# Raijin Drums ## Description 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. ## Project Details - **Owner:** ajalsm - **Created:** 3/19/2026 - **Last Updated:** 3/19/2026 - **Visibility:** Public - **Enclosure Material:** Black anodized aluminum - **System Architecture:** 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 - **MCU Variant:** ESP32-S3-WROOM-1-N16R8 primary; classic ESP32 plus CH345G as documented alternative - **Internal Mechanical Requirements:** PCB mounted on metal standoffs, no ribbon cables, secure internal wiring with crimped terminations, passive ventilation allowance, and vibration protection for sensitive components - **Front Panel Requirements:** Five 6.35 mm TS trigger inputs, one status LED per trigger channel, and one general reset button - **Design Intent:** Autonomous trigger-to-MIDI-to-LED/DMX touring controller for 19-inch 1U rack integration - **Enclosure Standard:** 19-inch 1U rack chassis compliant with DIN 41494 and IEC 60297-3 - **Power Input:** 12V DC barrel input with main ATO fuse, 1500uF bulk capacitor, buck to 5V, LDO to 3.3V, and logic polyfuse - **Layout Notes:** 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 - **Requirements Traceability:** Implements project plan items for documentation, component metadata normalization, missing power repair, and PCB DRC cleanup tracking - **Power Requirements:** Internal 12 V supply from switched and fused IEC C14 mains inlet - **USB Connector Variant:** USB-C 16-pin receptacle for native USB MIDI and programming - **Manufacturing Quantity Target:** Prototype v1, low-volume touring hardware validation - **Mounting:** 4 x M2.5 mounting holes - **Rear Panel Requirements:** 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 - **Board Size:** 150 mm x 100 mm - **DMX Notes:** RS-485 DMX512 output on XLR-5 with jumper-selectable 120R termination - **Compliance:** DIN 41494, IEC 60297-3 rack compatibility ## Key Components ### D1 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f.md) - Part Type: Diode - Manufacturer Name: Diodes Incorporated - Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf - Role: Clamp - Manufacturer Part Number: 1N4148WS-7-F - Role Details: Piezo trigger clamp diode to 3.3V rail - Package: SOD-323 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### D2 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f.md) - Role Details: Piezo trigger clamp diode to 3.3V rail - Package: SOD-323 - Part Type: Diode - Manufacturer Name: Diodes Incorporated - Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf - Role: Clamp - Manufacturer Part Number: 1N4148WS-7-F - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### D3 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f.md) - Package: SOD-323 - Role: Clamp - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1N4148WS-7-F - Role Details: Piezo trigger clamp diode to 3.3V rail - Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf - Part Type: Diode - Manufacturer Name: Diodes Incorporated **Pins:** - A [pin 2] - K [pin 1] ### D4 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f.md) - Manufacturer Part Number: 1N4148WS-7-F - Role: Clamp - Role Details: Piezo trigger clamp diode to 3.3V rail - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Manufacturer Name: Diodes Incorporated - Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf - Package: SOD-323 **Pins:** - A [pin 2] - K [pin 1] ### D5 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f.md) - Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf - Role Details: Piezo trigger clamp diode to 3.3V rail - Part Type: Diode - Manufacturer Name: Diodes Incorporated - Package: SOD-323 - Role: Clamp - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1N4148WS-7-F **Pins:** - A [pin 2] - K [pin 1] ### F1 — [178.6164.0001](https://www.flux.ai/adrian95/178p6164p0001.md) - Part Type: Fuse - Current Rating: 15A - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Role: Fuse Holder - Package: