Mac(intosh) mini

Build Instruction

• Print the outer shell.
  • PLA, 0.2 mm, 180 ℃ (See also ./openscad/README.md)
  • macintosh-mini-part-a.stl (stl)
  • macintosh-mini-part-b.stl (stl)

• Setup your Orange Pi Zero Plus 2 (H3)
  • Install Armbian Bionic. https://www.armbian.com/orange-pi-zero-plus-2-h3/
  • Then SSH into the device.

    
    $ sudo apt install -y git tightvncserver

Install Node.js

$ git clone https://github.com/tj/n /tmp/n && cd /tmp/n && sudo make install $ sudo n v10

Install https://github.com/xpertsavenue/WiringOP-Zero

$ cd ~/ $ git clone https://github.com/xpertsavenue/WiringOP-Zero

Please refer to https://github.com/xpertsavenue/WiringOP-Zero

Enable SPI1 interface

$ sudo vi /boot/armbianEnv.txt # or use armbian-config ! overlays=spi-spidev analog-codec usbhost2 usbhost3

• param_spidev_spi_bus=1

Setup vncserver

$ mkdir ~/.vnc $ vncpasswd ~/.vnc/passwd

Install the dependencies & config files

$ git clone https://github.com/likeablob/macmini ~/macmini $ cd ~/macmini $ sudo ./install.sh

Copy your assets

$ cp /path/to/vmac.rom ~/macmini/minivmac/vMac.ROM # Mini vMac ROM file $ cp /path/to/vmac.dsk ~/macmini/minivmac/system.dsk # Mini vMac disk file $ cp /path/to/.basilisk_ii_prefs ~/.basilisk_ii_prefs # Basilisk II config file $ cp /path/to/macboot.wav ~/macmini/macboot.wav # Boot sound (optional)

Reboot to apply the settings

$ sudo reboot now

Select LineOut as the default sink

$ pacmd list-sinks | grep -e 'name:' -e 'index:' index: 0 name: # LineOut

• index: 1 name: # HDMI $ pactl set-default-sink 0 # or use DISPLAY=:1 pavucontrol and alsamixer to adjust volume

• [Tips]: Here is my working .basilisk_ii_prefs.

• Wire the display & USB boards to the OPi

• [Tips]: Pinout can be found below.
  • OPiZero
  • https://linux-sunxi.org/Xunlong_Orange_Pi_Zero_Plus
  • http://www.orangepi.org/orangepibbsen/forum.php?mod=viewthread&tid=2236
  • LCD (Note that there might be some variants.)
  • link1 link2
  • backup

Basic Concepts

1. At system boot, fbtft_device kernel module is loaded and it initializes the LCD as /dev/fb0.
2. nodm starts an X session and ~/.xinitrc get executed.
3. ~/.xinitrc launchs matchbox-window-manager and ~/macmini/switcher/*js.
4. ~/macmini/switcher/index.js reads the scripts ~/macmini/switcher/sh.d/*sh and spawns them one by one when there is a HTTP GET request at localhost:5501/.
5. ~/macmini/switcher/gpio-reader.js watchs the push SW at GPIO7(PA06) and send a request to localhost:5501/.

How does the low-res LCD(320x240) handle 512x384 resolution?

Internally tightvncserver and ssvncviewer are used to scale the display.

• e.g. 1_large_minimac.sh launches:
  • tightvncserver to create a virtual display (512x384) at DISPLAY=:1 (:5901)
  • minivmac in DISPLAY:1
  • ssvncviewer -scale 0.625 in DISPLAY:0 (By the -scale option, low-res LED get upscaled)

Gallery

BOM

Acknowledgments

• Mini vMac https://www.gryphel.com/c/minivmac/
• Basilisk II https://basilisk.cebix.net/
• Kudos to all the devs!