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STD devillamp-v2
License: Public Domain
Mode: Editors' pick
- 0
Update time：
2021-01-31 13:27:58
Creation time：
2016-05-19 21:30:39
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.
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | RaspberryPi B+ Connector | RPI1 | RASPBERRY PI A+ | 1 |
| 2 | Molex 39-28-1243 | P-ATX | MOLEX 39-28-1243 | 1 |
| 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 |
| 4 | 1k | R-PWR-OK-3V3 | R3 | 1 |
| 5 | 4k7 | R-PWR-OK-5V | R3 | 1 |
| 6 | 74AHCT1G125GW | U-LVLSHFT-1,U-LVLSHFT-2 | SOT-23-5 | 2 |
| 7 | 1u | C-LVLSHFT-1,C-MIC | RAD-0.1 | 2 |
| 8 | Header-Male-2.54_1x3 | P-1WIRE | HDR-3X1/2.54 | 1 |
| 9 | 4.7k | R-1WIRE | AXIAL-0.3 | 1 |
| 10 | Header-Male-2.54_1x4 | P-I2C,P-UART | HDR-4X1/2.54 | 2 |
| 11 | Header-Male-2.54_2x4 | P-SPI | HDR-4X2/2.54 | 1 |
| 12 | Header-Male-2.54_1x6 | P-AUXPWR | HDR-6X1/2.54 | 1 |
| 13 | Header-Male-2.54_2x3 | P-I2S | HDR-3X2/2.54 | 1 |
| 14 | 1u | C-LVLSHFT-2 | CP-RAD-2-5 | 1 |
| 15 | 1k | R-LDAT-1 | AXIAL-0.3 | 1 |
| 16 | 2.2k | R-LDAT-2 | AXIAL-0.3 | 1 |
| 17 | MEMS_MIC_SPH0645LM4H-BI2S | U-MIC-R,U_MIC-L | MEMS_MIC_SPH0645LM4H-BI2S | 2 |
| 18 | LM75BD | U-TEMP-TOP,U-TEMP-BOT | SOIC-8 | 2 |
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