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matrix-display

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TAPR Open Hardware License

License: TAPR Open Hardware License

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Update time: 2020-08-29 09:00:50
Creation time: 2019-05-10 18:14:32
Description

Description

An Arduino/ESP8266 display board for 3x2 788BS red led matrices connected to max7219 drivers. The IREG is higher than usual to reduce brightness, use a smaller resistor (maybe 30/40 K) for daylight applications. Work in progress, comments are wellcome. When used with MD_MAX72XX and MD_Parola libs this matrices are not one of the supported hardware types, but I was able to wire 1 and 1+1 on a breadboard and they work quite well with the correct settings. See attached .TXT for details about connecting the 788BS matrix to the MAX7219 and use it with MD_MAX72xx + MD_Parola libs on arduino IDE.
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Design Drawing

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ID Name Designator Footprint Quantity
1 100K R1,R2,R4 0805 3
2 788BS M1,M2,M4 788BS 3
3 10UF-TANT C2,C4,C8 CP_TANTALUM_CASE-R_EIA-2012-12_REFLOW 3
4 IN H1 DIP-1X5P-2.54MM-M 1
5 100nF C1,C3,C7 0603 3
6 max7219cng U1,U2,U4 MAX7219 (SMT) 3

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Project Attachments

Project Attachments

Order File name Download times
1

connecting_788bs.txt

1
2

788BS.pdf

1
3

max7219-7221.pdf

1
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