What it does
Receives Art-Net over wired Ethernet and drives four independent addressable LED outputs (WS2812B, SK6812), 256 pixels each at 30fps. It runs from USB-C or a LiPo cell, and has headers for an SSD1306 OLED and SWD debugging, on a 100 × 70 mm two-layer board.
Design
- RP2354A with 2 MB flash in the package, generating the LED signals from PIO state machines.
- W5500 hardwired Ethernet for the Art-Net packets on UDP 6454.
- SN74AHCT125 level shifter, taking the 3.3 V data up to 5 V for reliable signal margins at the pixels.
- Power: a TP4056 charger into an MT3608 boost for the 5 V rail, and an AMS1117 for 3.3 V. The board carries control signals only. At full white, 1024 WS2812Bs draw about 61 A, which goes to the strips directly.
- Every part from the JLCPCB/LCSC catalog, so turnkey assembly needs no custom stocking.
Generated, not drawn
The schematic, PCB, project file and BOM are all written by Python scripts
(gen_schematic.py, gen_pcb.py, gen_project.py, gen_bom.py), with every
symbol inline and no library dependencies. Change the generator, rerun it,
and the KiCad files follow.
Status
Components are placed and ground pours defined; routing is the next step, then firmware. Hardware files are CERN-OHL-P v2.