Circuit for connecting apa102 LEDs to a 28X2.
View attachment 22474
Bill
Bill , you added greatly to my hobby life with your reply and circuit sketch.
the sketch held many features not previously known. like a /RST pin on a pic.
i'd thot they were done away with on newer pic uC's.
and the 10K and 22k R's on the program port. they affirm recent findings as rev-engr'd
a 027 PCB circuit. also note the 3 10k pull-down R's on the A pins and will be
thinking about what they are for.
btw did you use some PIC s/w to draw this circuit ?
what stands out are the part symbols. for its ease of use and PCB prices i play with the Easyeda
PCB s/w and would like my circuits to look as informative as yours does.
the other respondee to my 102 post , premelec, was asked about a vendor recomendation for
some 102 strips. and i want to ask you the same thing. 30/meter ones that are light in grams.
for a RC night flying applic'n. and a rec'n too for some good and readable tech data for the
led chips on these strips. and lastly if you have any code for a 102 strip that does not use macros.
last is to say that this 102 discovery led to looking here in a box on the shelf of some strip
leds bought a few years ago. they have 4 wires. and lit up nicely with a 12V batt w/ their controller.
using my 1054 rigol 'scope on the 3 rgb lines led to popping the fantasy bubble that they were
this newer 102 generation of strips. the signals were all PWM. this means doing some shopping
go to 0:42 and see the dazzling pattern these 102's have been programmed to do on a 2m plane
aloft after dark.
at 180+ $ the e-flite Night Radian is a bit pricey so am planning on get the plain-jane Walrus
from hobby-king and cutting grooves in the foam wing for some 102 strips
max.well