A homemade telephone lets you enter digits using a Morse key, displays the number on an LCD, and places a call when you press the MAIN button. For example, to call extension 31, you key in the Morse codes for 3 and 1. A push-to-talk speaker microphone gives conversations a radio-like feel.
Maker 7m4mon reused the enclosure, LCD and buttons from a test instrument built in 2008. An Arduino handles the input, while a Raspberry Pi provides the phone connection.
Instead of pressing number keys to make a call, you tap out Morse code. It is like taking a detour through the history of communications just to dial a number.
Nick Bild built the µTari Go, a handheld Atari 2600 that uses the original console's circuitry rather than emulation. It has a built-in four-inch CRT, controls, speaker and a slot for original Atari 2600 cartridges.
The components fit inside a 3D-printed enclosure. The device uses an external 12-volt power supply rather than an internal battery.
To make a handheld console, the maker chose a CRT instead of an LCD. It fits in your hands, but the power cable still has to come along.
Instead of pressing number keys to make a call, you tap out Morse code. It is like taking a detour through the history of communications just to dial a number.