4 layers49.5 × 29 mm
XESC2
ClemensElflein/xESC
The xESC is an easy to use, low cost electronic speed controller (ESC) design for sensored brushless DC (BLDC) motors.
114 parts378
2 layers69 × 53.8 mm
TrailerMonitor
MikeMcPherson/TrailerMonitor- Size
- 69 × 53.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 22
- Nets
- 42
- Pads
- 121
- Tracks, vias
- 45, 7
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Aug 2026
- Updated
- 3 Oct 2026
Overview
TrailerMonitor is an open-source printed circuit board by MikeMcPherson, from the MikeMcPherson/TrailerMonitor repository on GitHub, published under the MIT licence. It is a 2-layer board of 69 × 53.8 mm with 22 parts on 42 nets, routed with 45 tracks and 7 vias.
It is built around the MAX485ESA+T, LMR51606XDBVR-MS and DMG2305UX-13, with the RASPBERRY PI PICO 2W among its other parts. Its parts include 5 capacitors, 4 resistors, 4 connectors, 2 ICs and 1 transistor. It belongs with the RP2040 and RP2350 boards of this library.
Main components
4
MAX485ESA+T
SOIC-8-40℃~+85℃ 1 1 2.5Mbps 4.75V~5.25V Transceiver SOIC-8 RS-485 / RS-422 ICs ROHSMaxim Integrated (Analog Devices)RS-485 / RS-422 ICs
LMR51606XDBVR-MS
SOT-23-6SOT-23-6 DC-DC Converters ROHSMSKSEMIDC-DC Converters
DMG2305UX-13
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 10.2nC@4.5V 20V 40mΩ@4.5V、52mΩ@2.5V 5A 77pF 808pF 85pF 900mV P-Channel SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETsRASPBERRY PI PICO 2W
-- Raspberry Pi ROHSRaspberry PiRaspberry Pi
README
README.mdTrailerMonitor
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric | C2, C3 |
| 2 | 160 | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C1, C5 |
| 1 | +VIN (7-60 VDC) | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J1 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 19k1 | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 47u | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | DMG2305UX-13 | DMG2305UX_13:SOT91P240X110-3N | Q1 |
| 1 | LED (ModBus Act) | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J4 |
| 1 | LED (Power) | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J3 |
| 1 | LMR51606XDBVR | LMR51606:SOT-23-6-DBV_TEX | U2 |
| 1 | MAX485ESA+ | MAX485ESA:21-0041B_8_MXM | U1 |
| 1 | ModBus | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J2 |
| 1 | RaspberryPi_Pico_2W | Module:RaspberryPi_Pico_Common_THT | A1 |
Questions
How big is the TrailerMonitor PCB?
It measures 69 × 53.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TrailerMonitor use?
22 parts, built around the MAX485ESA+T, LMR51606XDBVR-MS, DMG2305UX-13 and RASPBERRY PI PICO 2W. 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 TrailerMonitor KiCad files?
From the MikeMcPherson/TrailerMonitor repository on GitHub, at the commit this page was made from: the board is TrailerMonitor.kicad_pcb and its schematic TrailerMonitor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TrailerMonitor 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).
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