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Board Lurker
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neopixel nbv4 speaker whine
i finally fully assembled my saber!!! its turned out great...but
on my green program especially you can hear a certain whine to the sound
https://imgur.com/gallery/M3Atydr
i have clash set to 1023,1023,1023 or "white" and the clash sounds start to crackle and static after about 1/3 discharge
without the blade everything sounds great, i've tried reformatting the SD card
its my first build, so i had my share of troubles along the way...could it be the amp?
am i expecting too much from the battery? or should i rewire it?
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Jedi Council Member
Which battery are you using, and what resistors do you have on your LEDs? Also is the battery fully charged?
TCSS MODERATOR
All n00bs READ these first (PLEASE)!!!:
1. Forum Guidelines
2. FJK’s “Down and Dirty” guide to Ohm’s Law
"Yeah, yeah, I've heard it all before... you want blindingly bright, super loud, running 1138 blinkies off of the cheapest sound card you can find AND you want all of it to run on a battery the size of a dime, and run for a very, VERY long time. That one cracks me up every time..."
My email: fjk_tcss@yahoo.com
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Panasonic Li-Ion 18650 3.7V 10A 3200mAh PCB Protected Rechargeable Battery
330 ohm SMD 0603 resistor in the blade
20mA DynaOhm™ Variable Resistor on the switch LED
When green, I hear the faint whine, even on a full charge.
it does get worse as the battery discharges
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What wire gauge are you using, particularly for power to board and strips? On my first neopixel build I had a similar issue but it was because of the wires being too thin, I changed out to 26 awg and it worked perfectly.
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