The Terra board is a complete hardware solution for evaluating the Aria G25 embedded Linux module. Its schematics can be used as a reliable reference design for your own projects, or you can use it to make small productions of end-user embedded Linux devices.
The lower picture shows the Terra board with a GPRS modem, SIM card slot and SMA antenna connector. These components come installed when you select the GPRS Module option at the bottom of this page.
Terra Embedded Linux Board Features
You can monitor the Aria G25 CPU module's Linux console by plugging in a DPI TTL-to-USB converter.
- Area G25 SoM with ARM9 CPU @ 400 MHz and 256 MB RAM
- Three USB 2.0 Host ports: Two High-Speed and one Full-Speed
- Separate power supply control on each USB port
- microSD card slot used for booting Linux (no OS or card is included)
- 10/100 Ethernet LAN port, RJ45
- Seven box headers for adding various Daisy modules
- Barrel jack power input, 9V to 28V DC
- Real-Time Clock backup battery holder (accepts CR1220)
- Pads for adding Quectel M95 quad-band GPRS module (see options below)
- Pads for SIM card slot (populated when GPRS Module option is selected)
- Pads for SMA antenna connector (populated when GPRS Module option is selected)
- Pads/slots for adding DAISY-24 front-panel 16×2 LCD and pushbuttons module
- Pads for adding 1-Wire Temperature Sensor (e.g. DS18B20 or DS18S20+).
- Additional extension headers
- Dimensions: 10 × 10 cm
If you don't select the GPRS module, there are pads available for you to install an eighth DAISY header (not included).
LCD, Buttons, and Case Options The picture below shows how the DAISY-24 LCD/Buttons module plugs into the Terra board. (Alternatively, it can connect via cable to one of the Daisy headers.) The second picture then shows the system installed in the TERRACASE.
Basic Startup Guide First, you'll need to create a bootable microSD card (download the instructions plus the kernel/roofs zip file from the Resources section below). Insert the bootable Linux microSD card into the Terra, plug in the Ethernet cable, then the power supply.
The board has no power switch, so it will power up immediately. The LEDs labeled 5V and 3V3 should light up. If you're using the DPI, you will see the boot sequence on your terminal emulator.
After about one second, the green LED on the Aria CPU module will begin to blink in a "short on, short on, pause" sequence. This indicates that the Linux kernel is loading. If it does not blink, then the microSD card is not inserted properly or there isn't a valid Linux kernel image on it.
After about 30 seconds, Linux will have started and you can reach it via LAN. The Terra board gets its IP address from your LAN's DHCP server (use a utility like Angry IP Scanner to discover what IP address was assigned). Using the IP address, you can communicate with the Terra board via a web browser, an SSH client, an SCP client, or a serial terminal emulator (if you have the DPI module).
Log in as root with the password ariag25.
A fully working Lighttpd web server and a PHP interpreter come pre-installed on the board.
Terra Board Resources
Optional Recommended Products for this Item
|Black Aluminum Case for TERRA G25 Board||+|| US$58.00|
|Quad-band Cellular Duck Antenna, SMA||+|| US$7.95|
|Quad-band Cellular 9" Antenna SMA||+|| US$9.95|
|Quad-band Wired Cellular Antenna, SMA Connector||+|| US$11.95|
|2x5 (10-pin) 0.05" pitch IDC Connector Flat Ribbon Cable, 20cm||+|| US$2.60|
|Ethernet Cable, CAT5E 350MHz Unshielded, 7ft.||+|| US$3.60|
|Ethernet Crossover Cable, CAT5E 350MHz Unshielded, 5ft.||+|| US$7.00|
|USB 2.0 Cable, 6ft., A-Male / B-Male||+|| US$6.00|
|USB 2.0 Cable, 6ft. A-Male / Mini-USB (5-pin) B-Male||+|| US$6.00|
|USB 2.0 Cable, 6ft. A-Male / Micro-USB (5-pin) B-Male||+|| US$6.00|
|Power Supply 3-12V DC, U.S. plug, 6 connection tips||+|| US$11.00|
|Power Supply 3-12V DC, US/UK/Euro/AU Plugs, 100-240VAC||+|| US$13.00|