Home
Prox / RFID
Verichips
Ladder Logic
[interfacing] †
Tube Joints
Key Code From Photo
SolveSpace (3d CAD)
SketchFlat (2d CAD)
Photographs
Miscellany
Resume / Consulting
Contact Me

LDmicro Forum - 7segment with single line data

(you are viewing a thread; or go back to list of threads)

7segment with single line data (by M.Amjad)
Hi,Please any can tell me, Could i use this followng 7segment with ldmicro in Formatted string over uart.

This board uses 3 x WS2811 IC to control the segments of the segmented display. This means they can be daisy chained and controlled with just a single data line.
https://github.com/IdleHandsProject/addr_7seg
Thu Aug 1 2019, 14:43:30
(no subject) (by MGP)
Not possible, use an arduino or other controller.
Thu Aug 1 2019, 15:25:23
(no subject) (by José)

MGP is right, you can't use such displays with ldmicro because it requires fine PWM control, which is not possible with ldmicro.

BUT, you can do the same with chained 7-Segment displays controled by CD4094 shift registers, using SPI to drive the chain.

look at:
https://wiki.analog.com/univer...utorial-digital-shift-register

Data= SPI_MOSI
Clock= SPI_CLK
Strobe= Vcc


Displays (CD4094) can be chained using QS ouput of one register as Data output for the next one.
One byte sent via SPI corresponds to one display.

I Tested it successfully in the past.

JG
Fri Aug 2 2019, 05:17:04
(no subject) (by José)
QS output of one register is of course Data INPUT (not output) of the next one !
Fri Aug 2 2019, 05:19:09
(no subject) (by M.Amjad)
Very thanks full to jose and MGP for quick replay,i understand
and i try to do work on it,
Once again Thanks.
Fri Aug 2 2019, 11:37:25
Post a reply to this comment:
Your Name:
Your Email:
Subject:
(no HTML tags; use plain text, and hit Enter for a line break)
Attached file (if you want, 5 MB max):