2 layers20 × 108 mm
Helium
wntrblm/Helium
Helium is a triple 1-to-3 precision buffered multiple and 3-to-1 precision adder
67 parts17
2 layers88.8 × 76 mm
Arch Bridge
SeraphimlabsLLC/Arch_Bridge2DCC-EX to Loconet accessory bus interface
- Size
- 88.8 × 76 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 102
- Nets
- 106
- Pads
- 435
- Tracks, vias
- 1,109, 256
- Pours
- 413
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 27 Jul 2023
- Updated
- 22 Mar 2025
Overview
Arch Bridge is an open-source printed circuit board by SeraphimlabsLLC, from the SeraphimlabsLLC/Arch_Bridge repository on GitHub, published under the AGPL-3.0 licence. It is a 2-layer board of 88.8 × 76 mm with 102 parts on 106 nets, routed with 1,109 tracks and 256 vias.
It is built around the ESP32-S3-WROOM-1-N8, AP63205WU and 74LVC1G04Z, with the TXS0102DCT, 74LVC1G86Z and LM393BID among its other parts. Its parts include 27 resistors, 20 ICs, 17 capacitors, 11 diodes and 3 transistors. It belongs with the interfaces and adapters boards and the ESP32 boards of this library.
Main components
12
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
AP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
74LVC1G04Z
SOT-553-40℃~+125℃ 1 1 1.65V~5.5V 1.7V~2V 200uA 32mA 32mA 5ns@5V,50pF 700mV~800mV 74LVC SOT-553 Inverters ROHSDiodes IncorporatedInverters
TXS0102DCT
SSOP82-Bit Bidirectionnal Voltage-Level Translator for Open-Drain and Push-Pull ApplicationsTexas InstrumentsUncategorised74LVC1G86Z
SOT-553-5-40℃~+125℃ 1 1.65V~5.5V 1.7V~2V 10uA 2 32mA 32mA 5.5ns@5V,50pF 700mV~800mV 74LVC Series XOR Gate SOT-553-5 Logic Gates ROHSDiodes IncorporatedLogic Gates
LM393BID
SOIC-8-40℃~+85℃ 0.5nA 1us 1us 2 2V~36V 3.5nA 36V 370uV 400uA ESD protection Open-drain TTL、CMOS SOIC-8 Comparators ROHSTexas InstrumentsComparators
TLP2770
SOIC6Photocouplers GaAℓAs Infrared LED & Photo ICToshibaUncategorised
TLV1117LV33DCYR
SOT-223-40℃~+125℃@(TJ) 0.003%Vout 1 1.2V@(1A) 12V 1A 3.3V 75dB@(120Hz) Fixed Over Current Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSJSMSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
B3U-1000P
SMD,3x2.5mm-25℃~+70℃ 1.53N 1.6mm 12V 2.5mm 3mm 50mA Round Button SMD(SMT) Tab SPST Surface Mount,Vertical SMD,3x2.5mm Tactile Switches ROHSOmronTactile Switches
MJE2955
TO-220-3L-55℃~+150℃ 1 PNP 10A 1mA 20 2MHz 2W 5V 60V 8V PNP TO-220-3L Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)MMBT3906
SOT-23-55℃~+150℃ 1 PNP 100 100nA 200mA 200mW 300MHz 300mV 40V 5V PNP SOT-23 Bipolar (BJT) ROHSTWGMCBipolar (BJT)
README
README.mdArch_Bridge
DCC-EX to Loconet accessory bus interface with throttle and booster driving.
