4: Open-QTM 410 Carrier Board
Open-Q 410 Dev Kit User Guide
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4.2 Buttons and LEDs
There are three buttons on the Carrier Board: Power On/Off, Volume Up and Volume Down. There are also
eight LEDs: Power indicator, User LEDs #1 – 4, WLAN activity, BT activity, and charging status. The positions
of the buttons and LEDs are shown in the figure above.
4.3 Power and Battery Connections
The main power input barrel connector (J201) is located on the top side of Carrier Board, as shown below.
The main power input requires a 10-16VDC supply rated for at least 3A. Lantronix encourages using the
12VDC / 3A power supply provided with the kit. The main power input is protected by a very fast acting 5A
rated fuse. J201 is a center pin positive, 2.5mm barrel jack.
Figure 7 – Power Input Jack
There also exists a 6-pin battery input header on the bottom side of the PCB at J1202, as shown below. If the
user would like to use this header, the following must be done:
•
Remove resistors R207 and R209. This will disable the on-board 3.7V buck power supply and allow
the battery header to drive this power rail to the SOM.
•
Connect a single cell Lithium battery to J1202 (see pinout details below).
•
Remove R1214 in order to enable the linear battery charger on the SOM.
•
See figure below for respective resistors and connector location