ATO Holder - Role Details: One main fuse holder and five LED output fuse holders - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-flr-datasheet?assetguid=BEF6771D-7AE2-4B18-8F55-8CDE6402100A - Manufacturer Part Number: 178.6164.0001 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### F2 — [178.6164.0001](https://www.flux.ai/adrian95/178p6164p0001.md) - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Current Rating: 15A - Part Type: Fuse - Role: Fuse Holder - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-flr-datasheet?assetguid=BEF6771D-7AE2-4B18-8F55-8CDE6402100A - Manufacturer Part Number: 178.6164.0001 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: One main fuse holder and five LED output fuse holders - Package: ATO Holder **Pins:** - P1 [pin 1] - P2 [pin 2] ### F3 — [178.6164.0001](https://www.flux.ai/adrian95/178p6164p0001.md) - Role Details: One main fuse holder and five LED output fuse holders - Package: ATO Holder - Role: Fuse Holder - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-flr-datasheet?assetguid=BEF6771D-7AE2-4B18-8F55-8CDE6402100A - Manufacturer Part Number: 178.6164.0001 - Part Type: Fuse - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Current Rating: 15A **Pins:** - P1 [pin 1] - P2 [pin 2] ### F4 — [178.6164.0001](https://www.flux.ai/adrian95/178p6164p0001.md) - Role Details: One main fuse holder and five LED output fuse holders - Role: Fuse Holder - Part Type: Fuse - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Current Rating: 15A - Package: ATO Holder - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 178.6164.0001 - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-flr-datasheet?assetguid=BEF6771D-7AE2-4B18-8F55-8CDE6402100A **Pins:** - P1 [pin 1] - P2 [pin 2] ### F5 — [178.6164.0001](https://www.flux.ai/adrian95/178p6164p0001.md) - Part Type: Fuse - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Role: Fuse Holder - Current Rating: 15A - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-flr-datasheet?assetguid=BEF6771D-7AE2-4B18-8F55-8CDE6402100A - Package: ATO Holder - Manufacturer Part Number: 178.6164.0001 - Role Details: One main fuse holder and five LED output fuse holders - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### F6 — [178.6164.0001](https://www.flux.ai/adrian95/178p6164p0001.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 178.6164.0001 - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-flr-datasheet?assetguid=BEF6771D-7AE2-4B18-8F55-8CDE6402100A - Role Details: One main fuse holder and five LED output fuse holders - Package: ATO Holder - Current Rating: 15A - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Role: Fuse Holder - Part Type: Fuse **Pins:** - P1 [pin 1] - P2 [pin 2] ### F7 — [2016L050MR](https://www.flux.ai/adrian95/2016l050mr.md) - Part Type: Fuse - Package: 2016 - Role Details: Logic rail resettable overcurrent protection - Current Rating: 20A - Manufacturer Name: Littelfuse Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse_ptc_2016l_datasheet.pdf?assetguid=0a3f187e-62df-469f-85be-57fe3e3b4668 - Role: Polyfuse - Manufacturer Part Number: 2016L050MR **Pins:** - P1 [pin 1] - P2 [pin 2] ### IC1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n16r8.md) - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Package: Module - Manufacturer Name: Espressif Systems - Mounting: PCB secured on metal standoffs - Part Type: Module - Mechanical Notes: Internal PCB subassembly for 19-inch 1U chassis; keep vibration-sensitive parts mechanically supported - License: https://creativecommons.org/licenses/by/4.0/ - Role: MCU - Role Details: Primary ESP32-S3 module with native USB MIDI support - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_wroom_1_wroom_1u_datasheet_en-2930317.pdf **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND_1 [pin 1] - GND_10 [pin 48] - GND_11 [pin 49] - GND_2 [pin 40] - GND_3 [pin 41] - GND_4 [pin 42] - GND_5 [pin 43] - GND_6 [pin 44] - GND_7 [pin 45] - GND_8 [pin 46] - GND_9 [pin 47] - IO0 [pin 27] - IO1 [pin 39] - IO10 [pin 18] - IO11 [pin 19] - IO12 [pin 20] - IO13 [pin 21] - IO14 [pin 22] - IO15 [pin 8] - IO16 [pin 9] - IO17 [pin 10] - IO18 [pin 11] - IO19 [pin 13] - IO2 [pin 38] - IO20 [pin 14] - IO21 [pin 23] - IO3 [pin 15] - IO35 [pin 28] - IO36 [pin 29] - IO37 [pin 30] - IO38 [pin 31] - IO39 [pin 32] - IO4 [pin 4] - IO40 [pin 33] - IO41 [pin 34] - IO42 [pin 35] - IO45 [pin 26] - IO46 [pin 16] - IO47 [pin 24] - IO48 [pin 25] - IO5 [pin 5] - IO6 [pin 6] - IO7 [pin 7] - IO8 [pin 12] - IO9 [pin 17] - RXD0 [pin 36] - TXD0 [pin 37] ### IC2 — [MAX485CSA+](https://www.flux.ai/adrian95/max485csaplus.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MAX485CSA+ - Role: RS-485 Driver - Part Type: Integrated Circuit - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max1487-max491.pdf - Package: SOIC-8 - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Role Details: DMX512 output transceiver **Pins:** - ~RE [pin 2] - A [pin 6] - B [pin 7] - DE [pin 3] - DI [pin 4] - GND [pin 5] - RO [pin 1] - VCC [pin 8] ### J1 — [UJ20-C-V-G-SMT-P16-TR-65](https://www.flux.ai/adrian95/uj20-c-v-g-smt-p16-tr-65.md) - Package: USB-C 16-pin - Wiring: Short secured wiring only; no ribbon cable - Package or Case Code: UJ20CVGSMTP16TR65 - Role Details: Rear panel USB connector for MIDI over native ESP32-S3 USB - Role: USB Connector - Manufacturer Name: Same Sky - Part Type: USB C - Connector Mount: Panel mount or securely retained panel-access assembly - Panel: Rear - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: UJ20-C-V-G-SMT-P16-TR-65 - Datasheet URL: https://www.cuidevices.com/product/resource/digikeypdf/uj20-c-v-g-smt-p16-tr-65.pdf **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - DUMMY_1 [pin 1] - DUMMY_2 [pin 2] - DUMMY_3 [pin 3] - DUMMY_4 [pin 4] - GND_1 [pin A1] - GND_2 [pin A12] - GND_3 [pin B1] - GND_4 [pin B12] - SBU1 [pin A8] - SBU2 [pin B8] - VBUS_1 [pin A4] - VBUS_2 [pin A9] - VBUS_3 [pin B4] - VBUS_4 [pin B9] ### J10 — [SJ-63073E](https://www.flux.ai/vasy_skral/sj-63073e.md) - Wiring: Crimped discrete harness; no ribbon cable - Role Details: Piezo trigger jack input - Connector Mount: Panel mount - Manufacturer Name: CUI Devices - Panel: Front - Role: Trigger Input Connector - Part Type: Connector - Package: 6.35mm Jack - Manufacturer Part Number: SJ-63073E - Datasheet URL: https://www.cuidevices.com/product/resource/sj-6307.pdf **Pins:** - ~ [pin 6] - ~ [pin 2] - ~ [pin 1] - ~ [pin 5] - ~ [pin 4] - ~ [pin 3] ### J11 — [SJ-63073E](https://www.flux.ai/vasy_skral/sj-63073e.md) - Manufacturer Part Number: SJ-63073E - Role Details: Piezo trigger jack input - Connector Mount: Panel mount - Datasheet URL: https://www.cuidevices.com/product/resource/sj-6307.pdf - Panel: Front - Package: 6.35mm Jack - Wiring: Crimped discrete harness; no ribbon cable - Role: Trigger Input Connector - Part Type: Connector - Manufacturer Name: CUI Devices **Pins:** - ~ [pin 6] - ~ [pin 2] - ~ [pin 1] - ~ [pin 5] - ~ [pin 4] - ~ [pin 3] ### J2 — [NC3FAH2](https://www.flux.ai/adrian95/nc3fah2.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: LED Output Connector - Package: XLR-3 Panel - Connector Gender: Female - Wiring: Crimped discrete harness; no ribbon cable - Part Type: Connector - Connector Type: XLR Connector - Manufacturer Part Number: NC3FAH2 - Role Details: Rear panel XLR-3 female output 1 for touring chassis; panel-mounted Neutrik connector wired by crimped internal harness - Connector Mount: Panel mount - Panel: Rear - Manufacturer Name: Neutrik - Datasheet URL: https://www.neutrik.com/en/product/NC3FAH2.