4 layers96 × 100 mm
OtterCastAmp
Ottercast/OtterCastAmp
OtterCastAmp is an open-source WiFi Speaker amplifier, based on a Sochip S3 SoC. Powered by any USB PD adapter for up to 100W of music.
272 parts341MIT
2 layers196.2 × 67.3 mm
RelControll v1.1 fix
sevenist/SevenistController-VTM-HardwareCustom PCB for the Sevenist Controller, a 64-track MIDI CC control surface built around an ESP32-S3 Zero.
- Size
- 196.2 × 67.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 52
- Pads
- 192
- Tracks, vias
- 347, 38
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 25 Aug 2026
- Updated
- 30 Aug 2026
Overview
RelControll v1.1 fix is an open-source printed circuit board by sevenist, from the sevenist/SevenistController-VTM-Hardware repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 196.2 × 67.3 mm with 38 parts on 52 nets, routed with 347 tracks and 38 vias.
It is built around the 6N137S, CD74HC4067SM96 and WS2812B, with the PJ-3270 and PEC11R-4015F-S0024 among its other parts. Its parts include 9 diodes, 7 resistors, 4 capacitors, 3 ICs and 2 connectors. It belongs with the ESP32 boards of this library.
Main components
5
6N137S
SOP-8-40℃~+85℃ 1 1.8V 100mW 10Mbps 10kV/us 2.5kV 4.5V~5.5V 50mA 5V 5mA 75ns 75ns DC SOP-8 Logic Output Optoisolators ROHSUMWLogic Output Optoisolators
CD74HC4067SM96
SSOP-24-208mil-55℃~+125℃ 15ns 16 16:1 2V~6V 5pF 70Ω 89MHz SSOP-24-208mil Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
PJ-3270
插件-20℃~+70℃ 3.5mm Headphone Jack 30V 500mA 插件 Audio Connectors ROHSXKB ConnectionAudio Connectors (Headphones)
PEC11R-4015F-S0024
插件插件 Rotary Encoders ROHSBournsRotary Encoders
README
README.mdSevenist Controller — Hardware (VTM)
Custom PCB for the Sevenist Controller, a 64-track MIDI CC control surface built around an ESP32-S3 Zero.
This repository holds the KiCad project, schematics and fabrication files for the board. The code for it : VTM Firmware repository.
Status: updated, should work but not tested yet. will upload soon some BOM file. Fabricate at your own risk until it's confirmed working.
Repository layout
relControll.kicad_pro / .kicad_sch / .kicad_pcb KiCad 10 project, schematic, board
images/ Board rendersLicense
Released under the GPL-3.0 license.
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | RV112FF-40B1-15F-0B20K-0068 | FP_VRAC:RV112FF40B115F0B20K0068 | VR1, VR2, VR3, VR4, VR5, VR6, VR7, VR8 |
| 8 | WS2812B | PCM_JLCPCB:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 3 | 220Ω | PCM_JLCPCB:R_0805 | R9, R11, R12 |
| 2 | 100nF | PCM_JLCPCB:C_0805 | C2, C3 |
| 2 | 10kΩ | PCM_JLCPCB:R_0805 | R16, R17 |
| 2 | Conn_01x06_Socket | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3, J4 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C1 |
| 1 | 100uF smd | Capacitor_SMD:C_Elec_6.3x5.4 | C1 |
| 1 | 10kΩ | EasyEDA:R0805 | R15 |
| 1 | 1N4148 | keyboard_parts.pretty-master:D_SOD123_axial | D9 |
| 1 | 470Ω | PCM_JLCPCB:R_0805 | R10 |
| 1 | 6N137S_C20612601 | Package_SO:SOP-8_6.605x9.655mm_P2.54mm | U3 |
| 1 | CD74HC4067SM96 | EasyEDA:SSOP-24_L8.1-W5.3-P0.65-LS7.8-BL | U1 |
| 1 | ESP32-S3-ZERO | LibVrac:MODULE_ESP32-S3-ZERO | U4 |
| 1 | Housing | Symbol:Screw_Generic_2.0x3.0mm_SilkScreen | N1 |
| 1 | IN | EasyEDA:AUDIO-TH_PJ-3270 | MIDI1 |
| 1 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5_ISO14580_Pad | H1 |
| 1 | OUT | EasyEDA:AUDIO-TH_PJ-3270 | MIDI2 |
| 1 | PEC11R-4015F-S0024 | EasyEDA:SW-TH_PEC12R-4130F-S0012 | SW1 |
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Questions
How big is the RelControll v1.1 fix PCB?
It measures 196.2 × 67.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RelControll v1.1 fix use?
38 parts, built around the 6N137S, CD74HC4067SM96, WS2812B and PJ-3270. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the RelControll v1.1 fix KiCad files?
From the sevenist/SevenistController-VTM-Hardware repository on GitHub, at the commit this page was made from: the board is relControll_v1.1_fix.kicad_pcb and its schematic leds.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RelControll v1.1 fix design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).