2 layers80 × 80 mm
OSBAMS PCB
hle12345/OSBAMS
Moved here on 2026-10-01. The Rev.1 80x80 mm carrier PCB is a proven-prototype reference (circuits and interfaces that worked), not a design to revise or manufacture.
20 partsMIT
4 layers100 × 90 mm
OSBAMS Rev2 RC1
hle12345/OSBAMSMoved here on 2026-10-01. The Rev.1 80x80 mm carrier PCB is a proven-prototype reference (circuits and interfaces that worked), not a design to revise or manufacture.
- Size
- 100 × 90 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 149
- Nets
- 122
- Pads
- 418
- Tracks, vias
- 733, 522
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Oct 2026
- Updated
- 31 Oct 2026
Overview
OSBAMS Rev2 RC1 is an open-source printed circuit board by hle12345, from the hle12345/OSBAMS repository on GitHub, published under the MIT licence. It is a 4-layer board of 100 × 90 mm with 149 parts on 122 nets, routed with 733 tracks and 522 vias.
It is built around the CP2102N-A02-GQFN20, LMR14006YDDCR and USBLC6-2SC6, with the VO610A-1, ISO7721DR-Y and CRCW060310K0FKEAC among its other parts. Its parts include 43 resistors, 33 capacitors, 13 diodes, 8 ICs and 6 connectors.
Main components
12
CP2102N-A02-GQFN20
QFN-20-EP(3x3)-40℃~+85℃ 195uA 3Mbps 3V~3.6V 9.5mA USB 2.0 USB to UART QFN-20-EP(3x3) USB Converters ROHSSilicon LabsUSB Converters
LMR14006YDDCR
TSOT-23-6-40℃~+125℃@(TJ) 1 2.1MHz 28uA 4V~40V 600mA 765mV~38.4V Adjustable Buck Buck Built-in No TSOT-23-6 DC-DC Converters ROHSTexas InstrumentsDC-DC ConvertersUSBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
VO610A-1
DIP-4-55℃~+110℃ 1 1.25V 13% 300mV@10mA,1mA 3us 4.7us 50mA 600V 60mA 6V 70V 80% DC Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSVishay IntertechnologyTransistor, Photovoltaic Output Optoisolators
ISO7721DR-Y
SOIC-8SOIC-8 Digital Isolators ROHSYLPTECDigital Isolators
CRCW060310K0FKEAC
0603-55℃~+155℃ 100mW 10kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface MountCRCW06031K00FKEA
0603-55℃~+155℃ 100mW 1kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface MountCRCW06034K70FKEAC
0603-55℃~+155℃ 100mW 4.7kΩ Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
GRM21BR61A475KA73L
080510V 4.7uF X5R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSMurataMultilayer Ceramic Capacitors MLCC - SMD/SMT
1.5SMBJ48A
DO-214AA(SMB)1.5kW@10/1000us 19.4A 1uA 48V 53.3V 77.4V TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHSBORNESD And Surge Protection (TVS/ESD)CRCW060310R0FKEAC
0603-55℃~+155℃ 100mW 10Ω 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
CRCW12064K70FKEAC
1206-55℃~+155℃ 200V 250mW 4.7kΩ Thick Film Resistor ±1% ±100ppm/℃ 1206 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
README
legacy/reference/rev1_kicad/README.mdRev.1 KiCad source — REFERENCE ONLY
Moved here on 2026-10-01. The Rev.1 80x80 mm carrier PCB is a proven-prototype reference (circuits and interfaces that worked), not a design to revise or manufacture. It carries a known diode-polarity defect (symbol pin 1 = anode vs footprint pad 1 = cathode on D1-D3) and no PA0/PA1/PC9 circuits.
The Rev.2 controller is a new design in Hardware/Rev2_Controller/.
root_duplicate_project/ holds the second, smaller .kicad_pro/.kicad_prl that used to sit in the repo root.
tools/mfg still reads these files only for the regression tests that reproduce the Rev.1 defect.
