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Embedded blog Maker builds a DIY embedded Linux computer
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Maker builds a DIY embedded Linux computer

Artie Beavis
Artie Beavis
April 16, 2015

When it comes to obtaining an embedded Linux devices like the Raspberry Pi and BeagleBone for a project, most Makers would simply head online and purchase one. That is unless you’re “hak8or,” who decided to produce his own uber mini board based on an Atmel SMART AT91SAM9N12 that runs Linux off of a USB drive.

The uber mini board


Uber mini board

Inspired by Henrik Forstén’s recent device, hak8or’s system measures just two square inches in size, features 64 MB of DDR2 DRAM, a USB host and OTG port on-board.

uber mini board designed by Hak8or

“NAND Flash doesn’t work for some reason, so dataflash is used instead. The dataflash chip is attached to the SPI bus from the chip to the SPI bus pads while also using it’s own board. DRAM is also underclocked to 100 Mhz instead of 133 Mhz via the main system bus downclock, causing the processor to run at 300 Mhz instead of 400 Mhz. AT91 Bootstrap and U-Boot are located on dataflash at0x00 and 0x8400 respectivly, with U-Boot pulling the kernel from a flash drive connected via USB OTG as well. The kernel then pulls the rootfs off the flash drive in a dedicated ext2 rootfs as rw (read write). GCC has been cross compiled to this board and compiles programs correctly, so this board was used for completion of the project,” hak8or notes.

hak8or Brainy Linux

Those wishing to delve deeper can head over to the project’s Github page, where the Maker has provided an elaborate readme.md covering the boot process, the root filesystem and the toolchain. He also goes on to list a slew of useful resources for anyone looking to boot Linux on the chips.

Anonymous
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  • shahid
    Offline shahid over 7 years ago

    reaching for chip.

    i download component library in altium but i does not contain sam9n12

    i search in altium website but it does not have sam9n12

    https://designcontent.live.altium.com/#UnifiedComponentDetail/Atmel_Microcontroller_ARM/1

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  • shahid
    Offline shahid over 7 years ago

    reaching for chip.

    i download component library in altium but i does not contain sam9n12

    i search in altium website but it does not have sam9n12

    https://designcontent.live.altium.com/#UnifiedComponentDetail/Atmel_Microcontroller_ARM/1

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