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STD NeonCandy

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License: CC-BY-SA 3.0

Creation time: 2019-09-12 07:19:10
Update time: 2022-12-14 10:32:28
Description
A dual microcontroller board for controlling "Neopixel" LEDs, with one micro dedicated to driving the LEDs while the other micro is busy reading push buttons, polling rotary encoders, reading IR remote signals etc etc. The microcontrollers -two atmega328s -communicate with one another over their I2C bus. The very short wire run negates the need for the usual pull up resistors on the bus. v1 - - Initial version v1.1 - - Swapped Tx and Rx pads to match my USB Serial Converter board - Made VCC and GND traces wider for better power distribution between components - Tidied up the via positions and spacing between traces - Moved some pad labels around to make more room and make the board slightly smaller - Added VCC and GND copper fills
Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 ATMEGA328PB-AN U1,U2 TQFP-32_7X7X08P 2
2 Header-Male-2.54_1x6 PROG_MAIN,PROG_CONTROL HDR-6X1/2.54 2
3 10k R1,R2 0805 2
4 ROUND PAD SCK_1,SCK_2,MOSI_1,MISO_1,MOSI_2,MISO_2,P1_-,P2_-,P3,P4,P5 PAD 60/40 11
5 1X10 HEADER IO_HEADER1 1X10 HEADER 1
6 100n C1,C2,C3 0805 3

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