Openmotorbridge front node

schmidtmt·openmotorbridge·hardware/kicad_front_node/openmotorbridge_front_node.kicad_pcb

Openmotorbridge front node PCB layout, top view — open source ESP32 board by schmidtmt

About the Openmotorbridge front node PCB

Openmotorbridge front node is an open source ESP32 PCB design by schmidtmt, published on GitHub. It is a 2-layer board measuring 82 × 50 mm, with 49 components from 49 distinct parts.

Its main chip is the ESP32-S3-WROOM-1U, from the ESP32 family. Other key parts include the USB2514BI-AEZG, TPS54302_5V_BUCK, TPS2051B_PORT2_GATE, SW3526_USB_PD1_20W and TCAN334G_CAN. By type, the board carries 14 connectors, 8 ICs, 7 capacitors, 5 resistors, 4 diodes and 3 inductors.

It belongs with the rf & radio, iot & wireless and sensors designs in this gallery.

From the project

Dieses Verzeichnis enthält die vollständigen KiCad 10 Schaltplan-, PCB- und Produktionsdateien für die drahtlose All-UWB & Pure-DC Architektur von OpenMotorBridge.

Dieses Verzeichnis enthält die vollständigen KiCad 10 Schaltplan-, PCB- und Produktionsdateien für die drahtlose All-UWB & Pure-DC Architektur von OpenMotorBridge.

Durch den konsequenten Einsatz von Ultra-Wideband (Qorvo DW3110 6.5 GHz Ch. 5, $< 0{,}4\,\text{ms}$) und Bluetooth entfällt jegliche Signal- und NF-Audioverdrahtung über den Rahmen. Der Kabelbaum besteht ausschließlich aus robusten 2-Draht-DC-Power-Peitschen (+5V/GND bzw. +12V/GND).

Main components on the Openmotorbridge front node

ESP32-S3-WROOM-1U USB2514BI-AEZG TPS54302_5V_BUCK TPS2051B_PORT2_GATE SW3526_USB_PD1_20W TCAN334G_CAN TLV75533P_3V3_LDO SW3526_USB_PD3_20W

Openmotorbridge front node bill of materials (BOM)

49 components, 49 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	ESP32-S3-WROOM-1U	ESP32-S3-WROOM-1U	U1
1	USB2514BI-AEZG USB2514Bi-AEZG	QFN-36-1EP_6x6mm_P0.5mm_EP4.1x4.1mm	U2
1	TPS54302_5V_BUCK	SOT-23-6	U3
1	TPS2051B_PORT2_GATE	SOT-23-5	U4
1	SW3526_USB_PD1_20W	QFN-28-1EP_4x4mm_P0.4mm_EP2.4x2.4mm_ThermalVias	U5
1	TCAN334G_CAN	SOIC-8_3.9x4.9mm_P1.27mm	U6
1	TLV75533P_3V3_LDO	SOT-23-5	U7
1	SW3526_USB_PD3_20W	QFN-28-1EP_4x4mm_P0.4mm_EP2.4x2.4mm_ThermalVias	U8
1	DMN63D8_BSD_MOSFET	SOT-363_SC-70-6	Q1
1	TPS1H100_AUX_LIGHT	Texas_HTSSOP-14-1EP_4.4x5mm_P0.65mm_EP3.4x5mm_Mask3.155x3.255mm_ThermalVias	Q2
1	24.000MHZ 24.000MHz	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	12V_KL15_GND	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J1
1	CAN_H_L_GND	JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical	J2
1	HANDLEBAR_MULTI_BTN	JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical	J3
1	USB_UPSTREAM_HOST	JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical	J4
1	USB_DN1_PHONE_PD20W	JST_PH_B5B-PH-K_1x05_P2.00mm_Vertical	J5
1	USB_DN3_GLOVEBOX_PD20W	JST_PH_B5B-PH-K_1x05_P2.00mm_Vertical	J5_MP3
1	USB_DN2_CP2AA_PIGTAIL	JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical	J6
1	USB_DN4_COCKPIT_AUX	JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical	J6_AUX
1	USB-C_SERVICE	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J7

Show 29 more

Qty	Part	Footprint	Refs
1	ACTION_CAM_5V_PWR	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J8
1	MIRROR_BSD_LEDS	JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical	J9
1	12V_QI_POWER	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J10
1	12V_AUX_LIGHT	JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical	J11
1	QWIIC_I2C	JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical	J12
1	CPC1017N_CAN_RELAY	SOP-4_4.4x2.6mm_P1.27mm	K1
1	MSM261S4030H0R	InvenSense_ICS-43434-6_3.5x2.65mm	MIC1
1	BOOT	SW_Push_SPST_NO_Alps_SKRK	SW1
1	RESET	SW_Push_SPST_NO_Alps_SKRK	SW2
1	WS2812B-2020_RGB	LED_WS2812B-2020_PLCC4_2.0x2.0mm	LED1
1	SMCJ36CA_TVS	D_SMB	D4
1	SS34_REV_POL	D_SMA	D5
1	SS34_USB_OR	D_SMA	D7
1	SS34_BUCK_OR	D_SMA	D8
1	4.7UH_POWER_CHOKE 4.7uH_Power_Choke	L_Sunlord_MWSA1206S-470	L1
1	4.7UH_PD1_CHOKE 4.7uH_PD1_Choke	L_Sunlord_MWSA0503S	L2
1	4.7UH_PD3_CHOKE 4.7uH_PD3_Choke	L_Sunlord_MWSA0503S	L3
1	10UF_50V 10uF_50V	C_0805_2012Metric	C19
1	22UF_16V 22uF_16V	C_0805_2012Metric	C22
1	2.2UF_3V3 2.2uF_3V3	C_0603_1608Metric	C24
1	10UF_50V_PD1 10uF_50V_PD1	C_0805_2012Metric	C25
1	22UF_25V_PD1 22uF_25V_PD1	C_0805_2012Metric	C26
1	10UF_50V_PD3 10uF_50V_PD3	C_0805_2012Metric	C27
1	22UF_25V_PD3 22uF_25V_PD3	C_0805_2012Metric	C28
1	12K_RBIAS 12k_RBIAS	R_0603_1608Metric	R5
1	10K_FAULT 10k_FAULT	R_0603_1608Metric	R8
1	120R_CAN	R_0603_1608Metric	R10
1	5.1K_CC1 5.1k_CC1	R_0603_1608Metric	R15
1	5.1K_CC2 5.1k_CC2	R_0603_1608Metric	R16

Openmotorbridge front node design files

The KiCad project lives in the schmidtmt/openmotorbridge repository on GitHub; these links point at the commit this page was built from.

Openmotorbridge front node: common questions

What microcontroller does the Openmotorbridge front node use?

The Openmotorbridge front node is built around the ESP32-S3-WROOM-1U, from the ESP32 family.

How big is the Openmotorbridge front node PCB?

The Openmotorbridge front node measures 82 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Openmotorbridge front node?

49 components, from 49 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Openmotorbridge front node design files?

From the schmidtmt/openmotorbridge repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Openmotorbridge front node design in my own project?

The repository has no license, so all rights stay with schmidtmt. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Openmotorbridge front node without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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