World's Smallest Apple iMac
Michael Pick, better known as “The Casual Engineer”, has built the world’s smallest functional Apple iMac, but it’s not what you think. This tiny computer is about as tall as a Red Bull can and consists of a custom 3D-printed case, a Raspberry Pi 4 and a 7-inch IPS display. Unfortunately, the build didn’t go as smoothly as you think, since Pick had to remove two of the Raspberry Pi’s USB ports and its Ethernet socket to make sure everything fit securely inside the case. Read more for a video and additional information.

He plugged a wireless dongle into one of the remaining USB ports for the wireless keyboard and mouse, whgile a low-profile ribbon cable is used to connect the display to the Raspberry Pi. He needed to be extra careful crimping cables and adapters to ensure the iMac was able to be powered from a USB-C extension cable that sits in under the screen. A heat sink was added to the CPU for additional cooling and a tiny fan is mounted in the case ensures to keep the air flowing across the Raspberry Pi.

2020 Apple iMac with Retina 4K Display (21.5-inch, 8GB RAM, 256GB SSD Storage)
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2020 Apple iMac with Retina 4K Display (21.5-inch, 8GB RAM, 256GB SSD Storage)
  • 21.5-inch (diagonal) 4096-by-2304 Retina 4K display
  • 3.6GHz quad-core 8th-generation Intel Core i3
  • AMD Radeon Pro 555X graphics
  • Ultrafast SSD storage
  • Two Thunderbolt 3 (USB-C) ports
CanaKit Raspberry Pi 4 4GB Starter PRO Kit - 4GB RAM
  • Includes Raspberry Pi 4 4GB Model B with 1.5GHz 64-bit quad-core CPU (4GB RAM)
  • 32GB Samsung EVO+ Micro SD Card (Class 10) Pre-loaded with NOOBS, USB MicroSD Card Reader
  • CanaKit Premium High-Gloss Raspberry Pi 4 Case with Integrated Fan Mount, CanaKit Low Noise Bearing System Fan
  • CanaKit 3.5A USB-C Raspberry Pi 4 Power Supply (US Plug) with Noise Filter, Set of Heat Sinks, Micro HDMI to HDMI Cable - 6 foot (Supports up to 4K 60p)
  • CanaKit USB-C PiSwitch (On/Off Power Switch for Raspberry Pi 4)