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Openmotorbridge smart keyfob

schmidtmt·openmotorbridge·hardware/kicad_smart_keyfob/openmotorbridge_smart_keyfob.kicad_pcb

Openmotorbridge smart keyfob PCB layout, top view — open source ESP32 board by schmidtmt

About the Openmotorbridge smart keyfob PCB

Openmotorbridge smart keyfob is an open source ESP32 PCB design by schmidtmt, published on GitHub. It is a 2-layer board measuring 38 × 19 mm, with 22 components from 21 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 and SW3526_USB_PD1_20W. By type, the board carries 5 ICs, 4 capacitors, 3 crystals, 2 antennas, 2 switches and 2 resistors.

It belongs with the rf & radio and iot & wireless 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 smart keyfob

ESP32-S3-WROOM-1UUSB2514BI-AEZGTPS54302_5V_BUCKTPS2051B_PORT2_GATESW3526_USB_PD1_20W

Openmotorbridge smart keyfob bill of materials (BOM)

22 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1U
nRF52840-QIAA
U1
1
USB2514BI-AEZG
SX1262IMLTRT
U2
1
TPS54302_5V_BUCK
DRV2605LDGSR
U3
1
TPS2051B_PORT2_GATE
BQ51003YFPR
U4
1
SW3526_USB_PD1_20W
BQ25100YFPR
U5
1
LRA_MOTOR_PADS
M1
1
24.000MHZ
32.000MHz
Y1
1
32.768kHz
Y2
1
32MHz_TCXO
Y3
1
868MHz_CHIP_ANT
ANT1
1
2.4GHz_BLE_ANT
ANT2
1
CPT-9019S_BUZZER
LS1
1
BTN_ARM
SW1
1
BTN_SOS
SW2
1
WS2812B-2020
D1
1
4.7UH_POWER_CHOKE
4.7uH_DCDC
L1
1
10uF_VBAT
C1
1
10uF_3V3
C2
1
100nF_MCU
C3
1
100nF_LORA
C4
Show 1 more
QtyPartRefs
2
10k_PULLUP
R1, R2

Openmotorbridge smart keyfob 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 smart keyfob: common questions

What microcontroller does the Openmotorbridge smart keyfob use?

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

How big is the Openmotorbridge smart keyfob PCB?

The Openmotorbridge smart keyfob measures 38 × 19 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Openmotorbridge smart keyfob?

22 components, from 21 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 smart keyfob 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 smart keyfob 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 smart keyfob 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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