Parts
149| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 100nF | Capacitor_SMD:C_0603_1608Metric | C3, C10, C11, C12, C13, C14, C17, C18, C21, C23, C24, C25, C27, C29, C32, C33 +2 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R6, R16, R22, R37 |
| 5 | 1k | Resistor_SMD:R_0603_1608Metric | R5, R7, R20, R32, R40 |
| 4 | 4.7k | Resistor_SMD:R_0603_1608Metric | R14, R15, R35, R36 |
| 4 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C7, C15, C20, C22 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3 | MH1, MH2, MH3, MH4 |
| 3 | 1.5SMBJ48A | Diode_SMD:D_SMB | D5, D6, D7 |
| 3 | 10 | Resistor_SMD:R_0603_1608Metric | R11, R12, R13 |
| 3 | 4.7k | Resistor_SMD:R_1206_3216Metric | R26, R27, R28 |
| 3 | BAT54S | Package_TO_SOT_SMD:SOT-23 | D8, D13, D14 |
| 3 | FID | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3 |
| 2 | 10 | Resistor_SMD:R_1206_3216Metric | R42, R43 |
| 2 | 100 | Resistor_SMD:R_0603_1608Metric | R33, R34 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R3, R31 |
| 2 | 100nF 50V | Capacitor_SMD:C_0603_1608Metric | C26, C28 |
| 2 | 10nF | Capacitor_SMD:C_0603_1608Metric | C30, C31 |
| 2 | 10uF 50V | Capacitor_SMD:C_1210_3225Metric | C1, C2 |
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D11, D12 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C5, C6 |
| 2 | 47k | Resistor_SMD:R_0603_1608Metric | R25, R29 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 75k 0.1% | Resistor_SMD:R_0805_2012Metric | R17, R18 |
| 2 | GND | TestPoint:TestPoint_Pad_D1.5mm | TP4, TP5 |
| 2 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U9, U10 |
| 2 | VO610A-1 | Package_DIP:DIP-4_W7.62mm | U4, U5 |
| 1 | +12V | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | 100nF (bootstrap) | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 10k 0.1% | Resistor_SMD:R_0805_2012Metric | R19 |
| 1 | 10uH | Inductor_SMD:L_Bourns_SRN6045TA | L1 |
| 1 | 12V_IN | OSBAMS_Rev2:EB21A-02-C | J1 |
| 1 | 19.1k | Resistor_SMD:R_0603_1608Metric | R38 |
| 1 | 1A fast | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C16 |
| 1 | 2.2k | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R21 |
| 1 | 270k | Resistor_SMD:R_0603_1608Metric | R30 |
| 1 | 3.3k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 33.2k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 3V3 | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | 3V3 ON | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | 3V3_A | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | 3V3_HOST | TestPoint:TestPoint_Pad_D1.5mm | TP27 |
| 1 | 4.7nF 100V | Capacitor_SMD:C_0805_2012Metric | C19 |
| 1 | 47 | Resistor_SMD:R_1206_3216Metric | R41 |
| 1 | 47.5k | Resistor_SMD:R_0603_1608Metric | R39 |
| 1 | 5.6k | Resistor_SMD:R_0603_1608Metric | R24 |
| 1 | 600R@100MHz | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | ADC_SENSE | TestPoint:TestPoint_Pad_D1.5mm | TP13 |
| 1 | ARM | OSBAMS_Rev2:EB21A-02-C | J3 |
| 1 | ARM_SENSE | TestPoint:TestPoint_Pad_D1.5mm | TP18 |
| 1 | BOOT0 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | COIL ON | LED_SMD:LED_0805_2012Metric | D10 |
| 1 | COIL_SW | TestPoint:TestPoint_Pad_D1.5mm | TP15 |
| 1 | COIL_V | TestPoint:TestPoint_Pad_D1.5mm | TP16 |
| 1 | CP2102N | Package_DFN_QFN:SiliconLabs_QFN-20-1EP_3x3mm_P0.5mm_EP1.8x1.8mm | U6 |
| 1 | ESTOP | OSBAMS_Rev2:EB21A-02-C | J2 |
| 1 | ESTOP_SENSE | TestPoint:TestPoint_Pad_D1.5mm | TP17 |
