4 layers170 × 180 mm
4 layers280 × 200 mm
Main Control Unit
Tuskar-Marine/hardware6All tools for the Mermaid's Rest open sailing tools
- Size
- 280 × 200 mm
- Copper layers
- 4
- Thickness
- 1.62 mm
- Parts
- 409
- Nets
- 279
- Pads
- 1,428
- Tracks, vias
- 4,139, 550
- Pours
- 23
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 27 Dec 2023
- Updated
- 8 Nov 2026
Overview
Main Control Unit is an open-source printed circuit board by Tuskar-Marine, from the Tuskar-Marine/hardware repository on GitHub. It is a 4-layer board of 280 × 200 mm with 409 parts on 279 nets, routed with 4,139 tracks and 550 vias.
It is built around the ISO1044BD, SN6501QDBVRQ1 and IS31FL3731-SALS2, with the SMBJ3V3HE3_B/H, DMN6075S and 157119S12701 among its other parts. Its parts include 114 resistors, 92 capacitors, 47 diodes, 15 transistors and 2 connectors.
Main components
12
ISO1044BD
SOIC-8-40℃~+125℃ 1.71V~1.89V、2.25V~5.5V、4.5V~5.5V 5Mbps 70mA CAN FD Transceiver SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN Transceivers
SN6501QDBVRQ1
SOT-23-5SOT-23-5 Transformer Drivers ROHSTexas InstrumentsAC-DC Controllers And Regulators
IS31FL3731-SALS2
SSOP-28-208mil-40℃~+85℃ 18 2.7V~5.5V 3.2mA 400kHz Analog、PWM DC-DC Keyboard scanning SSOP-28-208mil LED Drivers ROHSISSILED Drivers
SMBJ3V3HE3_B/H
DO-214AA(SMB)-65℃~+175℃ 1 10.3V 200A@8/20us 200uA 3.3V 4.1V 5.2nF 600W@10/1000us TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHSVishay IntertechnologyESD And Surge Protection (TVS/ESD)
DMN6075S
SOT-23-55℃~+150℃ 1 N-channel 125mΩ@4.5V 19.5pF 247pF 350mW 3A 500mV 60V SOT-23 MOSFETs ROHSTECH PUBLICMOSFETs
157119S12701
DIP-100.39 1 13mmx10mmx7mm 52mW 7 Segment Common Cathode Red DIP-10 LED Segment Displays ROHSWürth ElektronikLED Segment DisplaysSMBJP6KE18CAQ-TP
-- Lack of specifications ROHSMicro Commercial ComponentsUncategorised
1N5822RL
DO-201AD1 Independent 2mA@40V 3A 40V 80A 950mV@9.4A DO-201AD Schottky Diodes ROHSSTMicroelectronicsSchottky DiodesTPD2E2U06QDBZRQ1
SOT-23-40℃~+125℃ 1.5pF 10nA 12.4V 2 5.5A@8/20us 5.5V 75W@8/20us 8.5V ESD IEC 61000-4-2 Unidirectional SOT-23 ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsUncategorised
ACT1210-101-2P-TL00-CND
SMD-4P,3.3x2.5mmSMD-4P,3.3x2.5mm Common Mode Filters ROHSCND-tekCommon Mode FiltersPESD2CANFD54VT-QR
TO-236ABTO-236AB ESD and Surge Protection (TVS/ESD) ROHSNexperiaUncategorisedAP7583AQ-MP
MSOP-8-EP-40℃~+125℃ 1 3.3V 300mA 3uA 42V 70dB@(100Hz) Fixed PG Pin、Short Circuit Protection、Thermal Shutdown Positive MSOP-8-EP Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdMermaids-Rest
All tools for the Mermaid's Rest open sailing tools
Note: Patches and PRs are welcome, but at this stage of the project, I need to be able to understand / fix the code. Good comments and references to reading material will be grately appreciated! ^_^
If/when the project gets outside interest, I'll step out of the way of the much more talented folks.
