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Revisiting the MrBohm (aka the Monster)



Now with all the hardware details worked out, and because I understand the basics of Pico SDK programming. I think it'll be a bit easier this time around.


Differences from last time:

  • Using Pico instead of Pi Zero - so boot time is instant
  • No support for 5200 or Intellivision.
  • I'm not going to worry about cost, but I'm going to try to keep a board to less than $50.
  • Limited support for controllers.
    • Those that report as Xbox 360 controllers like the 8bitDo SN30 Pro (and actual Xbox 360 controllers)
    • Modern and Classic Atari VCS controllers (I just ordered one of both)
    • Still going to support Keyboards and Mice - I'll do the basics, but for more advanced applications, I'll leave it to others to expand the Pico code
  • USB support for sure, maybe Bluetooth. There are methods on the internet for using Bluetooth with the Pico... but I'm not sure if there is C code for it. It'll be a future addition if it ever gets done.
  • I'm adding an SD card option, technically there was one on the Pi Zero. I mostly just want to see if I can do something useful with it. I don't think I'll make it necessary to have an SD card in the reader in order to use the device.
  • Definitely planning to power it using only power from the controller ports.
  • It will have an LCD attached.


I started wiring the setup last night. Here's a photo showing the chips before I started connecting everything together.




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