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - G [pin G] ### J3 — [NC3FAH2](https://www.flux.ai/adrian95/nc3fah2.md) - Connector Type: XLR Connector - Role Details: Rear panel XLR-3 female output 2 for touring chassis; panel-mounted Neutrik connector wired by crimped internal harness - Panel: Rear - Connector Gender: Female - Package: XLR-3 Panel - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.neutrik.com/en/product/NC3FAH2.pdf - Manufacturer Name: Neutrik - Connector Mount: Panel mount - Wiring: Crimped discrete harness; no ribbon cable - Role: LED Output Connector - Manufacturer Part Number: NC3FAH2 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - G [pin G] ### J4 — [NC3FAH2](https://www.flux.ai/adrian95/nc3fah2.md) - Manufacturer Name: Neutrik - Datasheet URL: https://www.neutrik.com/en/product/NC3FAH2.pdf - Connector Mount: Panel mount - Panel: Rear - Role Details: Rear panel XLR-3 female output 3 for touring chassis; panel-mounted Neutrik connector wired by crimped internal harness - Manufacturer Part Number: NC3FAH2 - Connector Type: XLR Connector - Wiring: Crimped discrete harness; no ribbon cable - Connector Gender: Female - Role: LED Output Connector - Part Type: Connector - Package: XLR-3 Panel - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - G [pin G] ### J5 — [NC3FAH2](https://www.flux.ai/adrian95/nc3fah2.md) - Panel: Rear - Part Type: Connector - Connector Gender: Female - License: https://creativecommons.org/licenses/by/4.0/ - Connector Mount: Panel mount - Wiring: Crimped discrete harness; no ribbon cable - Connector Type: XLR Connector - Package: XLR-3 Panel - Manufacturer Part Number: NC3FAH2 - Role: LED Output Connector - Datasheet URL: https://www.neutrik.com/en/product/NC3FAH2.pdf - Manufacturer Name: Neutrik - Role Details: Rear panel XLR-3 female output 4 for touring chassis; panel-mounted Neutrik connector wired by crimped internal harness **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - G [pin G] ### J6 — [NC3FAH2](https://www.flux.ai/adrian95/nc3fah2.md) - Manufacturer Part Number: NC3FAH2 - Datasheet URL: https://www.neutrik.com/en/product/NC3FAH2.pdf - Package: XLR-3 Panel - Role: LED Output Connector - Manufacturer Name: Neutrik - License: https://creativecommons.org/licenses/by/4.0/ - Connector Gender: Female - Wiring: Crimped discrete harness; no ribbon cable - Part Type: Connector - Connector Type: XLR Connector - Role Details: Rear panel XLR-3 female output 5 for touring chassis; panel-mounted Neutrik connector wired by crimped internal harness - Panel: Rear - Connector Mount: Panel mount **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - G [pin G] ### J7 — [SJ-63073E](https://www.flux.ai/vasy_skral/sj-63073e.md) - Panel: Front - Role: Trigger Input Connector - Connector Mount: Panel mount - Part Type: Connector - Manufacturer Part Number: SJ-63073E - Datasheet URL: https://www.cuidevices.com/product/resource/sj-6307.pdf - Wiring: Crimped discrete harness; no ribbon cable - Role Details: Piezo trigger jack input - Package: 6.35mm Jack - Manufacturer Name: CUI Devices **Pins:** - ~ [pin 6] - ~ [pin 2] - ~ [pin 1] - ~ [pin 5] - ~ [pin 4] - ~ [pin 3] ### J8 — [SJ-63073E](https://www.flux.ai/vasy_skral/sj-63073e.md) - Panel: Front - Part Type: Connector - Package: 6.35mm Jack - Manufacturer Part Number: SJ-63073E - Connector Mount: Panel mount - Datasheet URL: https://www.cuidevices.com/product/resource/sj-6307.pdf - Role: Trigger Input Connector - Wiring: Crimped discrete harness; no ribbon cable - Manufacturer Name: CUI Devices - Role Details: Piezo trigger jack input **Pins:** - ~ [pin 6] - ~ [pin 2] - ~ [pin 1] - ~ [pin 5] - ~ [pin 4] - ~ [pin 3] ### J9 — [SJ-63073E](https://www.flux.ai/vasy_skral/sj-63073e.md) - Datasheet URL: https://www.cuidevices.com/product/resource/sj-6307.pdf - Manufacturer Part Number: SJ-63073E - Part Type: Connector - Role Details: Piezo trigger jack input - Panel: Front - Package: 6.35mm Jack - Connector Mount: Panel mount - Manufacturer Name: CUI Devices - Wiring: Crimped discrete harness; no ribbon cable - Role: Trigger Input Connector **Pins:** - ~ [pin 6] - ~ [pin 2] - ~ [pin 1] - ~ [pin 5] - ~ [pin 4] - ~ [pin 3] ### PS1 — [NC5FAH](https://www.flux.ai/lcsc/nc5fah.md) - Panel: Rear - Wiring: Crimped discrete harness; no ribbon cable - LCSC Part Number: C368501 - Role Details: Rear panel XLR-5 