A simple 7-segment wool display. Made of 7 pixel chips, a segdriver and a receiver.
The digit uses a 5-bit wireless channel. bit 0 is the blank pin (when set to 1 the display blanks out). Bits 1-4 set the displayed digit. You should probably change the receiver channel to something more original than “7segs”. To display numbers with more than 1 digit use bintobcd chip.