play system].
91 You don't need a data plan to use AltosDroid, but
92 without network access, you'll want to download
93 offline map data before wandering away from the