License

Public Domain

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devillamp-v2

3 years ago 374
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

UNTESTED

This PCB is designed to drive five strips with WS2812B LEDs (or their variants) along with a Raspberry Pi (any version) from a single ATX power supply unit.

The five 5V ATX power rails are distributed to the five LED strips. While the data is forwarded between the strips.

The data path starts at the Raspberry Pi, which is connected to the first LED strip. From the end of the first strip it goes to the second strip. Make sure to connect only GND and DATA of the two strips, skip the 5V supply. The second strip will forward the DATA signal back to the PCB into the connector of the second strip. There it is forwarded to the third connector. Again it goes up to the end of the third strip and into the forth strip, which will pass it back to the PCB and into the fifth strip.

Documents

devillamp-v2

devillamp-v2

devillamp-v2.2

BOM

ID Name Designator Footprint Quantity Mounted
1 RaspberryPi B+ Connector RPI1 RASPBERRY PI A+ 1 Yes
2 Molex 39-28-1243 P-ATX MOLEX 39-28-1243 1 Yes
3 Header-Male-2.54_1x3 P-LED-1,P-LED-2,P-LED-3,P-LED-4,P-LED-5,P-LED-SB,P-LED-6,P-LED-7,P-LED-8,P-LED-9,P-LED-10 HDR1X3_RM35 11 Yes
4 1k R-PWR-OK-3V3 R3 1 Yes
5 4k7 R-PWR-OK-5V R3 1 Yes
6 74AHCT1G125GW U-LVLSHFT-1,U-LVLSHFT-2 SOT-23-5 2 Yes C7484
7 1u C-LVLSHFT-1,C-MIC RAD-0.1 2 Yes
8 Header-Male-2.54_1x3 P-1WIRE HDR-3X1/2.54 1 Yes
9 4.7k R-1WIRE AXIAL-0.3 1 Yes
10 Header-Male-2.54_1x4 P-I2C,P-UART HDR-4X1/2.54 2 Yes
11 Header-Male-2.54_2x4 P-SPI HDR-4X2/2.54 1 Yes
12 Header-Male-2.54_1x6 P-AUXPWR HDR-6X1/2.54 1 Yes
13 Header-Male-2.54_2x3 P-I2S HDR-3X2/2.54 1 Yes
14 1u C-LVLSHFT-2 CP-RAD-2-5 1 Yes
15 1k R-LDAT-1 AXIAL-0.3 1 Yes
16 2.2k R-LDAT-2 AXIAL-0.3 1 Yes
17 MEMS_MIC_SPH0645LM4H-BI2S U-MIC-R,U_MIC-L MEMS_MIC_SPH0645LM4H-BI2S 2 Yes
18 LM75BD U-TEMP-TOP,U-TEMP-BOT SOIC-8 2 Yes

Attachments

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Members

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