4 layers40 × 100 mm
BR Motor
axpaul/Avionic-Mastodonte
Mastodonte experimental rocket avionic (On-board electronics) created by Paul Miailhe, Version 2025
118 parts6CERN-OHL-S-2.0
4 layers20.7 × 10.8 mm
Decoder
phaiderikos/openloco16An open source and open hardware DCC decoder for model locomotives.
- Size
- 20.7 × 10.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 38
- Pads
- 118
- Tracks, vias
- 384, 61
- Pours
- 18
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 31 Mar 2020
- Updated
- 15 Sep 2025
Overview
Decoder is an open-source printed circuit board by phaiderikos, from the phaiderikos/openloco repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 20.7 × 10.8 mm with 24 parts on 38 nets, routed with 384 tracks and 61 vias.
It is built around the DRV8872DDA, XC6206P332MR and SS34, with the PUMH10Z, DTC144EETL and MRF6432(2512)LR150FTS among its other parts. Its parts include 9 capacitors, 4 diodes, 4 transistors, 3 ICs and 2 connectors. It belongs with the STM32 boards of this library.
Main components
6
DRV8872DDA
SO-8-40℃~+125℃ 3.6A 565mΩ Interleaved conduction protection、Current sensing/regulation function Yes SO-8 Brushed DC Motor Drivers ROHSTexas InstrumentsBrushed DC Motor Drivers
XC6206P332MR
SOT-23-40℃~+85℃@(Ta) 1 1uA 200mA 3.3V 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
PUMH10Z
SOT-363-65℃~+150℃ 100 100mA 2 NPN (Pre-Biased) 2.2kΩ 21 300mW 50V 600mV SOT-363 Digital Transistors ROHSNexperiaDigital Transistors
DTC144EETL
SOT-523-3-40℃~+150℃ 1 1 NPN (Pre-Biased) 100mA 150mW 250MHz 300mV@10mA,0.5mA 3V@2mA,0.3V 47kΩ 500mV@100uA,5V 50V 68 NPN SC-75(SOT-416) Digital Transistors ROHSROHM SemiconductorDigital Transistors
MRF6432(2512)LR150FTS
2512150mΩ 2W Current Sense Resistor SMD ±1% ±50ppm/℃ 2512 Current Sense Resistors / Shunt Resistors ROHSSUPCurrent Sense Resistors/Shunt Resistors
README
README.md
An open source and open hardware DCC decoder for locomotives.
Details.
Getting started
A quick introduction to get it working.
PCB
Required PCB capabilities for manifacturing.
BOM
Table.
Assembling
Some notes on component placement and soldering.
Programming
Other notes on SWD.
Wiring
Table and explanation.
Features
- Tiny
- Open Hardware and Open Source
- Fully programmable and customizable
- other
Configuration
Here you should write what are all of the configurations a user can enter when using the project.
Contributing
If you'd like to contribute, please fork the repository and use a feature branch. Pull requests are warmly welcome.
Links
- Project homepage: none
- Repository: https://github.com/federico1564S/openloco
- Issue tracker: https://github.com/federico1564S/openloco/issues
- Related projects:
- 1
- 2
Licensing
This project is licensed under GPL3 license.
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10u | Capacitor_SMD:C_1206_3216Metric | C5, C6, C7, C8 |
| 4 | SS34 | Diode_SMD:D_SMA | D1, D2, D3, D4 |
| 3 | 100n | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4 |
| 3 | PUMH10 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q2, Q3, Q4 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric | C9 |
| 1 | 330n | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | Conn_01x05 | Connector_Pitch:Pitch_1x05_P1.27mm | J2 |
| 1 | Conn_PluX16 | Connector_PluX:PinHeader_2x08_P1.27mm_Vertical_SMD | J1 |
| 1 | DRV8872 | Package_SO:Texas_HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias | U3 |
| 1 | DTC144EETL | Package_TO_SOT_SMD:SOT-416 | Q1 |
| 1 | LOGO | Misc:LOGO | G*** |
| 1 | MRF6432(2512)LR150FTS | Resistor_SMD:R_2512_6332Metric | R1 |
| 1 | STM32L031G6Ux | Package_DFN_QFN:QFN-28_4x4mm_P0.5mm | U2 |
| 1 | XC6206P332MR | Package_TO_SOT_SMD:SOT-23 | U1 |
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Questions
How big is the Decoder PCB?
It measures 20.7 × 10.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Decoder use?
24 parts, built around the DRV8872DDA, XC6206P332MR, SS34 and PUMH10Z. 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 Decoder KiCad files?
From the phaiderikos/openloco repository on GitHub, at the commit this page was made from: the board is hardware/decoder.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Decoder design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).