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4 layers80 × 80.1 mmChassis, the printed circuit board in 3D

This project contains the chassis board, which routes power and CAN to the wheels from the PMM and the Dev Board, respectively. Also, a buck converter that drives the 19V power needed for the CV board.

Size
80 × 80.1 mm
Copper layers
4
Thickness
1.6 mm
Parts
58
Nets
40
Pads
159
Tracks, vias
221, 47
Pours
21
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
21 Mar 2025
Updated
1 Sep 2026

Overview

Chassis is an open-source printed circuit board by ut-ras, from the ut-ras/rm_electrical-chassis repository on GitHub. It is a 4-layer board of 80 × 80.1 mm with 58 parts on 40 nets, routed with 221 tracks and 47 vias.

It is built around the RT6285GSP, 150060YS75000 and 150060BS75000, with the 150060RS75000 and SR54F-AU_R2_000A1 among its other parts. Its parts include 24 connectors, 7 resistors, 7 diodes, 6 capacitors and 1 IC.

Main components

5

README

README.md

Chassis board

A 3D rendering of the chassis board

This project contains the chassis board, which routes power and CAN to the wheels from the PMM and the Dev Board, respectively.
Also, a buck converter that drives the 19V power needed for the CV board. This is sent up the slip ring.

NOTE: 3D models will not work until someone figures out a clean way to use relative URLs for 3D models

Parts

58
QtyValueFootprintReferences
51kΩResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR1, R2, R8, R10, R12
4MountingHoleMountingHole:MountingHole_3.2mm_M3H1, H2, H3, H4
4TestPointTestPoint:TestPoint_Pad_2.0x2.0mmTP1, TP2, TP3, TP4
3150060YS75000LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolderD7, D9, D11
3Conn_01x04Connector_JST:JST_GH_BM04B-GHS-TBT_1x04-1MP_P1.25mm_VerticalJ11, J23, J25
222µFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC5, C6
24.7µFCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC7, C8
2SUPCAP_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ12, J29
10.01uCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC1
1100kΩResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR3
110µHRobomaster_Passives:MPLAL6060100L1
1150060BS75000LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolderD1
1150060RS75000LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolderD2
12.5AFuse:Fuse_0603_1608Metric_Pad1.05x0.95mm_HandSolderF1
1501645-1620Robomaster_Connectors:5016451620J17
16.8kΩResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR4
182pFCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC3
1BL_JSTConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ4
1BL_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ8
1BR_JSTConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ2
1BR_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ6
1CAN2_INConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ27
1Conn_01x08Robomaster_Connectors:172298-YY08J31
1FL_JSTConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ3
1FL_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ7
1FR_JSTConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ1
1FR_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ5
1GIM1_JSTConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ13
1GIM1_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ15
1GIM2_JSTConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ14
1GIM2_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ16
1GIM_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ20
1IN_JSTConnector_JST:JST_GH_BM02B-GHS-TBT_1x02-1MP_P1.25mm_VerticalJ9
1IN_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ10
1LOGORobomaster_Memes:bloxG***
1LOGORobomaster_Memes:pikjaG***
1LOGORobomaster_Special:StampedeLogoG***
1PTVS26VS1UR-QXRobomaster_Passives:PTVS26VS1URQXD10
1RT6285GSPRobomaster_ICs:SOIC127P600X175-9NIC2
1SHOO_XT30Robomaster_Connectors:AMASS_XT30U-F_1x02_P5.0mm_VerticalJ19
1SR54F-AU_R2_000A1Robomaster_Passives:SODFL5336X110ND4

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Questions

How big is the Chassis PCB?

It measures 80 × 80.1 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Chassis use?

58 parts, built around the RT6285GSP, 150060YS75000, 150060BS75000 and 150060RS75000. 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 Chassis KiCad files?

From the ut-ras/rm_electrical-chassis repository on GitHub, at the commit this page was made from: the board is Chassis.kicad_pcb and its schematic Chassis.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Chassis design in my own project?

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