OHM-0002Design demo · no physical photo
OHM-0002
16-LED Addressable Ring — 2-layer, 60 mm diameter
Concept example2 layersRev A
- MCU
- CH32V003F4U6
- Input
- USB-C 5V
- Layers
- 2
- Size
- 60 mm diameter
- Parts
- 22
- Assembly
- Single-sided
- Fabrication
- Not fabricated
- Physical testing
- Not physically tested
Shipping extra
01
Prompt
Circular PCB with 16 WS2812B addressable RGB LEDs arranged in a ring. CH32V003 microcontroller to drive the LEDs. USB-C connector for 5V power. One tactile button to cycle through preset patterns. Board diameter around 60 mm.
Conversation edits:
- Add bulk capacitor (100 μF) at USB input
- Increase ground pour clearance around LEDs
02
Schematic
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Layout & 3D
Top
Bottom
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Key features
A circular board with 16 WS2812B-2020 addressable LEDs in a ring pattern. Controlled by a CH32V003 RISC-V microcontroller. Ideal for wearables, props, or small displays. Good visual demo for video content.
- •16 × WS2812B-2020 addressable RGB LEDs
- •CH32V003F4U6 RISC-V MCU (16 KB flash, 2 KB RAM)
- •USB-C 5V input (LED power)
- •One tactile button to cycle animation modes
- •SWD pads for programming
- •Circular PCB, 60 mm diameter
- •100 μF bulk capacitor for LED current spikes
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Notes
- Each LED draws up to 60 mA at full white; total max current is ~1 A. Recommended to limit brightness in firmware or use a 2 A supply.
- WS2812B timing is sensitive; do not exceed ~2 m wire length between MCU and first LED.
- Programming requires SWD adapter (WCH-LinkE or similar).
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Files
No downloadable files are available for this design concept.
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