Parts
409| Qty | Value | Footprint | References |
|---|---|---|---|
| 63 | 0.1uF | mr-stuff:TDK FA 2.5mm | C1, C2, C12, C13, C14, C15, C16, C17, C19, C20, C25, C26, C27, C28, C29, C30 +47 |
| 45 | LED | mr-stuff:Kingbright WP383SURDTK | LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +29 |
| 28 | 4.7K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R30, R31, R36, R39, R40, R42, R43, R63, R65, R67, R69, R71, R73, R75, R110, R111 +12 |
| 27 | 475 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R62, R64, R66, R68, R70, R72, R74, R76, R100, R101, R102, R103, R104, R105, R106, R107 +11 |
| 19 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R11, R13, R14, R22, R25, R28, R34, R44, R46, R48, R50, R52, R54, R56, R60 +3 |
| 19 | SMBJ3V3HE3_B/H | mr-stuff:Vishay SMBJ3V3HE3 | TVS13, TVS14, TVS15, TVS16, TVS17, TVS18, TVS19, TVS20, TVS21, TVS22, TVS23, TVS24, TVS25, TVS26, TVS27, TVS28 +3 |
| 10 | DMN6075S | Package_TO_SOT_SMD:SOT-23 | Q1, Q3, Q5, Q6, Q7, Q8, Q10, Q12, Q14, Q15 |
| 9 | MountingHole_Pad | MountingHole:MountingHole_4mm_Pad_Via | H1, H2, H3, H4, H5, H6, H7, H8, H9 |
| 8 | VOLA617A | mr-stuff:Vishay VOLA617A | OI1, OI2, OI3, OI4, OI5, OI6, OI7, OI8 |
| 7 | 147 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R21, R45, R47, R49, R51, R53, R55 |
| 6 | 157119S12701 | mr-stuff:Wurth 157119 | SSD1, SSD2, SSD3, SSD4, SSD5, SSD6 |
| 6 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R16, R19, R23, R26, R29, R33 |
| 6 | SMBJP6KE18CAQ | mr-stuff:MCC SMBJP6KE18CAQ-TP | TVS3, TVS4, TVS5, TVS6, TVS7, TVS8 |
| 5 | 10uF | mr-stuff:TDK CGA5 | C7, C39, C42, C43, C46 |
| 5 | 1nF | mr-stuff:Knowles Syfer 2211JA25 | C4, C83, C84, C85, C86 |
| 5 | BSS314PE | Package_TO_SOT_SMD:SOT-23 | Q2, Q4, Q9, Q11, Q13 |
| 4 | 1N5822RL | mr-stuff:STM 1N5822RL | SD1, SD2, SD3, SD4 |
| 4 | 3.3K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 4 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R10, R15, R18 |
| 4 | PZU15B2,115 | mr-stuff:Nexperia PZU15 | ZD4, ZD8, ZD11, ZD13 |
| 4 | TPD2E2U06QDBZRQ1 | mr-stuff:TI TPD2E2U06 | TVS32, TVS33, TVS34, TVS35 |
| 3 | 10 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R57, R58, R59 |
| 3 | 100k | mr-stuff:Stackpole RMCA0805 | R112, R113, R114 |
| 3 | 100uF | Capacitor_THT:CP_Radial_D8.0mm_P5.00mm | C21, C22, C23 |
| 3 | 1862411 | mr-stuff:Phoenix Contact 1862411 | TB6, TB7, TB8 |
| 3 | 1uF | mr-stuff:Kemet R82DC | C10, C18, C24 |
| 3 | 20K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R17, R20, R37 |
| 3 | ACT12101012PTL00 | mr-stuff:TDK ACT12101012PTL00 | CMC1, CMC2, CMC3 |
| 3 | Fiducial | Fiducial:Fiducial_0.5mm_Mask1mm | FID1, FID2, FID3 |
| 3 | ISO1044BD | mr-stuff:TI ISO1044BDR | ICT1, ICT2, ICT3 |
| 3 | PESD2CANFD54VT-QR | mr-stuff:Nexperia PESD2CANFD | TVS2, TVS11, TVS12 |
| 2 | 0.01uF | mr-stuff:TDK FA 2.5mm | C9, C92 |
| 2 | 0.1uF | mr-stuff:Kyocera AVX 08051A0R8CAT2A | C41, C45 |
| 2 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R108, R109 |
| 2 | 120 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R38, R41 |
| 2 | 16pF | mr-stuff:Kemet C0603X | C87, C88 |
| 2 | 1N4148 | mr-stuff:Onsemi 1N4148 | D1, D2 |
| 2 | 2.2uF | mr-stuff:Murata GCJ31CR71A | C40, C44 |
| 2 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R12 |
| 2 | 22uF | mr-stuff:Murata GCJ31CR71A | C6, C8 |