female DMX512 output for touring chassis; panel-mounted Neutrik connector wired by crimped internal harness - Manufacturer Part Number: NC5FAH - Connector Mount: Panel mount - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_Neutrik-NC5FAH_C368501.html - Package: XLR-5 Through Hole - Manufacturer Name: NEUTRIK(优曲克) - JLCPCB Part Class: Extended Part - Part Type: Circular Connectors & Cable Connectors - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_Neutrik-NC5FAH_C368501.pdf - Role: DMX Output Connector - Package or Case Code: CONN-TH_NC5FAH **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - G [pin G] ### U1 — [74AHCT125D,118](https://www.flux.ai/lcsc/74ahct125dc118.md) - Role: Level Shifter - Part Type: Buffers / Drivers - Product Info Url: https://lcsc.com/product-detail/presales_Nexperia-74AHCT125D-118_C554502.html - LCSC Part Number: C554502 - Package or Case Code: SOP-14_L8.6-W3.9-P1.27-LS6.0-BL - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407261709_Nexperia-74AHCT125D-118_C554502.pdf - Manufacturer Name: Nexperia - Manufacturer Part Number: 74AHCT125D,118 - Role Details: WS281x data level shifting from ESP32 3.3V to 5V - JLCPCB Part Class: Extended Part - Package: SOP-14 **Pins:** - ~{1OE} [pin 1] - ~{2OE} [pin 4] - ~{3OE} [pin 10] - ~{4OE} [pin 13] - 1A [pin 2] - 1Y [pin 3] - 2A [pin 5] - 2Y [pin 6] - 3A [pin 9] - 3Y [pin 8] - 4A [pin 12] - 4Y [pin 11] - GND [pin 7] - VCC [pin 14] ### U2 — [74AHCT125D,118](https://www.flux.ai/lcsc/74ahct125dc118.md) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: 74AHCT125D,118 - Manufacturer Name: Nexperia(安世) - Package: SOP-14 - Part Type: Buffers / Drivers - Product Info Url: https://lcsc.com/product-detail/presales_Nexperia-74AHCT125D-118_C554502.html - Role: Level Shifter - Package or Case Code: SOP-14_L8.6-W3.9-P1.27-LS6.0-BL - Role Details: WS281x data level shifting from ESP32 3.3V to 5V - LCSC Part Number: C554502 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407261709_Nexperia-74AHCT125D-118_C554502.pdf **Pins:** - ~{1OE} [pin 1] - ~{2OE} [pin 4] - ~{3OE} [pin 10] - ~{4OE} [pin 13] - 1A [pin 2] - 1Y [pin 3] - 2A [pin 5] - 2Y [pin 6] - 3A [pin 9] - 3Y [pin 8] - 4A [pin 12] - 4Y [pin 11] - GND [pin 7] - VCC [pin 14] ### U3 — [6N138](https://www.flux.ai/vasyl/6n138.md) - Manufacturer Part Number: 6N138 - Role Details: MIDI DIN interface isolation component - Role: Optocoupler - Manufacturer Name: Broadcom Limited - Mechanical Notes: Through-hole isolator to be supported by rigid PCB on metal standoffs; avoid harness stress on solder joints - Package: DIP-8 - Part Type: Isolator - Datasheet URL: https://docs.broadcom.com/docs/AV02-1359EN **Pins:** - C1 - C2 - GND - NC - NC - VCC - VO1 - VO2 ### U4 — [LM2596S-5.0/NOPB](https://www.flux.ai/adrian95/lm2596s-5p0nopb.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/lm2596.pdf - Package: TO-263-6 - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - Role Details: Primary 12V to 5V logic supply - Mechanical Notes: Allow passive ventilation around regulator and secure for vibration resistance - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LM2596S-5.0/NOPB - Role: Buck Regulator **Pins:** - ~ON~/OFF [pin 5] - FEEDBACK [pin 4] - GND_TAB [pin 6] - GROUND [pin 3] - OUTPUT [pin 2] - VIN [pin 1] ### U5 — [MCP1700T-3302E-TT](https://www.flux.ai/adrian95/mcp1700t-3302e-tt.md) - Role: LDO - Part Type: Integrated Circuit - Manufacturer Part Number: MCP1700T-3302E/TT - Role Details: 5V to 3.3V regulator for ESP32-S3 and low voltage logic - Package: SOT-23-3 - Manufacturer Name: Microchip Technology - Datasheet URL: https://datasheet.octopart.com/MCP1700T-3302E/TT-Microchip-datasheet-532260.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - GND [pin 1] - VI [pin 3] - VO [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ajalsm/raijin-drums](https://www.flux.ai/ajalsm/raijin-drums).* --- *Generated from [https://www.flux.ai/ajalsm/raijin-drums](https://www.flux.ai/ajalsm/raijin-drums)*