4 layers83 × 167 mm
Front rear dual can-2026-11-02 before testpoint swap
johnb302/cmu-embedded
Repo for distributed embedded systems at CMU, 18-449
327 parts
2 layers68.4 × 36.7 mm
Emf beacon
PolybiusBiotech/led_beaconThe PCBA and firmware for the controllable LED Beacons.
- Size
- 68.4 × 36.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 134
- Nets
- 113
- Pads
- 445
- Tracks, vias
- 694, 300
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 20 Apr 2026
- Updated
- 20 Oct 2026
Overview
Emf beacon is an open-source printed circuit board by PolybiusBiotech, from the PolybiusBiotech/led_beacon repository on GitHub. It is a 2-layer board of 68.4 × 36.7 mm with 134 parts on 113 nets, routed with 694 tracks and 300 vias.
It is built around the CA-IS3092W, ESP32-C3-WROOM-02-H4 and TPS565208DDC, with the TPS82140SILR, AO3400A and B6B-PH-SM4-TB among its other parts. Its parts include 44 resistors, 37 capacitors, 14 connectors, 11 transistors and 6 ICs. It belongs with the ESP32 and RISC-V boards of this library.
Main components
12
CA-IS3092W
SOIC-16-300mil-40℃~+125℃ 150kV/us 3.3V、5V 3.3V、5V 5000 500Kbps Half-Duplex SOIC-16-300mil Isolated RS-485/422 Transceivers with power ROHSChipanalogIsolated RS-485/422 Transceivers With Power
ESP32-C3-WROOM-02-H4
SMD,20x18mm-105dBm -40℃~+105℃ 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,20x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TPS565208DDC
TSOT-23-6-40℃~+125℃@(TJ) 1 4.5V~17V 500kHz 5A 760mV~7V Adjustable Buck Buck Built-in Yes TSOT-23-6 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
TPS82140SILR
USIP-8(3x2.8)-40℃~+110℃@(TJ) 1 20uA 2A 2MHz 3V~17V 900mV~6V Adjustable Buck Buck Built-in Yes USIP-8(3x2.8) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
B6B-PH-SM4-TB
SMD,P=2mm-25℃~+85℃ 1 100V 15.95mm 1x6P 2A 2mm 6 6.6mm 6P 7mm Auxiliary Solder Pin Beige Copper alloy PA PH Surface Mount,Vertical Tin UL94V-0 SMD,P=2mm Wire To Board Connector ROHSJSTWire To Board Connector
B16WS
SOD-323-55℃~+150℃ 100uA@60V 10A 1A 60V 700mV@1A Independent SOD-323 Schottky Diodes ROHShongjiachengSchottky DiodesBAT54WS
SOD-3231 Independent 100mA 1V@100mA 2uA@25V 30V 600mA SOD-323 Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
BZT52C10
SOD-123-65℃~+150℃ 1 Independent 10V 150Ω 200nA 20Ω 370mW 9.4V~10.6V SOD-123 Zener Diodes ROHSDiodes IncorporatedZener Diodes
DMP3013SFV
PowerDI3333-8-55℃~+150℃ 1 P-Channel 1.674nF 1.94W 17mΩ@4.5V 230pF 30V 33.7nC@10V 35A 3V P-Channel PowerDI3333-8 MOSFETs ROHSDiodes IncorporatedMOSFETs
KT-0603R
0603-40℃~+85℃ 1.6mm x 0.8mm square LED 1.8V~2.4V 120° 20mA 300mcd 40mW 615nm~630nm 645nm Discrete Diode Red Water Clear 0603 LED Indication - Discrete ROHSHubei KENTO ElecLED Indication - Discrete
MWSA0804S-3R3MT
SMD,8.8x8.2mm12.5A 12A 15mΩ 3.3uH Molded Inductor ±20% SMD,8.8x8.2mm Molding Power Inductors ROHSSunlordPower Inductors
README
README.md🚨 LED Beacon 🚨
Upgrading cheap LED beacons for professional DMX/Art-Net stage control.
🚀 Manufacturing Status
- Design: Completed
- Prototyping: Completed
- Production: Completed
📋 Quick Specs
- Power: +12V ±30% @ 2A
- LEDS: 10x strings of 6 LEDs
- MCU: ESP32-C3-WROOM-02
- Connectivity: DMX512 via 5 pin XLRs and WiFi
📂 Project Structure
/hardware: KiCAD project files (Version 9.0.7)./firmware: PlatformIO project (Arduino/ESP-IDF framework)./mechanical: 3D-printable housing (.STEP)./docs: Specification, schematics and design calculations.
🛠 Setup & Development
Hardware
- Library Dependencies: All footprints/symbols are [local to the repo / use standard KiCAD libs].
- CI/CD: Schematics are automatically exported to
/docson every push.
Firmware
- Open the
/firmwarefolder in VS Code. - Ensure the PlatformIO extension is installed.
- Connect your hardware via USB C port and click Upload.
📝 User Guide
- Apply power via DC connector, 12V ±30% from a 3A capable supply.
- Attach to DMX chain with 2x XLR 5pin cables
- If at the end of the bus use a terminator plug
- Select a DMX address with the DIP switch
- This light consumes 20 slots so avoid address above 492.
- Ensure that this light is >20 slots away from the next lights.