| 2 | 63.4 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R24, R27 |
| 2 | 760390014 | mr-stuff:Wurth 760390014 | T1, T2 |
| 2 | AP7583AQ | mr-stuff:Diodes Inc AP7583AQ-50MP-13 | LVR3, LVR4 |
| 2 | BAT54CW-QF | mr-stuff:Nexperia BAT54 | SBD1, SBD2 |
| 2 | BZX84B5V6 | mr-stuff:MCC BZX84B5V6 | ZD1, ZD2 |
| 2 | ISO1642DWR | mr-stuff:TI ISO1642DWR | BII1, BII2 |
| 2 | M24C64 | mr-stuff:STM M24C64-RMN6P | ROM1, ROM2 |
| 2 | NetTie_2 | mr-stuff:NetTie-2_SMD_Pad0.4mm | NT1, NT2 |
| 2 | SN6501QDBVRQ1 | mr-stuff:TI SN6501 | TD1, TD2 |
| 2 | TE 1-1393277-4 | mr-stuff:TE 1-1393277-4 | RL1, RL2 |
| 2 | TPSMC27CA | mr-stuff:Littelfuse TPSMC | TVS9, TVS10 |
| 2 | To Load | mr-stuff:Keystone 7799 | TB2, TB4 |
| 1 | 100pF | mr-stuff:Kemet C0805X | C91 |
| 1 | 10uF | mr-stuff:Nichicon UBT | C3 |
| 1 | 12.60378 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | OX1 |
| 1 | 1862440 | mr-stuff:Phoenix Contact 1862440 | TB1 |
| 1 | 200K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R32 |
| 1 | 20R | Resistor_SMD:R_2512_6332Metric | R35 |
| 1 | 4.7uF | mr-stuff:Murata RCER71E | C11 |
| 1 | 782853601 | mr-stuff:Würth 782853601 | FB1 |
| 1 | AHEF100 | mr-stuff:Littelfuse AHEF100 | PTC1 |
| 1 | BD33C0AFP-CE2 | mr-stuff:Rohm BD33C0 | LVR2 |
| 1 | BD450S5FP-CE2 | mr-stuff:Rohm BD4xxS5 TO252-3 | LVR1 |
| 1 | Board I2C | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | TP5 |
| 1 | Board Power | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | TP2 |
| 1 | Boot | mr-stuff:SW_TS03-66-50-BK-160-LCR-D-67 | SW1 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J3 |
| 1 | Conn_02x05_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical | SWD1 |
| 1 | DE9 Female, right angle | mr-stuff:Amphenol_L77SDE09SA4CH4F | DE1 |
| 1 | From Power | mr-stuff:Keystone 7799 | TB5 |
| 1 | Future Use | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J2 |
| 1 | IS31FL3731-SA | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | CPD1 |
| 1 | L17H2330131 | mr-stuff:Amphenol_L17H2330131 | DA1 |
| 1 | L17H2440131 | mr-stuff:Amphenol_L17H2440131 | DA2 |
| 1 | L17H2660131 | mr-stuff:Amphenol_L17H2660131 | DB1 |
| 1 | L777SDE09PA4CH4F | mr-stuff:Amphenol L777SDE09PA4CH4F | DE2 |
| 1 | LOGO | mr-stuff:Mermaid Silkscreen - 29.9mm | TDM*** |
| 1 | M10KW CAN | mr-stuff:PinHeader_1x05_P2.54mm_Vertical_No_Pin_3 | TP10 |
| 1 | M10KW Power | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | TP4 |
| 1 | M5KW CAN | mr-stuff:PinHeader_1x05_P2.54mm_Vertical_No_Pin_3 | TP9 |
The 388 most common of 409 parts.
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Questions
How big is the Main Control Unit PCB?
It measures 280 × 200 mm and has 4 copper layers, 1.62 mm thick.
What parts does the Main Control Unit use?
409 parts, built around the ISO1044BD, SN6501QDBVRQ1, IS31FL3731-SALS2 and SMBJ3V3HE3_B/H. 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 Main Control Unit KiCad files?
From the Tuskar-Marine/hardware repository on GitHub, at the commit this page was made from: the board is projects/helm-controller/Main Control Unit.kicad_pcb and its schematic projects/battery-display/Battery Display.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Main Control Unit design in my own project?
Its repository states no licence, so its author keeps all rights: ask Tuskar-Marine before reusing the design.