2 layers100 × 60 mm
4 layers40 × 40 mm
BlueSTM32
Keetyn/ENGT481- Size
- 40 × 40 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 90
- Pads
- 311
- Tracks, vias
- 671, 111
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 1 Oct 2024
- Updated
- 22 Jan 2025
Overview
BlueSTM32 is an open-source printed circuit board by Keetyn, from the Keetyn/ENGT481 repository on GitHub. It is a 4-layer board of 40 × 40 mm with 65 parts on 90 nets, routed with 671 tracks and 111 vias.
It is built around the OPA340NA, BQ24040DSQR and DSS14U. Its parts include 23 capacitors, 22 resistors, 7 ICs, 3 diodes and 3 connectors. It belongs with the STM32 boards of this library.
Main components
3
OPA340NA
SOT-23-5SOT-23-5 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
BQ24040DSQR
WSON-10-EP(2x2)0℃~+125℃ 1 1A 1mA 3.5V~28V 4.2V 800mV Charging IC Lithium Battery Support Support WSON-10-EP(2x2) Battery Management ROHSTexas InstrumentsBattery Management
DSS14U
SOD-123FL-55℃~+150℃ 1 Independent 100uA@40V 1A 40A 40V 500mV@1A SOD-123FL Schottky Diodes ROHSSMCSchottky Diodes
README
README.mdENGT481
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100n | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C9, C17, C18, C19, C20, C21, C22 |
| 6 | 5k1 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R5, R6, R7, R9, R10 |
| 5 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C2, C3, C10, C11, C12 |
| 4 | 3k3 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R17, R18, R19, R20 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4, R11, R12 |
| 3 | EXB-28V331JX, 330 Resistor Array | EXB-28V 0804 Resistor Array:EXB28V_PAN | R14, R15, R16 |
| 2 | 0 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R21, R22 |
| 2 | 10pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C24, C25 |
| 2 | 10u | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L2, L4 |
| 2 | 22uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C5 |
| 2 | 4u7 | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C16, C27 |
| 2 | C | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C7, C8 |
| 2 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D2 |
| 2 | R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R2, R3 |
| 1 | 0 ohm | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R8 |
| 1 | 22uH | Inductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder | L1 |
| 1 | 32.768kHz | Custom_Parts:32.768kHz Crystal | X2 |
| 1 | 32MHz | Custom_Parts:32MHz Crystal | X1 |
| 1 | 4.7n | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C13 |
| 1 | 522071233 | Ribbon Cable Connector:CON_522071233_MOL | J2 |
| 1 | BQ24040DSQR | BQ2404DSQR:SON40P200X200X80-11N | U2 |
| 1 | Battery_+ | TestPoint:TestPoint_Pad_D4.0mm | TP1 |
| 1 | Battery_- | TestPoint:TestPoint_Pad_D4.0mm | TP2 |
| 1 | DSS14U | Diode_SMD:D_SOD-123F | D3 |
| 1 | EXB-28V103JX, 10k Resistor Array | EXB-28V 0804 Resistor Array:EXB28V_PAN | R13 |
| 1 | LSM6DSRTR | LSM6DSR IMU:LGA-14L_2P5X3X0P83_STM | U6 |
| 1 | LT1304CS8-3.3-PBF | LT1304 3.3V Regulator:SO-8_S_LIT | U5 |
| 1 | OPA340NA | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | REF2033 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | STM32WB55RGVx | Package_DFN_QFN:QFN-68-1EP_8x8mm_P0.4mm_EP6.4x6.4mm | U8 |
| 1 | TC2030-NL | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J1 |
| 1 | USB4500-03-1-A_REVA | USB4500-03-1-A USB-C Connector:GCT_USB4500-03-1-A_REVA | J3 |
| 1 | W25N02KVZEIR TR | W25N02KVZEIR TR:SON_WSON8_ZE_WIN | U7 |
Questions
How big is the BlueSTM32 PCB?
It measures 40 × 40 mm and has 4 copper layers, 1.6 mm thick.
What parts does the BlueSTM32 use?
65 parts, built around the OPA340NA, BQ24040DSQR and DSS14U. 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 BlueSTM32 KiCad files?
From the Keetyn/ENGT481 repository on GitHub, at the commit this page was made from: the board is BlueSTM32/BlueSTM32.kicad_pcb and its schematic BlueSTM32/BlueSTM32.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BlueSTM32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Keetyn before reusing the design.
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