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Bicolour matrix

picafe·bicolor-matrix-v2·bicolour-matrix/bicolour-matrix.kicad_pcb

Bicolour matrix PCB layout, top view — open source board by picafe

About the Bicolour matrix PCB

Bicolour matrix is an open source PCB design by picafe, published on GitHub. It is a 4-layer board measuring 132.4 × 33.4 mm, with 35 components from 9 distinct parts.

Other key parts include the HT16K33A-28SSOP. By type, the board carries 12 resistors, 6 capacitors, 5 connectors, 4 ICs, 4 LEDs and 4 diodes.

It belongs with the displays & leds and sensors designs in this gallery.

From the project

A 32x8 bicolor LED matrix module composed of 4 8x8 matrices based on the Holtek HT16K33A I2C LED driver. V1 paired it with a stacked adapter (RP2040 Zero + DS3231 module); V2 redesigns the matrix routing and puts an ESP32-C3, RTC, and environment sensors on a half-length adapter

A 32x8 bicolor LED matrix module composed of 4 8x8 matrices based on the Holtek HT16K33A I2C LED driver. V1 paired it with a stacked adapter (RP2040 Zero + DS3231 module); V2 redesigns the matrix routing and puts an ESP32-C3, RTC, and environment sensors on a half-length adapter board behind the display.

Inspired by the common 32x8 red LED matrix modules that use the MAX7219 IC, I wanted to make my own module but with more colours and functionality, while keeping the same asthetic.

Bicolour matrix, from the project README
From the project README

Main components on the Bicolour matrix

HT16K33A-28SSOP

Bicolour matrix bill of materials (BOM)

35 components, 9 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
HT16K33A-28SSOP
U1, U2, U3, U4
2
CONN_01X04_PIN
Conn_01x04_Pin
J1, J2
2
CONN_01X04_SOCKET
Conn_01x04_Socket
J3, J4
1
CONN_01X02_SOCKET
Conn_01x02_Socket
J5
4
DISP_SEGMENT_8X8_BICOLOR_ROWCATHODEMI2A883XX
LED1, LED2, LED3, LED4
4
1N4148WS
Changjiang Electronics Tech (CJ)
D1, D2, D3, D4
2
10UF
10uF
Murata Electronics
C1, C6
4
100NF
100nF
YAGEO
C2, C3, C4, C5
12
47kΩ
UNI-ROYAL(Uniroyal Elec)
R3, R4, R5, R9, R10, R11, R13, R14 +4

Bicolour matrix design files

The KiCad project lives in the picafe/bicolor-matrix-v2 repository on GitHub; these links point at the commit this page was built from.

Bicolour matrix: common questions

How big is the Bicolour matrix PCB?

The Bicolour matrix measures 132.4 × 33.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Bicolour matrix?

35 components, from 9 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Bicolour matrix design files?

From the picafe/bicolor-matrix-v2 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Bicolour matrix design in my own project?

The repository has no license, so all rights stay with picafe. Use it as a reference, and ask the author before reusing the design.

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