Round Light Engine Design
Thought for 6 sec
I’ll treat this as the Round Console X hardware controller for your Round Light Engine color grading software: first I’ll update the project identity/docs, verify the schematic is still clean, then set up a one-sided PCB structure with placement/routing constraints.
Worked for 50 sec
I updated the project to Round Console X and changed the description to match your clarified goal: a hardware console for your self-developed Round Light Engine color grading software. I also re-ran schematic checks, and the schematic is currently clean with no open ERC/passive/footprint warnings from the checks run.
Open items:
- I could not continue into one-sided PCB setup/placement/routing because your account currently has no available ACUs for AI execution.
- PCB is still at the existing 160mm × 100mm, 4-layer setup; one-sided PCB structure has not yet been applied.
- Ergonomic placement and routing are still pending.
Next steps when ACUs are available:
- Convert layout intent to a single-sided / 2-layer fabrication structure with bottom copper used as the main routing side and jumpers/0Ω links allowed.
- Arrange OLED, encoders, and trackball headers into a console-style layout.
- Route the PCB and verify no airwires or DRC issues remain.
Single-sided setup
Ergonomic placement
Run design checks
Document requirements
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Design Review Notes — Initial Schematic Input
Review Summary
The provided wiring matrix is broadly usable for a Pico-based control console. The changes below are incorporated into the schematic so the design is more robust and easier to route as a single-sided PCB.
Corrections / Improvements Applied
- I2C pull-ups changed from 10kΩ to 4.7kΩ on SDA and SCL.
- MCP23017 RESET added with 10kΩ pull-up to 3V3.
- MCP23017 A0/A1/A2 tied to GND for I2C address 0x20.
- One 100nF decoupling capacitor added near MCP23017 VDD.
- One 100nF local capacitor added at OLED VCC.
- One 100nF capacitor added at each trackball header VDD.
- One 10µF bulk capacitor added on the 3V3 rail.
- 10kΩ pull-ups added on all three SPI CS nets.
- Trackball header spare pins are intentionally left unconnected until the exact breakout pinout is confirmed.
Notes for Layout
- Keep GP26/GP27/GP28 SPI traces short and grouped.
- Place CS pull-ups near the Pico or between Pico and sensor headers.
- Place decoupling capacitors physically close to the power pins/headers they support.
- Use wider 3V3 and GND traces, around 0.75–1.0mm where possible.
- Expect jumper wires or 0Ω links if true single-sided routing becomes congested.
Review Summary
Corrections / Improvements Applied
Notes for Layout