Additional 2A booster channel for future use
Bidirectional transmission of turnout commands from Loconet to DCC-EX One way Throttle transmission, Loconet to DCC-EX
Fastclock supplied to DCC-EX, still WIP getting it on Loconet
Parts
102| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1uF | Capacitor_SMD:C_1206_3216Metric | C5, C7, C8, C9, C10, C11, C14, CU6, CU11 |
| 5 | 10k | Resistor_SMD:R_1206_3216Metric | R6, R16, R17, R20, R25 |
| 5 | LED | LED_SMD:LED_1206_3216Metric | D1, D2, D4, D7, D8 |
| 4 | 10uF | Capacitor_SMD:C_1210_3225Metric | C1, C3, C4, C15 |
| 4 | 1k | Resistor_SMD:R_1206_3216Metric | R1, R8, R21, R24 |
| 4 | 74LVC1G3208 | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U8, U9, U14, U15 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_4.3mm_M4_DIN965_Pad | , H1, H2, H4 |
| 3 | 150k | Resistor_SMD:R_1206_3216Metric | R4, R22, R23 |
| 3 | 3k | Resistor_SMD:R_1206_3216Metric | R11, R12, R26 |
| 3 | 74LVC1G04 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U4, U10, U16 |
| 3 | RJ12 | Connector_RJ:RJ12_Amphenol_54601 | LOCONET_B1, LOCONET_B2, LOCONET_T1 |
| 3 | TXS0102DCT | Package_SO:SSOP-8_2.95x2.8mm_P0.65mm | U12, U17, U18 |
| 2 | 22k | Resistor_SMD:R_1206_3216Metric | R5, R27 |
| 2 | 47k | Resistor_SMD:R_1206_3216Metric | R3, R19 |
| 2 | B3U-1000P | Button_Switch_SMD:SW_SPST_B3U-1000P-B | BOOT1, RESET1 |
| 2 | Conn_01x04 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | COM2, CONSOLE1 |
| 2 | Conn_02x05_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x05_P2.54mm_Vertical | DCC1, DCC2 |
| 2 | DRV8231ADDAR | Package_SO:Texas_HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias | U7, U13 |
| 2 | TXB0108PWR | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U19, U20 |
| 2 | Z-5.1 | Diode_SMD:D_MiniMELF | D3, D5 |
| 1 | 1.5nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C13 |
| 1 | 100uF | Capacitor_SMD:CP_Elec_8x10 | CB1 |
| 1 | 15nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C12 |
| 1 | 20 | Resistor_SMD:R_2512_6332Metric | R14 |
| 1 | 220k | Resistor_SMD:R_1206_3216Metric | R7 |
| 1 | 22uF | Capacitor_SMD:CP_Elec_5x5.3 | C2 |
| 1 | 250mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 287 | Resistor_SMD:R_1206_3216Metric | R10 |
| 1 | 2A | Fuse:Fuse_Bourns_MF-RHT200 | F2 |
| 1 | 3.3v | Diode_SMD:D_MiniMELF | D11 |
| 1 | 33 3w | Resistor_THT:R_Axial_DIN0516_L15.5mm_D5.0mm_P5.08mm_Vertical | R9 |
| 1 | 330pF | Capacitor_SMD:C_1206_3216Metric | C6 |
| 1 | 4.7k | Resistor_SMD:R_1206_3216Metric | R2 |
| 1 | 4.7uH | Inductor_SMD_Wurth:L_Wurth_WE-LQSH-4020 | L1 |
| 1 | 470 | Resistor_SMD:R_2512_6332Metric | R15 |
| 1 | 74LVC1G86 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U5 |
| 1 | 9.1k 0.1% | Resistor_SMD:R_1206_3216Metric | R13 |
| 1 | 910 0.1% | Resistor_SMD:R_1206_3216Metric | R18 |
| 1 | AP63205WU | Package_TO_SOT_SMD:TSOT-23-6 | U1 |
| 1 | Conn_01x02 | Multicomp Screw terminals:Screw_Terminal_2pin_Multicomp | V12A1 |
| 1 | Conn_01x02 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J5V1 |
| 1 | Conn_01x02 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_2-G_1x02_P5.00mm_Horizontal | V12 |
| 1 | Conn_01x02 | Connector_Phoenix_MC:PhoenixContact_MC_1,5_2-G-3.5_1x02_P3.50mm_Horizontal | J1 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | JP2 |
| 1 | ESP32-S3-WROOM-1 | Espressif:ESP32-S3-WROOM-1U | U11 |
| 1 | Jumper_NC_Small | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | LM393B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | MJE2955 | Package_TO_SOT_THT:TO-220-3_Vertical | Q3 |
| 1 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | MMBT3906 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | PMEG2005EGWX | Diode_SMD:D_SOD-123 | D9 |
| 1 | SMAJ24CA | Diode_SMD:D_SMA | D6 |
| 1 | TLP2770 | Package_SO:SO-6L_10x3.84mm_P1.27mm | U6 |
| 1 | TLV1117LV33DCYR | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Molex-105017-0001 | USB1 |
| 1 | Z-13 | Diode_SMD:D_MiniMELF | D10 |
Questions
How big is the Arch Bridge PCB?
It measures 88.8 × 76 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Arch Bridge use?
102 parts, built around the ESP32-S3-WROOM-1-N8, AP63205WU, 74LVC1G04Z and TXS0102DCT. 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 Arch Bridge KiCad files?
From the SeraphimlabsLLC/Arch_Bridge repository on GitHub, at the commit this page was made from: the board is Hardware/Arch_Bridge/Arch_Bridge.kicad_pcb and its schematic Hardware/Arch_Bridge/Arch_Bridge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arch Bridge design in my own project?
Its repository publishes it under the AGPL-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).
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