Cascading Xmas Lights

1 year ago 1063
  • Description
  • Documents
  • BOM
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Description

Repurposing an old laptop power supply (18vdc) and dozens (actually - hundreds...) of white LEDs from old solar powered Christmas lights, to build an illuminated 'Merry Christmas' sign (a la Big Clive's Arcade sign). The LEDs are made into strings of 5, each with a current limiting resistor, and a switching transistor to control the string. The transistors are switched from the outputs of multiple Shift Registers strung together. The bits of data, going into the Shift Registers, along with the clock cycles, Output Enable, and CLR signal, are all controlled by an Arduino, so that I can program in different effects.

Documents

XMAS Lights

BOM

ID Name Designator Footprint Quantity
1 204-10UYC/S530-A3 LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8,LED9,LED10,LED11,LED12,LED13,LED14,LED15,LED16,LED17,LED18,LED19,LED20,LED21,LED22,LED23,LED24,LED25,LED26,LED27,LED28,LED29,LED30,LED31,LED32,LED33,LED34,LED35,LED36,LED37,LED38,LED39,LED40 LED-3MM/2.54 40
2 330 R1,R2,R3,R4,R5,R6,R7,R8,R17,R18,R19,R20,R21,R22,R23,R24 AXIAL-0.3 16
3 2N2222 Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8,Q9,Q10,Q11,Q12,Q13,Q14,Q15,Q16 TO-92(TO-92-3) 16
4 L7805 U1 TO-220(TO-220-3) 1
5 74HC595 U3,U4,U5 NONE 3
6 18vdc V1 HDR1X2 1
7 ICSP 2x3 J1 HEADER_PRG_2X03 1
8 ARDUINO PRO MINI U2 ARDUINO_PRO_MINI_V1 1
9 0.33uF C1 RAD-0.1 1
10 0.1uF C2,C6,C3,C4,C5,C8 RAD-0.1 6
11 10K R9,R10,R11,R12,R13,R14,R15,R16,R25,R26,R27,R28,R29,R30,R31,R32 AXIAL-0.4 16
12 Power Bus P1,P2 HDR-3X1/2.54 2
13 Data Bus P3,P4 HDR-4X1/2.54 2
14 74HC595 U1 SOIC-16_150MIL 1

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Comments (1)

manoranjan2050 Reply

Code Please

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你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
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