4 layers43 × 95 mm
Oe commutator controller
open-ephys/commutators
Active coaxial commutator for electrophysiology
92 parts5
4 layers43 × 95 mm
Oe commutator controller
open-ephys/commutator-controller2Open Ephys commutator PCB and firmware
- Size
- 43 × 95 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 107
- Nets
- 97
- Pads
- 395
- Tracks, vias
- 998, 336
- Pours
- 17
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Sep 2024
- Updated
- 24 Jul 2026
Overview
Oe commutator controller is an open-source printed circuit board by open-ephys, from the open-ephys/commutator-controller repository on GitHub. It is a 4-layer board of 43 × 95 mm with 107 parts on 97 nets, routed with 998 tracks and 336 vias.
It is built around the RP2040, TMC2130-LA and W25Q128JVSIQ, with the AP2112K-3.3, PTN04050CAZ and ABM8AIG-12.000MHZ-12-2Z-T3 among its other parts. Its parts include 38 capacitors, 34 resistors, 8 ICs, 6 switches and 3 connectors. It belongs with the RP2040 boards of this library.
Main components
11
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
TMC2130-LA
QFN-36-EP(5x6)QFN-36-EP(5x6) Motor Driver ICs ROHSTRINAMIC Motion Control GmbHMotor Driver ICs
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
PTN04050CAZ
SMD-4P,22.1x12.7mmUncategorisedTexas Instruments
ABM8AIG-12.000MHZ-12-2Z-T3
SMD3225-4P-40℃~+125℃ 100Ω 12MHz 12pF ±20ppm ±50ppm SMD3225-4P Crystals ROHSAbraconCrystals
B6B-PH-SM4-TB
SMD,P=2mm-25℃~+85℃ 1 100V 15.95mm 1x6P 2A 2mm 6 6.6mm 6P 7mm Auxiliary Solder Pin Beige Copper alloy PA PH Surface Mount,Vertical Tin UL94V-0 SMD,P=2mm Wire To Board Connector ROHSJSTWire To Board Connector
TPD4E05U06DQAR
USON-10-40℃~+125℃ 0.5pF 10nA 14V 2.5A@8/20us 40W@8/20us 5.5V 6.5V ESD Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Unidirectional USON-10(1x2.5) ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD Protection Devices
TS04-66-50-BK-160-SMT
SMD-4P,6x6mm-30℃~+80℃ 1.6N 12V 50mA 5mm 6mm 6mm 80,000 cycles Gull Wing Round Button SPST-NO Surface Mount,Vertical SMD-4P,6x6mm Tactile Switches ROHSCUITactile Switches
USB4110-GF-A
SMD-40℃~+85℃ 1 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
XZMDKCBDDG45S-9
SMD-4P,3.2x2.8mm-40℃~+85℃ 120° 2.5V、4V、4.1V 20mA 460nm、515nm、645nm 465nm、525nm、630nm 75mW、120mW、123mW 98mcd、108mcd、497mcd Red, Blue, Green Water Clear SMD-4P,3.2x2.8mm LED Indication - Discrete ROHSSunLEDLED Indication - Discrete
README
README.mdCommutator Controller
Open Ephys Commutator Controller hardware and firmware designs.
- This repository contains firmware and PCBs for Rev D and after, i.e. designs using an RP2040.
- The archived commutators repository contains firmware and PCBs for Rev C and before, i.e. designs using a Teensy.
Hardware License
This license pertains to documents in the pcb subdirectory.
This work is licensed to Open Ephys, Inc. under CC BY-NC-SA 4.0. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/4.0
The creation of commercial products using the hardware documentation in this repository is not permitted without an explicit, supplementary agreement between the Licensor and the Licensee. Please get in touch if you are interested in commercially distributing this tool.
Software/Firmware License
This license pertains to source code in the firmware
subdirectory.
