TrailCurrentBearing
trailcurrentoss·TrailCurrentBearing·EDA/trailcurrent-gps-module/trailcurrent-gps-module.kicad_pcb
About the TrailCurrentBearing PCB
TrailCurrentBearing is an open source ESP32 PCB design by trailcurrentoss, published on GitHub under the MIT license. It is a 2-layer board measuring 48.4 × 44.1 mm, with 15 components from 12 distinct parts.
Its main chip is the ESP32-WROOM-32U, from the ESP32 family. Other key parts include the AP63203WU-7 and SN65HVD230. By type, the board carries 6 capacitors, 3 ICs, 3 connectors, 2 resistors and 1 inductor.
It belongs with the rf & radio and iot & wireless designs in this gallery.
From the project
GNSS positioning module providing location and timing data over CAN bus
GNSS (Global Navigation Satellite System) module for precise positioning, timing, and navigation. Part of the TrailCurrent open-source vehicle platform.
TrailCurrent Bearing is a standalone GNSS module that reads data from a DFRobot Gravity GNSS receiver via I2C and distributes it over the CAN bus for other modules to consume.
Example Use Cases: - Digital clocks with precise time synchronization - Navigation and geolocation devices - Geospatial macros that control devices based on pinned locations - Vehicle tracking and positioning systems

Main components on the TrailCurrentBearing
TrailCurrentBearing bill of materials (BOM)
15 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP63203WU-7 | AP63203WU7 | IC1 |
| 1 | SN65HVD230 | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | ESP32-WROOM-32U | ESP32-WROOM-32U | U3 |
| 1 | Conn_01x06 | PinHeader_1x06_P2.54mm_Horizontal | J1 |
| 1 | Conn_01x04 | CAN_PLUS_POWER | J2 |
| 1 | Conn_01x04 | GenericPad_01x04 | J3 |
| 1 | NLV32T-3R9J-EF (3.9uH) | NLV32T-3R9J-EF | L1 |
| 3 | 22uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C5, C6 |
| 1 | 0.1uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2 |
| 1 | 10uF | C_1206_3216Metric | C3 |
| 1 | 100nF | C_1206_3216Metric | C4 |
| 2 | 10k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R4 |
TrailCurrentBearing design files
The KiCad project lives in the trailcurrentoss/TrailCurrentBearing repository on GitHub; these links point at the commit this page was built from.
TrailCurrentBearing: common questions
What microcontroller does the TrailCurrentBearing use?
The TrailCurrentBearing is built around the ESP32-WROOM-32U, from the ESP32 family.
How big is the TrailCurrentBearing PCB?
The TrailCurrentBearing measures 48.4 × 44.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TrailCurrentBearing?
15 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the TrailCurrentBearing design files?
From the trailcurrentoss/TrailCurrentBearing repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the TrailCurrentBearing design in my own project?
Yes, under the terms of its MIT license, which trailcurrentoss chose for the repository.
Can I test firmware for the TrailCurrentBearing 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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