4 layers30 × 64 mm
4 layers50 × 50 mm
Comms
melair/ktane5Keep Talking and Nobody Explodes - Physical Edition
- Size
- 50 × 50 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 61
- Nets
- 58
- Pads
- 220
- Tracks, vias
- 315, 106
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Apr 2021
- Updated
- 21 Oct 2026
Overview
Comms is an open-source printed circuit board by melair, from the melair/ktane repository on GitHub. It is a 4-layer board of 50 × 50 mm with 61 parts on 58 nets, routed with 315 tracks and 106 vias.
It is built around the MLPF-NRG-01D3, THVD1420D and 2450AT18A0100001E, with the BAT54S among its other parts. Its parts include 17 capacitors, 13 connectors, 12 resistors, 3 ICs and 3 diodes. It belongs with the STM32 boards of this library.
Main components
4
MLPF-NRG-01D3
WFBGA-6-40℃~+105℃ 1.1dB 50Ω Low Pass WFBGA-6 RF Filters ROHSSTMicroelectronicsRF Filters
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
2450AT18A0100001E
12060.5dBi 1.3mm 1.6mm 100MHz 2.4GHz 2W 3.2mm 50Ω Patch Antenna 1206 Antennas ROHSJohanson DielectricsAntennas
BAT54S
SOT-231 Pair Series Connection 1V@100mA 200mA 2uA@25V 30V 600mA SOT-23 Schottky Diodes ROHSMDDSchottky Diodes
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
61| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 0.1μF | Capacitor_SMD:C_0603_1608Metric | C2, C9, C23, C24, C26, C28, C30, C31 |
| 4 | MountingHole | KTANE:MountingHole_3.2mm_M3_NoCopper | H1, H2, H3, H4 |
| 4 | Shield | KTANE:EMI_Shield_Corner | J6, J7, J8, J9 |
| 3 | 0 | KTANE:R_0402_1005Metric_Tweaked | R4, R5, R6 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R9, R10, R12 |
| 3 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C25, C29, C32 |
| 2 | 120 | Resistor_SMD:R_0603_1608Metric | R2, R8 |
| 2 | 430 | Resistor_SMD:R_0603_1608Metric | R1, R3 |
| 2 | 8pF | Capacitor_SMD:C_0603_1608Metric | C36, C41 |
| 2 | Bus | KTANE:PinHeader_2x03_P2.54mm_Vertical-Centered | J3, J4 |
| 2 | Shield | KTANE:EMI_Shield_Straight | J12, J13 |
| 2 | ~ | KTANE:R_0402_1005Metric_Tweaked | C7, C8 |
| 1 | 1000 | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 100pF | Capacitor_SMD:C_0603_1608Metric | C27 |
| 1 | 10uH | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 1PPS | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | J10 |
| 1 | 20pF | KTANE:R_0402_1005Metric_Tweaked | C6 |
| 1 | 22nH | Inductor_SMD:L_0402_1005Metric | L2 |
| 1 | 2450AT18A0100001E | RF_Antenna:Johanson_2450AT18x100_2400-2500Mhz | AE1 |
| 1 | 32.768k | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | Y2 |
| 1 | 32MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 51 | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | ANT | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | J2 |
| 1 | BAT54S | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | Boot | KTANE:PTS526Sx15SMTR2xLFS | SW1 |
| 1 | In | KTANE:PinHeader_2x08_P2.54mm_Vertical-Centered | J1 |
| 1 | LOGO | KTANE:KTANEIRL-0505 | G*** |
| 1 | MLPF-NRG-01D3 | KTANE:MLPF-NRG-01D3 | U3 |
| 1 | MR2032 | KTANE:CellHolder | BT1 |
| 1 | Q_PMOS_GSD | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | STM32WB09KEVx | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.7x3.7mm | U1 |
| 1 | SWD | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J5 |
| 1 | Status | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | T24CAN | Package_TO_SOT_SMD:SOT-23 | D6 |
| 1 | THVD1420D | Package_TO_SOT_SMD:SOT-583-8 | U2 |
| 1 | UART | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J14 |
Questions
How big is the Comms PCB?
It measures 50 × 50 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Comms use?
61 parts, built around the MLPF-NRG-01D3, THVD1420D, 2450AT18A0100001E and BAT54S. 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 Comms KiCad files?
From the melair/ktane repository on GitHub, at the commit this page was made from: the board is PCB/Modules/Comms/Comms.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Comms 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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