Open Ephys Commutator Controller Firmware Copyright (C) Open Ephys, Inc.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
Parts
107| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C6, C7, C10, C11, C13, C18, C19, C27, C28, C31, C32, C36 +2 |
| 9 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R5, R14, R17, R18, R23, R24, R25, R31 |
| 5 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C12, C16, C38, C39 |
| 5 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C25, C30, C33, C35, C37 |
| 4 | 0 | Resistor_SMD:R_0805_2012Metric | R32, R33, R34, R35 |
| 4 | 100 | Resistor_SMD:R_0402_1005Metric | R26, R27, R28, R29 |
| 4 | LOGO | LOGO | G***, G***, G***, G*** |
| 4 | ~ | open-ephys:Touch_Center_2mm | S1, S2, S3, S4 |
| 4 | ~ | MountingHole:MountingHole_2.7mm_M2.5_ISO7380 | H1, H2, H3, H4 |
| 4 | ~ | TestPoint:TestPoint_Pad_D2.0mm | TP1, TP2, TP3, TP4 |
| 2 | 0.47,0.5W | Resistor_SMD:R_1206_3216Metric | R20, R21 |
| 2 | 100uF | Capacitor_SMD:C_Elec_8x10.2 | C21, C24 |
| 2 | 22pF | Capacitor_SMD:C_0402_1005Metric | C14, C15 |
| 2 | 22uF | Capacitor_SMD:C_1206_3216Metric | C22, C23 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R4, R6 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R8, R9 |
| 2 | GND | TestPoint:TestPoint_Pad_D2.0mm | TP5, TP6 |
| 2 | HV0820-2R7305-R | open-ephys:HV0820-2R7305-R | C20, C26 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric | R30 |
| 1 | 0.47uF | Capacitor_SMD:C_0805_2012Metric | C29 |
| 1 | 0015910100 | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical_SMD | J1 |
| 1 | 1.2M | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 1.33k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 1.5M | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 160k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 1K | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 2.2 | Resistor_SMD:R_0603_1608Metric | R19 |
| 1 | 2.49k | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 22nF | Capacitor_SMD:C_0603_1608Metric | C34 |
| 1 | 51k | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | ABM8AIG-12.000MHZ-12-2Z-T3 | Crystal:Crystal_SMD_Abracon_ABM8AIG-4Pin_3.2x2.5mm | Y1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U9 |
| 1 | B6B-PH-SM4-TB | open-ephys:JST_PH_B6B-PH-SM4-TB_1x06-1MP_P2.00mm_Vertical | J3 |
| 1 | CAP1296-x-AIA | Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm | U4 |
| 1 | EVQ-P7J01P | open-ephys:PANASONIC_EVQP7-JA-01P | SW1 |
| 1 | IS31FL3193 | Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.65x2.38mm | U8 |
| 1 | LTC4425 | Package_SO:MSOP-12-1EP_3x4.039mm_P0.65mm_EP1.651x2.845mm | U6 |
| 1 | PTN04050CAZ | open-ephys:TI_R-PDSS_B4_SMD | U5 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U2 |
| 1 | TMC2130-LA | Package_DFN_QFN:QFN-36-1EP_5x6mm_P0.5mm_EP3.6x4.1mm | U7 |
| 1 | TPD4E05U06DQA | Package_SON:USON-10_2.5x1.0mm_P0.5mm | D9 |
| 1 | TS04-66-50-BK-160-SMT | open-ephys:SAMESKY_TS04-66-XX-BK-XXX-SMT-XX | SW2 |
| 1 | USB4110-GF-A | open-ephys:GCT-USB_C_Receptacle_GCT_USB4110 | J2 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U1 |
| 1 | XZMDKCBDDG45S-9 | open-ephys:SUNLED_PLCC4-INV_3.2x2.8x1.9mm | D1 |
| 1 | ~ | open-ephys:OEPS_SN-STICKER-5x5mm | H5 |
Questions
How big is the Oe commutator controller PCB?
It measures 43 × 95 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Oe commutator controller use?
107 parts, built around the RP2040, TMC2130-LA, W25Q128JVSIQ and AP2112K-3.3. 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 Oe commutator controller KiCad files?
From the open-ephys/commutator-controller repository on GitHub, at the commit this page was made from: the board is pcb/oe-commutator-controller.kicad_pcb and its schematic pcb/cap-charger.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Oe commutator controller design in my own project?
Its repository states no licence, so its author keeps all rights: ask open-ephys before reusing the design.
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