Didj Hacking: DJHI 2.8 preorder

The DJHI 2.8 is now available for preorder. The DHJI acts as an alternative serial connection in order to protect the Didj from the 12V signals it would be exposed to with a direct serial connection to your PC. It also adds in a microSD card slot and makes the connection process as simple as plugging it into the cartridge slot.

[The Moogle], who was the winner of our second Barcode Challenge, also tipped us off about his hack that upgrades the Didj to 64 Mb of RAM.

Comments

  1. NFN_NLN says:

    Don’t know anything about this but if it’s just a 12V to TTL why not use a MAX232? http://en.wikipedia.org/wiki/MAX232

  2. hc says:

    For that matter, why not just use a pair of switching transistors on the TX and RX lines, using the appropriate signaling voltage?

  3. foerdi says:

    The board pictured above just brings out the connections for uart and a sd card. In his blog he then used a ftdi breakout board to interface it. But these things work with 1.8V to 5V uart levels, so theres no protection required.
    This board is just an adapter, not a protection device.

  4. STrRedWolf says:

    Isn’t RS232C spec’ed to 5V, not 12V?

  5. PinkFreud says:

    Good job, Moogle. Can’t wait for mine to arrive.

  6. Pete says:

    @STrRedWolf rs232 is speced at +/-3v to +/-15v

  7. Chuckt says:

    Nice work but I wish there was more information.

  8. The Moogle says:

    @Chuckt
    I have been trying to add as much info as possible to the wiki :) http://www.elinux.org/Didj

    Thank you to everyone who has Pre-Ordered!

  9. shazzner says:

    Awesome, picked one up during the woot sale. I’ve been waiting for someone to sell these again.

    Has there been any progress on a custom firmware for the didj?

  10. PhilKll says:

    There has been some progress, an SD card driver, a bootloader, graphics work, check out the wiki page, there is quite a bit of information, some prebuilt build environments, some how-to’s, and links to join in the discussion, if you have some questions or things to add.

  11. Nrrdzilla says:

    @The Moogle

    Nice work! Thanks for getting these out – I’ll prob be putting in an order shortly.

    Whee!
    N

  12. Jonas says:

    @moogle

    I cant get paypal to process the purchase. I want 3 boards.

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