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Matrix

picafe·pendant·matrix/matrix.kicad_pcb

Matrix PCB layout, top view — open source board by picafe

About the Matrix PCB

Matrix is an open source PCB design by picafe, published on GitHub. It is a 4-layer board measuring 33.2 × 33.2 mm, with 9 components from 6 distinct parts.

Other key parts include the HT16K33A-28SSOP. By type, the board carries 3 resistors, 2 connectors, 1 IC, 1 LED, 1 diode and 1 capacitor.

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

From the project

A pendant built from two PCBs: a 8×8 bicolor LED matrix module (red, orange, green) and controller board with battery charging, USB-C power, 5 V boost, and motion sensing.

A pendant built from two PCBs: a 8×8 bicolor LED matrix module (red, orange, green) and controller board with battery charging, USB-C power, 5 V boost, and motion sensing.

I had already been working on a 32×8 bicolor matrix module and wanted to try the Pendant YSWS before the deadline. An example on the pendant website inspired me to make a bicolor version with an orange fire-style pattern. Fitting the full matrix and controller on one 2/4 layer board was not the most possible, so my design splits into a display PCB and a pendant controller, which are connected with 2.54mm pitch pin headers…

Matrix, from the project README
From the project README

Main components on the Matrix

HT16K33A-28SSOP

Matrix bill of materials (BOM)

9 components, 6 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
HT16K33A-28SSOP
U1
2
CONN_01X04_SOCKET
Conn_01x04_Socket
J1, J2
1
DISP_SEGMENT_8X8_BICOLOR_ROWCATHODEMI2A883XX
LED1
1
1N4148WS
Changjiang Electronics Tech (CJ)
D1
1
100NF
100nF
YAGEO
C1
3
47kΩ
UNI-ROYAL(Uniroyal Elec)
R1, R2, R3

Matrix design files

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

Matrix: common questions

How big is the Matrix PCB?

The Matrix measures 33.2 × 33.2 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Matrix?

9 components, from 6 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 Matrix design files?

From the picafe/pendant 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 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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