|3X7 (Project #28, September 18)||£23.00||sold out!|
Seven segment displays are and have been very common in electronics. Usually, they are the 'seven segments' are encapsulated into a single components, with a common anode or cathode and seven (sometimes eight for a dot) control lines.
This projects lets you construct three digit seven segment display from discrete components. The LEDs themselves shine though a thin 1mm PCB.
Further information and assembly instructions is here.