Yearly Archives - 2020

25 Mar

HD107S LED details

HD107s pixel RGB led used Newstar’s IC(NS107S), so we named “HD107S”, PWM refresh rate 27kHz, Oscillator Frequency 40MHz. Brief of HD107s  LED 1, Althrough it is DC5V input, but it almost same voltage drop with 12V pixel led strip, 30leds/m HD107S 7m no voltage drop. 2, It is the fastest digital pixel led HD107s -it is a update of apa102 led, which is Absolutely a best perfect pixel led to  replace  APA102/APA102C/APA107/SK9822, because it is much more stable and faster and energy saving . 3, And HD107s LED [...]

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25 Mar

HD107S LEDs compare APA102 LEDs

  According to Paul Stoffregen’s Articles on December 6, 2017December 7, 2017, we know the APA102 LEDs strips have the problem at 24 MHz, usually after 150 to 250 LEDs. But why?  Here’s his attempt to investigate:One tempting explanation is signal quality problems due to horribly messy unterminated wiring carrying high speed signals, as in this photo! But it turned out to be a more fundamental timing problem.In this test, a Teensy 3.2 runs the FastLED “Cylon” example with this line:LEDS.addLeds<APA102,11,13,RGB,DATA_RATE_MHZ(24)>(leds,NUM_LEDS);NUM_LEDs was set to [...]

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