| 1 | GATE | TestPoint:TestPoint_Pad_D1.5mm | TP14 |
| 1 | GND_HOST | TestPoint:TestPoint_Pad_D1.5mm | TP25 |
| 1 | HEARTBEAT | LED_SMD:LED_0805_2012Metric | D4 |
| 1 | INA228 | Package_SO:MSOP-10_3x3mm_P0.5mm | U2 |
| 1 | INA_IN+ | TestPoint:TestPoint_Pad_D1.5mm | TP10 |
| 1 | INA_IN- | TestPoint:TestPoint_Pad_D1.5mm | TP11 |
| 1 | IRLML0060 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ISO7721 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | K1_COIL | OSBAMS_Rev2:EB21A-02-C | J4 |
| 1 | LMR14006Y | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | LOAD_EN | TestPoint:TestPoint_Pad_D1.5mm | TP26 |
| 1 | NRST | TestPoint:TestPoint_Pad_D1.5mm | TP22 |
| 1 | PACK_SENSE | Connector_Molex:Molex_KK-254_AE-6410-04A_1x04_P2.54mm_Vertical | J6 |
| 1 | RELAY_FB | TestPoint:TestPoint_Pad_D1.5mm | TP19 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_PTS810 | SW1 |
| 1 | S1M | Diode_SMD:D_SMA | D9 |
| 1 | SCL1 | TestPoint:TestPoint_Pad_D1.5mm | TP7 |
| 1 | SCL2 | TestPoint:TestPoint_Pad_D1.5mm | TP9 |
| 1 | SDA1 | TestPoint:TestPoint_Pad_D1.5mm | TP6 |
| 1 | SDA2 | TestPoint:TestPoint_Pad_D1.5mm | TP8 |
| 1 | SHUNT_KELVIN | Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J5 |
| 1 | SMBJ15A | Diode_SMD:D_SMB | D1 |
The 138 most common of 149 parts.
More from hle12345/OSBAMS
2- 2 layers30 × 18 mm
OSBAMS Rev2 TC74 Probe RC1
hle12345/OSBAMS
Moved here on 2026-10-01. The Rev.1 80x80 mm carrier PCB is a proven-prototype reference (circuits and interfaces that worked), not a design to revise or manufacture.
5 partsMIT
Similar boards
- 2 layers57 × 85 mm
- 6 layers450 × 235 mm
Baseline
DeadlySIn777/Controller
Unfinished CNC controller motherboard: native KiCad sources, rules, DSN and global routing review
2,723 parts - 4 layers90 × 66 mm
Audio
AndreasNielsen4000/Group-7-IoT-Project
The project is a wireless speaker system that can play music from a Bluetooth or WiFi source. The system consists of four main parts with subcomponents:
162 parts1 - 4 layers70 × 70 mm
HUSB238A Dev Board
SK-Electronics-Consulting/electronics-widgets
Small, Custom Tools for Electronics
44 parts1 - 2 layers79.5 × 79.5 mm
Esp32-energymeter V2
ElektorLabs/esp32-energymeter
The Elektor ESP32 Energy Meter project, featuring schematics, PCB designs, and ESPHome integration for advanced energy monitoring
116 parts48MIT - 4 layers152.4 × 76.2 mm
Motherboard
mikegoelzer/Homebrew-ECP5-SBC
Kicad files for homebrew hobbyist computer with custom RISC-V CPU
160 parts - 2 layers76.2 × 122.2 mm
Calculator full schematic revB
SCREAM325/TI_INFINITY
contains PCB file for PCBway and GCODE files for speaker case.
116 parts - 4 layers118 × 250 mm
Questions
How big is the OSBAMS Rev2 RC1 PCB?
It measures 100 × 90 mm and has 4 copper layers, 1.6 mm thick.
What parts does the OSBAMS Rev2 RC1 use?
149 parts, built around the CP2102N-A02-GQFN20, LMR14006YDDCR, USBLC6-2SC6 and VO610A-1. 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 OSBAMS Rev2 RC1 KiCad files?
From the hle12345/OSBAMS repository on GitHub, at the commit this page was made from: the board is Hardware/Rev2_Controller/OSBAMS_Rev2_RELEASE_CANDIDATE_1/OSBAMS_Rev2_RC1.kicad_pcb and its schematic Hardware/Rev2_Controller/OSBAMS_Rev2_RELEASE_CANDIDATE_1/01_Power_Input.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the OSBAMS Rev2 RC1 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).