AC.gadget-15Segment: Difference between revisions
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=AC.gadget-15Segment= | =AC.gadget-15Segment= | ||
Showing a scrolling text on 15 segment displays (5 digits) I got from a friend IN THE 80s (gasp!). IO multiplexing with three 8 bit shift registers, using PNP transistors to drive the LEDs. | Showing a scrolling text on 15 segment displays (5 digits) I got from a friend IN THE 80s (gasp!). IO multiplexing with three 8 bit shift registers, using PNP transistors to drive the LEDs. Wiring with display took most of the time, followed by the array of transistors and associated resistors for limiting base and LED current. | ||
[[File: | [[File:20170613T224056.jpg|left|thumb|800px|Wiring on the back of the display board]] | ||
[[File:20170802T115858.jpg|left|thumb|800px|Version 2: Contained in a plug]] | |||
<br clear=all/> | <br clear=all/> | ||
[[My_IoT_projects|My IoT Projects]] | [[My_IoT_projects|My IoT Projects]] | ||
Revision as of 19:47, 11 June 2018
AC.gadget-15Segment
Showing a scrolling text on 15 segment displays (5 digits) I got from a friend IN THE 80s (gasp!). IO multiplexing with three 8 bit shift registers, using PNP transistors to drive the LEDs. Wiring with display took most of the time, followed by the array of transistors and associated resistors for limiting base and LED current.
