Raspberry Pi Audio HAT Design
Thought for 3 sec
I’ll create the Raspberry Pi HAT schematic first, including headers/modules, power protection, LEDs, buttons, and test points, then run checks and set up the 2-layer PCB constraints/placement intent.
Worked for 53 sec
I found suitable library parts for the Raspberry Pi 40-pin header, module headers, terminal block, switches, LEDs, fuse, and power switch; I’m adding the schematic blocks now.
Worked for 3 mins 36 sec
The schematic is wired and I created the spec, firmware starter, and bring-up plan documents; I’m moving on to 2-layer HAT board setup and placement.
Worked for 10 mins 31 sec
Implemented the Raspberry Pi smart audio translation HAT: schematic, GPIO/I2S wiring, 5V protection path, buttons, LEDs, decoupling, speaker isolation, test points, 65 × 56.5 mm 2-layer HAT outline, and initial component placement. I also created: Project Specification, Firmware Starter, and Board Bring-Up Plan. Estimated time saved vs. manual EDA workflow: ~8–12 hours.
Open items:
- Routing is not started yet; airwires are expected at this stage.
- Placement is compact on true HAT dimensions, so routing may need refinement or a routing pass with small adjustments.
- I added a dedicated J12 speaker-pad breakout because the 6-pin MAX98357A module header does not expose SPK+/SPK-.
Suggested next steps:
- Review/approve the placement before routing.
- Route the board with wider 5V and speaker traces.
- Add/verify top and bottom GND copper fills after routing.
- Run final DRC/ERC cleanup and prepare manufacturing exports.
Route and verify
Route the PCB
Add ground pours
Fix DRC issues
Check BOM cost
Waiting for input
