4 layers56.8 × 100 mm
UCB board
bartkepl/UCB_board
Control board for testing concepts with SCPI, UART, USB, RS485 and ETHERNET in pseudo 3U eurocard format
202 partsMIT
2 layers160 × 100 mm
RDE board
bartkepl/RDE_boardResistance DEcade with SCPI, UART, USB, RS485 and ETHERNET in 3U eurocard format
- Size
- 160 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 388
- Nets
- 363
- Pads
- 1,382
- Tracks, vias
- 2,026, 692
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Feb 2026
- Updated
- 14 Jul 2026
Overview
RDE board is an open-source printed circuit board by bartkepl, from the bartkepl/RDE_board repository on GitHub, published under the MIT licence. It is a 2-layer board of 160 × 100 mm with 388 parts on 363 nets, routed with 2,026 tracks and 692 vias.
It is built around the USBLC6-2SC6, FM24C64B-G and SN65HVD75DR, with the W5500, TQ2-5V and ESD5Z3.3T1G among its other parts. Its parts include 140 resistors, 93 diodes, 58 capacitors, 39 switches and 13 ICs. It belongs with the interfaces and adapters boards and the STM32 boards of this library.
Main components
12
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
FM24C64B-G
-SOIC-8 FRAM ROHSInfineon TechnologiesFRAM
SN65HVD75DR
SOP-8SOP-8 RS-485 / RS-422 ICs ROHSElecSuperRS-485 / RS-422 ICs
W5500
LQFP-48_7x7-40℃~+85℃ 10BASE-T、100BASE-TX 3.3V 32KB SPI SPI Wake-up function、Programmable LED indication、Low-power mode Yes LQFP-48(7x7) Ethernet Controllers ROHSWIZNETEthernet Controllers
TQ2-5V
DIP,14x9mm-40℃~+70℃ 110V@DC、125V@AC 140mW 14mm 178Ω 1A 3ms 3ms 500mA@125VAC、1A@30VDC 50mΩ 5V 5mm 9mm Silver + Gold Plated Two sets of changeover: 2C (DPDT) DIP,14x9mm Signal Relays ROHSPanasonicSignal Relays
ESD5Z3.3T1G
SOD-523-55℃~+125℃ 1 110pF 11A 14V 150W 200nA 3.3V 5V ESD IEC 61000-4-2、IEC 61000-4-4 Unidirectional SOD-523 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
LQH32PN101MN0L
1210100uH 180mA 250mA 3.24Ω Consumer grade ±20% 1210 Inductors (SMD) ROHSMurataPower Inductors
SMF5.0CA
SOD-123FLESD And Surge Protection (TVS/ESD)hongjiacheng
B82464P4105M000
-1mH 2.2Ω 340mA 350mA ±20% - Power Inductors ROHSTDKPower Inductors
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsCDSOT23-SM712
SOT-23-55℃~+125℃ 13.3V 150W 15V、25V 500nA 75pF 7A 7V、12V Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSGOODWORKESD And Surge Protection (TVS/ESD)
H1102NL
SMD-16PXFMR-SMD New Arrivals ROHSPulse ElecUncategorised
README
README.mdRDE (Resistance DEcade)
Resistance DEcade with SCPI, UART, USB, RS485 and ETHERNET in 3U eurocard format
Status : WIP
- First revision of schematic and PCB is done.
- Creating a complementary board with a DIN 41612 connector and other interface connectors to order a complete assembly and begin work on software and interface testing.
Features:
- 2 layer board
- ARM Cortex-M33 Processor in LQFP48 (STM32G431CBT6)
- 0 - 999kΩ ressistor-relay matrix driven by 6x STPIC6C595
- USB 2.0
- 10/100 Ethernet (based on WIZnet W5500)
- UART
- Half-duplex RS485
- 3U eurocard IEEE 1101.1-1998 format (160x100 mm)
License and Contribution
Open to contributions in both software and hardware!
