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4 layers99.5 × 65.1 mmRadar2, the printed circuit board in 3D

through-wall radar KiCad design files and C++ firmware

Size
99.5 × 65.1 mm
Copper layers
4
Thickness
1.81 mm
Parts
135
Nets
178
Pads
565
Tracks, vias
1,113, 212
Pours
24
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
26 May 2026
Updated
30 Aug 2026

Overview

Radar2 is an open-source printed circuit board by chadayas, from the chadayas/radar repository on GitHub. It is a 4-layer board of 99.5 × 65.1 mm with 135 parts on 178 nets, routed with 1,113 tracks and 212 vias.

It is built around the DW3220TR13, TPS54540DDA and LP5907QMFX-3.0Q1, with the BQ25713RSNR, CSD17308Q3 and CSD25404Q3 among its other parts. Its parts include 78 capacitors, 32 resistors, 7 connectors, 6 ICs and 5 transistors. It belongs with the STM32 boards of this library.

Main components

7

README

README.md

In Progress

repo will stay little messy till hardware design is finished. radar2 PCB

radar2 PCB layout

Parts

135
QtyValueFootprintReferences
300.1uFCapacitor_SMD:C_0402_1005MetricC13, C14, C15, C16, C17, C24, C25, C26, C27, C28, C31, C46, C49, C52, C58, C59 +14
610kResistor_SMD:R_0603_1608MetricR32, R33, R34, R35, R36, R38
50.1uFCapacitor_SMD:C_0603_1608MetricC6, C36, C73, C75, C76
51uFCapacitor_SMD:C_0603_1608MetricC11, C41, C42, C43, C44
44.7uFCapacitor_SMD:C_0603_1608MetricC32, C33, C34, C35
4CSD17308Q3csd17:CSD17308Q3Q1, Q2, Q3, Q4
310Resistor_SMD:R_0402_1005MetricR6, R17, R18
310uFCapacitor_SMD:C_0402_1005MetricC12, C51, C57
34.7nFCapacitor_SMD:C_0402_1005MetricC50, C53, C56
2100pFCapacitor_SMD:C_0402_1005MetricC1, C10
2100uFCapacitor_SMD:C_0805_2012MetricC37, C38
21uFCapacitor_SMD:C_0402_1005MetricC8, C30
22.0pFCapacitor_SMD:C_0402_1005MetricC47, C48
2220kResistor_SMD:R_0402_1005MetricR10, R11
23.3pFCapacitor_SMD:C_0402_1005MetricC54, C55
233nFCapacitor_SMD:C_0603_1608MetricC19, C20
233pFCapacitor_SMD:C_0402_1005MetricC3, C4
24.7uFCapacitor_SMD:C_0402_1005MetricC70, C72
24.99Resistor_SMD:R_0603_1608MetricR13, R14
247nFCapacitor_SMD:C_0402_1005MetricC22, C23
25kResistor_SMD:R_0603_1608MetricR7, R8
2LP5907QMFX-3.0Q1lp59:SOT95P280X145-5NIC3, IC5
2SMA_CONNECTORsma_conn1:SMACONNECTORJ6, J7
10.22uFCapacitor_SMD:C_0402_1005MetricC45
109.03290.0109111:090329001SW1
11Resistor_SMD:R_0603_1608MetricR15
110.2kResistor_SMD:R_0603_1608MetricR24
1100kResistor_SMD:R_0603_1608MetricR31
110kResistor_SMD:R_0402_1005MetricR2
110mResistor_SMD:R_0402_1005MetricR16
110mResistor_SMD:R_0603_1608MetricR37
110nFCapacitor_SMD:C_0603_1608MetricC21
110uFCapacitor_SMD:C_0603_1608MetricC29
116.9kResistor_SMD:R_0603_1608MetricR22
11800pFCapacitor_SMD:C_0402_1005MetricC5
12.2Resistor_SMD:R_0603_1608MetricR12
12.2uHinduct:INDPM9785X300NL1
122uFCapacitor_SMD:C_0603_1608MetricC7
1243kResistor_SMD:R_0603_1608MetricR19
1250kResistor_SMD:R_0402_1005MetricR4
13.3uFCapacitor_SMD:C_0402_1005MetricC9
130kResistor_SMD:R_0402_1005MetricR1
131.6kResistor_SMD:R_0603_1608MetricR23
133Capacitor_SMD:C_0402_1005MetricFB1
1350kResistor_SMD:R_0402_1005MetricR5
1365kResistor_SMD:R_0603_1608MetricR20
1383kResistor_SMD:R_0402_1005MetricR9
140.2kResistor_SMD:R_0402_1005MetricR3
14700pfCapacitor_SMD:C_0603_1608MetricC39
1470nFCapacitor_SMD:C_0402_1005MetricC18
147pfCapacitor_SMD:C_0603_1608MetricC40
15.5uH55induct:CDRH62BNP5R5NCBL2
1680pFCapacitor_SMD:C_0402_1005MetricC2
188.7kResistor_SMD:R_0603_1608MetricR21
1BQ25713RSNRbq2517:QFN40P400X400X80-33N-DIC1
1CSD25404Q3csd25:DQG_VSON-CLIPQ5
1DW3220TR13dw3220:DW3220TR13-1IC6
1ECS-384-CDX-2482Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mmY1
1GSB1C4621DS1HRgsb_usb:GSBJ1
1JST-XHConnector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_VerticalJ4
1M20-8770546 (for SWD)Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_VerticalJ2
1M20-9730446_DISPLAY_POWERConnector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ3
1M20-9990646_PIConnector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJ5
1PDS760-13sbr8u:POWERDI5D1
1STM32H725ZETxPackage_QFP:LQFP-144_20x20mm_P0.5mmU1
1SWT0220-016016GSA button:SWT0220016016GSASW2
1TPS54540DDAtps54:SOIC127P600X170-9NIC2

Questions

How big is the Radar2 PCB?

It measures 99.5 × 65.1 mm and has 4 copper layers, 1.81 mm thick.

What parts does the Radar2 use?

135 parts, built around the DW3220TR13, TPS54540DDA, LP5907QMFX-3.0Q1 and BQ25713RSNR. 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 Radar2 KiCad files?

From the chadayas/radar repository on GitHub, at the commit this page was made from: the board is kicad_files/radar2.kicad_pcb and its schematic kicad_files/conns.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Radar2 design in my own project?

Its repository states no licence, so its author keeps all rights: ask chadayas before reusing the design.

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