4 layers30 × 64 mm
4 layers40 × 100 mm
Backplane
melair/ktane5Keep Talking and Nobody Explodes - Physical Edition
- Size
- 40 × 100 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 83
- Nets
- 74
- Pads
- 310
- Tracks, vias
- 565, 186
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Apr 2021
- Updated
- 21 Oct 2026
Overview
Backplane is an open-source printed circuit board by melair, from the melair/ktane repository on GitHub. It is a 4-layer board of 40 × 100 mm with 83 parts on 74 nets, routed with 565 tracks and 186 vias.
It is built around the THVD1420D, TPS629210DRL and CM1293A-04SO(ES). Its parts include 31 resistors, 18 capacitors, 10 ICs, 8 diodes and 7 connectors. It belongs with the STM32 boards of this library.
Main components
3
THVD1420D
SOIC-8-40℃~+125℃ 1 1 1.5mA 12Mbps 256 3V~5.5V Half-Duplex Transceiver ±12kV SOIC-8 RS-485 / RS-422 ICs ROHSTexas InstrumentsRS-485 / RS-422 ICs
TPS629210DRL
SOT-5x3(DRL)-8-40℃~+150℃ 1A 2.5MHz 3V~17V 400mV~5.5V 4uA Adjustable Buck Buck Built-in SOT-5x3(DRL)-8 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
CM1293A-04SO(ES)
SOT-23-6SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSElecSuperUncategorised
README
README.mdKeep Talking and Nobody Explodes - Physical Version
Version Two
This is version two of my Keep Talking and Nobody Explodes physical bomb, you may refer to the version-one branch if you wish to see the first version progress.
Parts
83| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R5, R6, R7, R8, R16, R17, R24, R25 |
| 8 | 0.1μF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C6, C7, C8, C9, C13, C14 |
| 4 | 1000 | Resistor_SMD:R_0603_1608Metric | R11, R15, R23, R31 |
| 4 | 120 | Resistor_SMD:R_0603_1608Metric | R3, R20, R28, R30 |
| 4 | 430 | Resistor_SMD:R_0603_1608Metric | R1, R4, R19, R27 |
| 4 | MountingHole | KTANE:MountingHole_3.2mm_M3_NoCopper | H1, H2, H3, H4 |
| 3 | 309k | Resistor_SMD:R_0603_1608Metric | R10, R18, R26 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C10, C15 |
| 2 | 1μF | Capacitor_SMD:C_0603_1608Metric | C12, C17 |
| 2 | 2.2nF | Capacitor_SMD:C_0603_1608Metric | C11, C16 |
| 2 | 22uF | Capacitor_SMD:C_1206_3216Metric | C4, C5 |
| 2 | 274k | Resistor_SMD:R_0603_1608Metric | R14, R22 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 2 | 47k | Resistor_SMD:R_0603_1608Metric | R21, R29 |
| 2 | AD5175 | Package_SO:MSOP-10_3x3mm_P0.5mm | U6, U8 |
| 2 | CM1293A‐04SO | Package_TO_SOT_SMD:SC-74-6_1.55x2.9mm_P0.95mm | U9, U10 |
| 2 | EN | LED_SMD:LED_0603_1608Metric | D4, D5 |
| 2 | Q_NMOS_GSD | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | T24CAN | Package_TO_SOT_SMD:SOT-23 | D6, D7 |
| 2 | TPS259630 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U5, U7 |
| 1 | 2.2uH | Inductor_SMD:L_1008_2520Metric | L1 |
| 1 | 27.4k | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 3.3V Fault | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | 3.3V OK | LED_SMD:LED_0603_1608Metric | D8 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C25 |
| 1 | 4.7uF | Capacitor_SMD:C_1206_3216Metric | C3 |
| 1 | Boot | KTANE:PTS526Sx15SMTR2xLFS | SW1 |
| 1 | Bus In | KTANE:PinHeader_2x05_P2.54mm_VerticalAndHorizontal_Centered | J4 |
| 1 | Bus Out | KTANE:PinHeader_2x05_P2.54mm_VerticalAndHorizontal_Centered | J5 |
| 1 | Front | KTANE:PinHeader_2x08_P2.54mm_VerticalAndHorizontal_Centered | J2 |
| 1 | LM4040DBZ-3 | Package_TO_SOT_SMD:SOT-23 | U1 |
| 1 | LOGO | KTANE:KTANEIRL-0505 | G*** |
| 1 | Power In | Connector_AMASS:AMASS_XT30PW-M_1x02_P2.50mm_Horizontal | J6 |
| 1 | Power Out | Connector_AMASS:AMASS_XT30PW-F_1x02_P2.50mm_Horizontal | J7 |
| 1 | Rear | KTANE:PinHeader_2x08_P2.54mm_VerticalAndHorizontal_Centered | J3 |
| 1 | STM32G070KBTx | Package_QFP:LQFP-32_7x7mm_P0.8mm | U11 |
| 1 | SWD | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J1 |
| 1 | Status | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | THVD1420D | Package_TO_SOT_SMD:SOT-583-8 | U2 |
| 1 | TPS629210 | Package_TO_SOT_SMD:SOT-583-8 | U4 |
| 1 | VBUS OK | LED_SMD:LED_0603_1608Metric | D2 |
Questions
How big is the Backplane PCB?
It measures 40 × 100 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Backplane use?
83 parts, built around the THVD1420D, TPS629210DRL and CM1293A-04SO(ES). 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 Backplane KiCad files?
From the melair/ktane repository on GitHub, at the commit this page was made from: the board is PCB/Backplane/Backplane.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Backplane design in my own project?
Its repository states no licence, so its author keeps all rights: ask melair before reusing the design.
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