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8*8*8 LED cube controller

2 years ago 976
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Description


    This is par of a (RGB) led cube 8x8x8 controler.

    It's a catode/anode led controller/driver that if it is ment to be used in RGB LED cude configuration, just stacks on top of each other three times in a tower. It's designed to use M3 spacers, very cheaply available on ebay.

    It uses 74hc495, and you can configure on witch side(of a board: left/right) will be -serial input- and -serial output- with two jumpers (U17 - U22), basicly a blob of solder should work just fine. On the output of last 74hc495 on the board, there is a one AND gate as buffer.

    For output stage, it uses 74VHC541 3-stage non-inverting buffers to drive LEDs via 100/220ohm resistors.

    All the M3 holes positions markings are labeled in project itself.
    The pins are(from left to right) on both sides: GND-VCC-Latch(RCLK)-Clock(SRCLK)-Data(Serial) in/out --->(nice video about 74hc495(s) from -kevin darrah-)

    8 100uF tantalum with 2 100nF ceramic caps (are overkill) should provide very stable power source for LEDs and shift registers.
    Connectors from resistors to LEDs are 8 pin SMD 1.25mm spacing (https://www.ebay.com/itm/191800273097).

    **This project was inspired by** "http://www.kevindarrah.com/?cat=99"

Parts list:

Documents

Sheet_1

rg

rg2

BOM

ID Name Designator Footprint Quantity Mounted
1 0b6ea66f1a77ef3069b26dadb3d73791 P3,P4 HDR-1X2/2.54 2 Yes C49661
2 49af9163ee894a2ab2455c062c7f1214 U1,U2,U3,U4,U5,U6,U7,U8 SOIC-16_150MIL 8 Yes C110383
3 050210eb44fb24b0f1f7d73e6372031b P6 HDR-1X1/2.54 1 Yes C81276
4 050210eb44fb24b0f1f7d73e6372031b P5 HDR-1X1/2.54 1 Yes C81276
5 6b445886d8e7444abe2709f6b19e1434 U17,U18,U19,U20,U21,U22 1PIN CUTTING PCB 6 Yes
6 33668964da2c456698957be8f3c2a2d6 RN1,RN2,RN3,RN4,RN5,RN6,RN7,RN8,RN9,RN10,RN11,RN12,RN13,RN14,RN15,RN16 0603_X4 16 Yes C149863
7 0b6ea66f1a77ef3069b26dadb3d73791 P2,P1 HDR-1X2/2.54 2 Yes C49661
8 bea0268041164c1aa8dc3448f20b6119 U31 SOT-353 1 Yes C96239
9 efeb236f44d64d0c8e98d9845f139d2a U9,U10,U11,U12,U13,U14,U15,U16 PCB8PCONNA 8 Yes undefined
10 c32689a25db04a009498aea4906389f3 C1,C2 0805 2 Yes C86041
11 a81f91a29bec4fa1acb726a5fdf1c581 U23,U24,U25,U26,U27,U28,U29,U30 TSSOP-20 8 Yes C232797
12 cc14d0073cd76637e1724111d496c153 C3,C4,C5,C6,C7,C8,C9,C10 CASE-B_3528 8 Yes C7196

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