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• How it's built

  Franck GALLIAT • 12/14/2018 at 17:09 • 0 comments

   - The Pad

  The PCB was cutted then re-wired to keep original dir.-cross & btns

  I found a tutorial here to perform that.

  Then all buttons + GGear led were wired to a GPIO expander (SX1509 from SparkFun) that is readed by an Arduino ProMini 3.3v (8Mhz) because I had a lot of troubles by connecting it directly to the ARM SoC.

   - The SoC

  It's an AriettaG25 ARM SoC (not a raspPI one...).
  

  It has 128MB of RAM, 400MHz cpu, SD slot & pluggable WiFi module.

  no sound output, no HDMI output, so Why ?

  Because is more even tiny than the RPI-0, it has 3 USB host ports, you can change the GPIO header layout. (& I've got 3 of those left in my toolbox...)

  - The Sound Interface

  I had 2 options :

   - plug an USB SoundCard (but needed to rebuild a full kernel w/ good sound modules since the model that I have is not reconized )

   - wire a DFPlayer Mini (Serial MP3 playback module that I already used in my previous console projects)

  I choose the DFPlayer, it does require less POWER & requires no CPU resources... (& it's cheap !)
  

  I finally plugged it onto the Arduino too to keep my others TTL lines free.

   - The Screen

  2 reasons to choose ILI9341 :

   - I already used it in my projects

   - there's an SD image file already built w/ Debian Jessie for the Arietta

  It's SPI connecting, has 320x240px 64k colors 

• Features

  Franck GALLIAT • 12/14/2018 at 17:06 • 0 comments

  - Bash & Codiad IDE programmable

   - SSH over USB or WiFi

   - Lua & cpp can be used to develop

   - ARM core (400MHz / 128MB ram / uSD) that boots a Debian Jessie

   - 320x240 px color Screen

   - MP3 playback

   - Original SEGA GameGear enclosure w/ fully working btns

   - add USB Host to plug an ext. keyboard ....

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