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Std edition NeonCandy
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License: CC-BY-SA 3.0
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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