matrix-display

Ongoing

STD matrix-display

License: TAPR Open Hardware License

Mode:

Editors' pick

1.6k
0
0
1

Update time： 2020-08-29 09:00:50

Creation time： 2019-05-10 18:14:32

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.

Design Drawing

schematic diagram

（ 1 / ）

Sheet_1
Open in Editor
Sheet_2
Open in Editor
Sheet_3
Open in Editor
Sheet_4
Open in Editor
Sheet_5
Open in Editor
Sheet_6
Open in Editor

PCB

（ 1 / ）

matrix/display
Open in Editor
matrix-display-v2
Open in Editor

The preview image was not generated, please save it again in the editor.

BOM

BOM download Purchase Parts

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