6 layers160 × 101.4 mm
2 layers138.2 × 121.1 mm
Inertia
Moddingear/InertiaRobot hub controller (CAN+Wifi UDP+Odometry)
- Size
- 138.2 × 121.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 45
- Pads
- 174
- Tracks, vias
- 348, 114
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Sep 2026
- Updated
- 23 Oct 2026
Overview
Inertia is an open-source printed circuit board by Moddingear, from the Moddingear/Inertia repository on GitHub. It is a 2-layer board of 138.2 × 121.1 mm with 37 parts on 45 nets, routed with 348 tracks and 114 vias.
It is built around the ESP32-C5-WROOM-1, TJA1042T/3/1J and TS-1088-AR02016, with the WS2812B and ESD5Z3.3T1G among its other parts. Its parts include 5 connectors, 4 ICs, 3 resistors, 3 diodes and 2 capacitors. It belongs with the radio and wireless boards and the ESP32 and RISC-V boards of this library.
Main components
5
ESP32-C5-WROOM-1
SMD,27.5x18mmSMD,27.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TJA1042T/3/1J
SOIC-8-40℃~+150℃ 15uA 4.5V~5.5V 5Mbps 70mA SOIC-8 CAN Transceivers ROHSNXP SemiconductorsCAN Transceivers
TS-1088-AR02016
SMD,4x3mm-30℃~+80℃ 1.6N 100,000 cycles 12V 2mm 3.9mm 3mm 50mA Black Round Button SMD(SMT) Tab SPST Surface Mount,Vertical Without Bracket SMD,4x3mm Tactile Switches ROHSXUNPUTactile Switches
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
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)
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | MountingHole_Pad | holes:SMTSOM340 | H4, H5, H6, H7, H8, H9 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad | H1, H2, H3 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP6, TP7, TP8 |
| 2 | 4k7 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4 |
| 2 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JBUCK1, JBUCK2 |
| 2 | S2B-ZR-SM | jst:S2B-ZR-SMxA | JCAN1, JCAN2 |
| 2 | TS-1088-AR02016 | Button_Switch_SMD:SW_SPST_TS-1088-xR020 | SW1, SW2 |
| 2 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2 |
| 1 | 100nF 6.3V | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 10uF 6.3V | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 7010A | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J2 |
| 1 | Conn_01x02 | Connector_AMASS:AMASS_XT60-F_1x02_P7.20mm_Vertical | J3 |
| 1 | Conn_01x02 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J11 |
| 1 | Conn_01x04 | Connector_JST:JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J4 |
| 1 | ESD5Z3.3T1G | Diode_SMD:D_SOD-523 | D7 |
| 1 | ESP32-C5-WROOM-1 | PCM_Espressif:ESP32-C5-WROOM-1 | U1 |
| 1 | LSM6DSOTR | LSM6DSO:LGA-14L_2P5X3X0P86_STM | U3 |
| 1 | OTOS Robotronik | otos:OTOS_robotronik | U4 |
| 1 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | TJA1042T-3 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | TestPoint | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP1 |
| 1 | tf01A | TF01A:TF-01A | J5 |
Questions
How big is the Inertia PCB?
It measures 138.2 × 121.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Inertia use?
37 parts, built around the ESP32-C5-WROOM-1, TJA1042T/3/1J, TS-1088-AR02016 and WS2812B. 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 Inertia KiCad files?
From the Moddingear/Inertia repository on GitHub, at the commit this page was made from: the board is kicad/inertia.kicad_pcb and its schematic kicad/esc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Inertia design in my own project?
Its repository states no licence, so its author keeps all rights: ask Moddingear before reusing the design.
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