Panelboard
About the Panelboard PCB
Panelboard is an open source PCB design by doug7410, published on GitHub under the MIT license. It is a 2-layer board measuring 70 × 72 mm, with 4 components from 4 distinct parts.
By type, the board carries 1 transistor and 1 jumper.
It belongs with the displays & leds and test & measurement designs in this gallery.
From the project
Build guide, BOM and hardware for the Now-Playing desk appliance: HUB75 spectrum + touch now-playing display driven by room-mic song recognition
A minimal board whose only job is driving a HUB75 LED matrix.
No mic, no knobs, no display — 5 V in, a HUB75 connector out, and a plug-in ESP32 dev board on top. It exists because the Now-Playing appliance's Board 1 does HUB75 rendering buried under a lot of other hardware, and it would be nice to have the panel half on its own board.
- MCU: a stock ESP32-WROOM-32 38-pin dev board (the narrow Type-C kind, DORHEA/HiLetgo/DevKitC-32 — classic ESP32, not an S3), dropped into two 1×19 female headers. USB, RESET/BOOT and the 3.3 V regulator all come with the module, so this board carries none of…
Panelboard bill of materials (BOM)
4 components, 4 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AOD403 | TO-252-3_TabPin2 | Q1 |
| 1 | C1579341 470uF/16V | CP_Radial_D8.0mm_P3.50mm | CB1 |
| 1 | C1622885 100nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | CB2 |
| 1 | C32713268 ESP 5V | PinHeader_1x02_P2.54mm_Vertical | JP1 |
Panelboard design files
The KiCad project lives in the doug7410/nowplaying-appliance repository on GitHub; these links point at the commit this page was built from.
Panelboard: common questions
How big is the Panelboard PCB?
The Panelboard measures 70 × 72 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Panelboard?
4 components, from 4 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 Panelboard design files?
From the doug7410/nowplaying-appliance 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 Panelboard design in my own project?
Yes, under the terms of its MIT license, which doug7410 chose for the repository.
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