4 layers45.5 × 19.6 mm
Stm32 bluet pill
brendose/stm32_bluet_pill
This project is a 1.8V STM32WB55 Bluetooth Module with battery charging. The purpose of this project is to provide a development platform for mobile wearable devices.
93 parts1
4 layers35 × 25 mm
BC832A
tomfleet/immutableanother BLE IMU...
- Size
- 35 × 25 mm
- Copper layers
- 4
- Thickness
- 0.8 mm
- Parts
- 48
- Nets
- 124
- Pads
- 200
- Tracks, vias
- 0, 0
- Pours
- 1
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Jun 2025
- Updated
- 19 Jun 2025
Overview
BC832A is an open-source printed circuit board by tomfleet, from the tomfleet/immutable repository on GitHub. It is a 4-layer board of 35 × 25 mm with 48 parts on 124 nets.
It is built around the AT25SL321-UUE-T, AP2112K-3.3 and IP4234CZ6, with the LSM6DSM and WS2812B-2020 among its other parts. Its parts include 14 capacitors, 13 resistors, 6 ICs, 6 diodes and 4 connectors.
Main components
5
AT25SL321-UUE-T
DBGA-8DBGA-8 NOR FLASH ROHSRenesas ElectronicsNOR FLASH
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
IP4234CZ6
TSOP-6-40℃~+85℃@(Ta) 100W 100nA 3.1pF 5.5V 6V ESD Four channels IEC 61000-4-2、IEC 61000-4-5 TSOP-6 ESD and Surge Protection (TVS/ESD) ROHSNexperiaESD And Surge Protection (TVS/ESD)
LSM6DSM
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 4KB Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
WS2812B-2020
SMD,2.2x2mm0.6mA 0.84mm 120us 160mcd 200mcd 2kHz 2mm 2mm 300ns 470.4nm 515.6nm 520mcd 5V 622.5nm 800Kbit/s Built-in power-on reset circuit、Built-in power-on reset circuit、Integrated intelligent reverse connection protection function Top-mount SMD,2.2x2mm RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | C_Small | bt832lib:C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14 |
| 13 | R_Small | bt832lib:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 |
| 4 | WS2812B-2020 | bt832lib:LED_WS2812B-2020_PLCC4_2.0x2.0mm | D3, D4, D5, D6 |
| 2 | LED | bt832lib:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D1, D2 |
| 2 | SW_Omron_B3FS | bt832lib:SW_SPST_B3U-1000P | SW1, SW2 |
| 1 | 2169900001 | bt832lib:MOLEX_2169900001 | J5 |
| 1 | AP2112K-3.3 | bt832lib:SOT-23-5 | U1 |
| 1 | AT25SL321-U | bt832lib:WLCSP-8_1.551x2.284mm_Layout2x4_P0.5mm | U5 |
| 1 | CP2102N-Axx-xQFN20 | bt832lib:QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm | U2 |
| 1 | Conn_01x02 | bt832lib:PinHeader_1x02_P1.27mm_Vertical | J3 |
| 1 | Conn_01x04 | bt832lib:Molex_Pico-Clasp_501331-0407_1x04-1MP_P1.00mm_Vertical | J4 |
| 1 | Conn_ARM_JTAG_SWD_10 | bt832lib:PinHeader_2x05_P1.27mm_Vertical_SMD | J2 |
| 1 | FerriteBead_Small | bt832lib:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB1 |
| 1 | IP4234CZ6 | bt832lib:SC-74-6_1.55x2.9mm_P0.95mm | U4 |
| 1 | LSM6DSM | bt832lib:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U3 |
| 1 | MP2703GRP-0000-Z | bt832lib:MP2703GRP0000Z | IC1 |
| 1 | Thermistor_NTC | bt832lib:R_0402_1005Metric | TH1 |
| 1 | ~ | bt832lib:bt832a_simple | MOD1 |
Questions
How big is the BC832A PCB?
It measures 35 × 25 mm and has 4 copper layers, 0.8 mm thick.
What parts does the BC832A use?
48 parts, built around the AT25SL321-UUE-T, AP2112K-3.3, IP4234CZ6 and LSM6DSM. 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 BC832A KiCad files?
From the tomfleet/immutable repository on GitHub, at the commit this page was made from: the board is BC832A/BC832A.kicad_pcb and its schematic BC832A/BC832A.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BC832A design in my own project?
Its repository states no licence, so its author keeps all rights: ask tomfleet before reusing the design.
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