- Light checks DIP switch and updated the DMX address every 2.5seconds.
- Disable the WiFi AP with the DIP switch unless needed for diagnostics
- Use your DMX controller to send packets on the DMX chain.
- Slots 1 to 10 control the brightness per channel
0x00is off0xFFis full brightness
- Slots 11 to 20 control the strobe effect per channel
0x00is fully on0x01strobes at 0.2Hz0xFFstrobes at 20Hz
- Slots 1 to 10 control the brightness per channel
- Enjoy!
Commissioned for Null Sector for EMF Camp 2026.
Parts
134| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100R | Resistor_SMD:R_0603_1608Metric | R16, R17, R18, R19, R20, R21, R22, R23, R24, R25 |
| 10 | 10R | Resistor_SMD:R_0603_1608Metric | R9, R44, R45, R46, R47, R48, R49, R50, R51, R52 |
| 10 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R7, R12, R13, R14, R26, R27, R30, R41, R43 |
| 10 | 10nF | Capacitor_SMD:C_0603_1608Metric | C28, C29, C30, C31, C32, C33, C34, C35, C36, C37 |
| 10 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10 |
| 10 | Conn_01x02 | Pinski1_parts:LED_Stick | J4, J5, J6, J7, J8, J9, J10, J11, J12, J13 |
| 9 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C4, C6, C8, C9, C11, C12, C25, C26 |
| 9 | 10uF 25V | Capacitor_SMD:C_0805_2012Metric | C1, C7, C10, C13, C17, C20, C21, C22, C27 |
| 7 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7 |
| 4 | MountingHole | MountingHole:MountingHole_4.3mm_M4 | H1, H2, H3, H4 |
| 3 | 22uF 10V | Capacitor_SMD:C_0805_2012Metric | C18, C19, C40 |
| 2 | 1k0 | Resistor_SMD:R_0603_1608Metric | R4, R5 |
| 2 | 4k7 | Resistor_SMD:R_0603_1608Metric | R10, R11 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 75k | Resistor_SMD:R_0603_1608Metric | R29, R54 |
| 2 | B6B-PH-SM4-TB | Connector_JST:JST_PH_B6B-PH-SM4-TB_1x06-1MP_P2.00mm_Vertical | J2, J3 |
| 1 | 0R0 | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 100nF 50V | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 100uF 16V | Capacitor_SMD:CP_Elec_6.3x5.7 | C16 |
| 1 | 100uF 25V | Capacitor_SMD:CP_Elec_6.3x7.7 | C15 |
| 1 | 1M0 | Resistor_SMD:R_1206_3216Metric | R8 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C39 |
| 1 | 1nF 2kV | Capacitor_SMD:C_1206_3216Metric | C5 |
| 1 | 1uF 50V | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 24k | Resistor_SMD:R_0603_1608Metric | R55 |
| 1 | 2k7 | Resistor_SMD:R_0603_1608Metric | R40 |
| 1 | 470R | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 62k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | B16WS | Diode_SMD:D_SOD-323 | D5 |
| 1 | BAT54WS | Diode_SMD:D_SOD-323 | D6 |
| 1 | BZT52C10 | Diode_SMD:D_SOD-123 | D2 |
| 1 | CA-IS3092W | Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm | U6 |
| 1 | Conn_01x02 | emf_beacon_library:MX250-3.5-02P-A-GY01-Cu-A | J14 |
| 1 | DMP3013SFV | Package_SON:Diodes_PowerDI3333-8 | Q12 |
| 1 | ESP32-C3-WROOM-02 | RF_Module:ESP32-C3-WROOM-02 | U1 |
| 1 | KT-0603R | LED_SMD:LED_0603_1608Metric | LED1 |
| 1 | MCP23017T-E/SS | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U2 |
| 1 | MWSA0804S-3R3MT | Inductor_SMD:L_Vishay_IHLP-3232 | L1 |
| 1 | NCP18XH103F03RB | Resistor_SMD:R_0603_1608Metric | TH1 |
| 1 | PCA9685PW,118 | Package_SO:TSSOP-28_4.4x9.7mm_P0.65mm | U4 |
| 1 | SM712 | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | SMAJ15A | Diode_SMD:D_SMA | D3 |
| 1 | SW_DIP_x10 | Button_Switch_THT:SW_DIP_SPSTx10_Slide_9.78x27.58mm_W7.62mm_P2.54mm | SW1 |
| 1 | TPS565208 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | TPS82140SILR | Package_LGA:Texas_SIL0008D_MicroSiP-8-1EP_2.8x3mm_P0.65mm_EP1.1x1.9mm | U7 |
| 1 | TS-1088-AR02016 | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J1 |
The 133 most common of 134 parts.
Questions
How big is the Emf beacon PCB?
It measures 68.4 × 36.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Emf beacon use?
134 parts, built around the CA-IS3092W, ESP32-C3-WROOM-02-H4, TPS565208DDC and TPS82140SILR. 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 Emf beacon KiCad files?
From the PolybiusBiotech/led_beacon repository on GitHub, at the commit this page was made from: the board is hardware/emf_beacon.kicad_pcb and its schematic hardware/ctrl.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Emf beacon design in my own project?
Its repository states no licence, so its author keeps all rights: ask PolybiusBiotech before reusing the design.
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