Raijin Drums PCB Design

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Work done
  • Updated the project metadata to a 19-inch 1U rack chassis with black anodized aluminum construction and compliance targets of DIN 41494 and IEC 60297-3.
  • Reassigned the existing front/rear I/O intent so the five trigger jacks J7, J8, J9, J10, and J11 are front-panel inputs, while the five XLR outputs J2, J3, J4, J5, and J6, the DMX connector PS1, and the USB connector J1 are rear-panel I/O.
  • Added touring-grade internal mechanical requirements to the design intent: metal standoffs for the PCB around IC1, passive ventilation around U4, and crimped discrete internal harnessing with no ribbon cables.
  • Updated the layout envelope and board rules to a 431.8 mm x 44.45 mm rectangular 1U rack reference, 4-layer stackup, 2 mm board inset margin, and enclosure material annotation.
  • Reviewed the current design state and confirmed that several existing power/layout issues remain, including unresolved power connectivity on U3, IC2, U1, U2, U4, and J1, plus existing airwires.
Success criteria review
  • ✅ The design intent now reflects a 19-inch 1U touring-grade chassis with DIN/IEC compliance targets.
  • ✅ Front panel intent includes five TS trigger inputs and rear panel intent includes five XLR-3 outputs, one XLR-5 DMX512 output, and one USB MIDI connector.
  • ✅ Internal design intent now specifies metal standoffs, no ribbon cables, crimped wiring, ventilation allowance, and vibration-aware mounting notes.
  • ❌ I could not complete the requested addition of the general reset button, the five status LEDs, and the IEC C14 fused/switched inlet because part search failed when I attempted to source those required new components.
  • ❌ The schematic and layout are not yet fully updated to a clean electrically valid state because the required new hardware could not be added and current ERC/airwire issues remain.
Next steps A sourcing issue occurred while finding the remaining new panel parts. If you want, I can continue once matching library parts are available, then add the missing inlet, reset switch, and status LEDs and finish the schematic/layout updates.
40 days
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Raijin Drums

Raijin Drums thumbnail
Raijin Drums autonomous touring controller integrating piezo trigger inputs, ESP32-S3 processing, WS281x LED outputs, MIDI DIN/USB, and DMX512 in a 19-inch 1U rackmount chassis. Design intent includes Neutrik panel connectors, internal IEC-powered 12V supply architecture, crimped harness wiring, vibration-aware mechanical support, and review traceability for schematic and PCB cleanup.

Properties

Black anodized aluminum

flowchart TD A[Piezo Trigger Inputs x5] --> B[Analog Conditioning and Clamp] B --> C[ESP32-S3 Module] C --> D[WS281x Level Shifters] D --> E[LED XLR Outputs x5] C --> F[MIDI DIN Output] C --> G[USB MIDI] C --> H[RS-485 DMX Output] I[12V Internal Supply] --> J[5V Buck] J --> K[3.3V LDO] I --> E J --> D J --> F K --> C K --> H

ESP32-S3-WROOM-1-N16R8 primary; classic ESP32 plus CH345G as documented alternative

PCB mounted on metal standoffs, no ribbon cables, secure internal wiring with crimped terminations, passive ventilation allowance, and vibration protection for sensitive components

Five 6.35 mm TS trigger inputs, one status LED per trigger channel, and one general reset button

Autonomous trigger-to-MIDI-to-LED/DMX touring controller for 19-inch 1U rack integration

19-inch 1U rack chassis compliant with DIN 41494 and IEC 60297-3

12V DC barrel input with main ATO fuse, 1500uF bulk capacitor, buck to 5V, LDO to 3.3V, and logic polyfuse

Front edge XLR connectors, rear DC and USB connectors, analog trigger conditioning separated from digital and switching zones, 12V high-current traces at least 3 mm

Implements project plan items for documentation, component metadata normalization, missing power repair, and PCB DRC cleanup tracking

Internal 12 V supply from switched and fused IEC C14 mains inlet

USB-C 16-pin receptacle for native USB MIDI and programming

Prototype v1, low-volume touring hardware validation

4 x M2.5 mounting holes

IEC C14 inlet with integrated switch and fuse feeding internal 12 V supply, five Neutrik panel-mount female XLR-3 outputs, one Neutrik panel-mount female XLR-5 DMX512 output, one MIDI DIN-5 output, and one USB connector for MIDI USB

150 mm x 100 mm

RS-485 DMX512 output on XLR-5 with jumper-selectable 120R termination

DIN 41494, IEC 60297-3 rack compatibility

Pricing & Availability

Distributor

Qty 1

Arrow

$31.54–$40.01

Digi-Key

$26.57–$28.38

LCSC

$53.54–$53.74

Mouser

$90.13–$90.73

TME

$49.52–$49.94

Verical

$43.06–$87.50

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