Parts
388| Qty | Value | Footprint | References |
|---|---|---|---|
| 46 | 120 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R102, R103, R104, R105, R106, R107, R108, R109, R111, R112, R113, R114, R115, R116, R118, R119 +30 |
| 45 | ~ | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D13, D109, D110, D111, D112, D113, D114, D115, D116, D123, D124, D125, D126, D127, D128 +29 |
| 39 | 1N4148 | Diode_SMD:D_MiniMELF | D101, D102, D103, D104, D105, D106, D107, D108, D117, D118, D119, D120, D121, D122, D129, D130 +23 |
| 39 | TQ2-5V | SamacSys_Parts:TX2L25V | K1, K2, K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K20, K21, K22, K23 +23 |
| 31 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C11, C12, C13, C14, C15, C16, C17, C27, C101, C102, C103, C104, C105, C106 +15 |
| 22 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22 +6 |
| 12 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R21, R84, R85, R90, R91, R101, R110, R117, R124, R131, R138 |
| 12 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C18, C26, C30, C31, C35, C36, C40, C43, C44, C47, C48, C51 |
| 9 | 200 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R40, R41, R42, R43, R44, R45, R46, R47, R48 |
| 9 | 200k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R67, R68, R69, R70, R71, R72, R73, R74, R75 |
| 9 | 20R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R31, R32, R33, R34, R35, R36, R37, R38, R39 |
| 9 | 20k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R58, R59, R60, R61, R62, R63, R64, R65, R66 |
| 9 | 2R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R22, R23, R24, R25, R26, R27, R28, R29, R30 |
| 9 | 2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R49, R50, R51, R52, R53, R54, R55, R56, R57 |
| 8 | 10n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C7, C10, C21, C22, C23, C24, C25 |
| 6 | STPIC6C595TTR | SamacSys_Parts:SOP65P640X120-16N | IC101, IC102, IC103, IC104, IC105, IC106 |
| 5 | ESD5Z3.3T1G | Diode_SMD:D_SOD-523 | D3, D5, D10, D16, D17 |
| 4 | 18p | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6, C8, C19, C20 |
| 4 | 2 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R93, R94, R95, R96 |
| 4 | 33R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14, R15, R16, R17 |
| 4 | 7772 | SamacSys_Parts:7772 | J4, J5, J6, J7 |
| 3 | 10R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R88, R89 |
| 3 | 4x10k | Resistor_SMD:R_Array_Convex_4x0603 | RN1, RN2, RN3 |
| 3 | LQH32PN101MN0L | Inductor_SMD:L_1210_3225Metric | L2, L3, L4 |
| 3 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U3, U4, U5 |
| 2 | 150R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12, R13 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R18, R20 |
| 2 | 1nF/2kV | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C5 |
| 2 | 22R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2 |
| 2 | 3225-25M-SR | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1, Y2 |
| 2 | 49R9 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11 |
| 2 | 75R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7 |
| 2 | 82R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8, R9 |
| 2 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5 | H1, H2 |
| 2 | Polyfuse | Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1, F2 |
| 2 | SMF5.0CA | Diode_SMD:D_SMF | D7, D12 |
| 1 | 0R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R80 |
| 1 | 1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R92 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R83 |
| 1 | 12,4k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
| 1 | 15k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 4,7u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9 |
| 1 | B82464P4105M000 | Inductor_SMD:L_10.4x10.4_H4.8 | L1 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | CDSOT23-SM712 | SamacSys_Parts:SOT95P230X117-3N | D15 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J3 |
| 1 | DIN41612_02x32_AC | Connector_DIN:DIN41612_C_2x32_Male_Horizontal_THT | J1 |
| 1 | D_TVS | Diode_SMD:D_MiniMELF | D11 |
| 1 | FM24C64B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | H1102NL | SamacSys_Parts:SOIC127P940X597-16N | T1 |
| 1 | SN65HVD75DR | SamacSys_Parts:SOIC127P600X175-8N | IC1 |
| 1 | STM32G431CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | SolderJumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged12_Pad1.0x1.5mm | JP1 |
| 1 | TC2030 | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J2 |
| 1 | W5500 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
Questions
How big is the RDE board PCB?
It measures 160 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RDE board use?
388 parts, built around the USBLC6-2SC6, FM24C64B-G, SN65HVD75DR and W5500. 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 RDE board KiCad files?
From the bartkepl/RDE_board repository on GitHub, at the commit this page was made from: the board is pcb/RDE_board.kicad_pcb and its schematic pcb/ConnDIN41612.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RDE board design in my own project?
Its repository publishes it under the MIT 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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