4 layers152.8 × 53.5 mm
4 layers50.5 × 50 mm
CommBMS
robotique-udes/PCB- Size
- 50.5 × 50 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 38
- Nets
- 67
- Pads
- 215
- Tracks, vias
- 393, 40
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 Mar 2024
- Updated
- 3 Nov 2026
Overview
CommBMS is an open-source printed circuit board by robotique-udes, from the robotique-udes/PCB repository on GitHub, published under the MIT licence. It is a 4-layer board of 50.5 × 50 mm with 38 parts on 67 nets, routed with 393 tracks and 40 vias.
It is built around the AXP1T34GWH, ESP32-S3-WROOM-1-N8 and SN65HVD232QD, with the SP3485EN-Y, TS09-63-25-WT-160-SMT-TR and CVJ10F30,LF among its other parts. Its parts include 12 capacitors, 7 resistors, 6 ICs, 4 connectors and 3 diodes. It belongs with the ESP32 boards of this library.
Main components
6AXP1T34GWH
TSSOP-5TSSOP-5 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
SN65HVD232QD
SOIC-8-40℃~+125℃ 10mA 1Mbps 3V~3.6V CAN Transceiver SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
SP3485EN-Y
SOP-8SOP-8 RS-485 / RS-422 ICs ROHSYLPTECRS-485 / RS-422 ICs
TS09-63-25-WT-160-SMT-TR
--30℃~+80℃ 1.6N 12V 40,000 Cycles 50mA Gull Wing Rectangular Button SPST Surface Mount,Vertical - Tactile Switches ROHSCUITactile SwitchesCVJ10F30,LF
SMD-5P1A 2 Independent 30V 50uA@30V 570mV@1A SMD-5P Schottky Diodes ROHSToshibaSchottky Diodes
README
rover/2024/pdb/README.mdPDB (Power Distribution Board)
PCB servant à gérer la distribution à bas courant et le de data du rover
Image du PCB en 3D
Objectifs:
- Protéger tous les autres boards du Over/Under Voltage pour le 5V, 12V et 24V
- Seulement le 5v et le 24v sont protégé, car les résistance 5% ont trop d'incertitude.
- Injecteur POE(12V custom pinout) pour les cameras branché en Ethernet
- On/Off possible par le MCU
- Diriger le signal des cameras sur les bonnes pins selon la norme Ethernet
- Agir en tant que POE pour les antennes 24V (vrai POE)
- Controller l'alimentation de 2 circuit d'accessoires 12V
- Par 2 connecteurs Ethernet
- Permettre de pouvoir sortir une des 3 tension (5v, 12v, 24v) par un screw terminal
- Alimente la switch ethernet en dessous
- MCU Connecté sur le CAN BUS
- Sélectionner avec les GPIO les cameras qui doivent recevoir du power
Composants principaux:
- ESP32 DEV KIT V1
- TJA1050 (CAN BUS)
- LTC4365 (Over/Under Voltage protaction)
- DMG4822SSD (DIODE pour la switch du LTC4365)
- DELs
- CLP6C-FKB-CKNPRGJBB7A363 (ERROR DEL)
- Boutons
- Horizontal Amphenol 54602 RJ45
- ASSMANN_A-2014 Ethernet connector
- CRJ036-5-TH_2x4 Ethernet connector
- BTS5200 (4 Channel Mosfet)
Fonctionnement:
- Le PDB reçoit 3 tensions régulé en entrée, du 5V, du 12V et du 24V.
- Le 12V sert principalement pour alimenter les caméras qui sont alimentés avec un POE avec un Pinout spécial. Il sert aussi à alimenter 2 circuit d'accessoires potentiels.
- Le 24V sert à alimenter le/les antennes qui sont sur le Rover.
- Le 5V est passé avec les fils de CanBus pour alimenter et communiquer avec les autres PCB du rover
- Le circuit sécurise les trois tensions contre les sur-tensions et le drops de tensions.
- La sortie vers l'ordinateur principal n'est pas utilisé, l'ordinateur est directement branché dans la switch.
PGIO
Outputs
| Name | GPIO |
|---|---|
| CAM_SIGN_0 | D18 |
| CAM_SIGN_1 | D19 |
| CAM_SIGN_2 | D33 |
| CAM_SIGN_3 | D32 |
| PWM_0 | D21 |
| PWM_1 | D22 |
| ACC1_CONTROL | D23 |
| ACC2_CONTROL | D25 |
| LED_R | D14 |
| LED_G | D27 |
| LED_B | D26 |
Communication
| Name | GPIO |
|---|---|
| TXC | D6 |
| RXC | D7 |
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C4, C6, C10 |
| 5 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C5, C7, C8, C9 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopBottom | H1, H2, H3 |
| 2 | 0 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R6 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | 5k1 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4 |
| 2 | Eth-Horiz-54601-908WPLF | RoverFootprint:Ethernet_Horizontal | J1, J2 |
| 2 | TS09-63-25-WT-160-SMT-TR | RoverFootprint:SW-PTS815 SJM250SMTRLFS | SW1, SW2 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | 1n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11 |
| 1 | AXP1T34 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U7 |
| 1 | CONN-MOLEX_8PIN-39301080 | RoverFootprint:CONN-MOLEX_8PIN-39301080 | J4 |
| 1 | CVJ10F30 | RoverFootprint:Diode_schottky-CVJ10F30 | D3 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1U | U5 |
| 1 | G | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | LDO-LM7805MPX/NOPB | Package_TO_SOT_SMD:TO-263-3_TabPin2 | U3 |
| 1 | LOGO | LOGO | G*** |
| 1 | R | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | SN65HVD232Q | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | SP3485EN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | TVS | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | USB_C_USB4105-GF-A | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J3 |
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Questions
How big is the CommBMS PCB?
It measures 50.5 × 50 mm and has 4 copper layers, 1.61 mm thick.
What parts does the CommBMS use?
38 parts, built around the AXP1T34GWH, ESP32-S3-WROOM-1-N8, SN65HVD232QD and SP3485EN-Y. 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 CommBMS KiCad files?
From the robotique-udes/PCB repository on GitHub, at the commit this page was made from: the board is rover/2025/CommBMS/latest/CommBMS.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the CommBMS design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).