Wearable som
ray4477·Senior-design-fit-ml·wearable_v1_hw/wearable_som/wearable_som.kicad_pcb
About the Wearable som PCB
Wearable som is an open source STM32 PCB design by ray4477, published on GitHub under the MIT license. It is a 4-layer board measuring 40.3 × 40 mm, with 48 components from 34 distinct parts.
Its main chip is the STM32WB55RGVX, from the STM32 family. Other key parts include the TPS7A0228PDBVR, DA7280-00FV2, BMI270, MCP73831-2-MC and DLF162500LT-5028A1. By type, the board carries 11 capacitors, 10 resistors, 8 ICs, 3 connectors, 3 switches and 3 test points.
It belongs with the wearables designs in this gallery.
From the project
dance wearables
Main components on the Wearable som
Wearable som bill of materials (BOM)
48 components, 34 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS7A0228PDBVR | SOT95P280X145-5N | IC1 |
| 1 | DA7280-00FV2 | QFN65P300X300X84-12N | IC2 |
| 1 | STM32WB55RGVX STM32WB55RGVx | QFN-68-1EP_8x8mm_P0.4mm_EP6.4x6.4mm | U1 |
| 1 | BMI270 | XDCR_BMI270 | U2 |
| 1 | MCP73831-2-MC | DFN-8-1EP_3x2mm_P0.5mm_EP1.7x1.4mm | U3 |
| 1 | DLF162500LT-5028A1 | DLF-4_1P6X0P8 | U4 |
| 1 | 2450AT18A100E | 2450AT18A100E_JOT | U5 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U6 |
| 1 | Motor_DC | TestPoint_2Pads_Pitch5.08mm_Drill1.3mm | M1 |
| 1 | PMOS | SOT96P240X110-3N | Q1 |
| 1 | CRYSTAL_GND23 Crystal_GND23 | Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | Crystal | Crystal_SMD_MicroCrystal_CC8V-T1A-2Pin_2.0x1.2mm | Y2 |
| 1 | CONN_01X04 Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | USB4105-GF-A | GCT_USB4105-GF-A | J2 |
| 1 | CONN_01X03 Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | Battery_Cell | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | BT1 |
| 1 | Reset | SW_SPST_B3SL-1002P | SW1 |
| 1 | SW_NIDEC_CAS-120A1 SW_Nidec_CAS-120A1 | Nidec_Copal_CAS-120A | SW2 |
| 1 | Boot | SW_SPST_B3SL-1002P | SW3 |
| 3 | TestPoint | TestPoint_THTPad_1.0x1.0mm_Drill0.5mm | TP1, TP2, TP3 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | D_Schottky | SOD2513X120N | D1 |
| 2 | LED | LED_0805_2012Metric | D2, D3 |
| 1 | FerriteBead | L_0805_2012Metric | FB1 |
| 1 | 2.7NH 2.7nH | L_0805_2012Metric | L1 |
| 2 | 10P 10p | C_0805_2012Metric | C1, C2 |
| 6 | 0.1UF 0.1uF | C_0805_2012Metric | C3, C4, C7, C8, C10, C11 |
| 1 | 0.8PF 0.8pF | C_0805_2012Metric | C5 |
| 1 | 0.3PF 0.3pF | C_0805_2012Metric | C6 |
| 1 | 0.1uF | C_0805_2012Metric | C9 |
| 2 | 5.1K 5.1k | R_0805_2012Metric | R1, R2 |
| 3 | 10K 10k | R_0805_2012Metric | R3, R5, R7 |
| 2 | 4.7K 4.7k | R_0805_2012Metric | R4, R6 |
| 2 | 4.7 | R_0805_2012Metric | R8, R9 |
| 1 | R_Variable | PinSocket_1x02_P2.54mm_Horizontal | R10 |
Wearable som design files
The KiCad project lives in the ray4477/Senior-design-fit-ml repository on GitHub; these links point at the commit this page was built from.
Wearable som: common questions
What microcontroller does the Wearable som use?
The Wearable som is built around the STM32WB55RGVX, from the STM32 family.
How big is the Wearable som PCB?
The Wearable som measures 40.3 × 40 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Wearable som?
48 components, from 34 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Wearable som design files?
From the ray4477/Senior-design-fit-ml repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Wearable som design in my own project?
Yes, under the terms of its MIT license, which ray4477 chose for the repository.
Can I test firmware for the Wearable som without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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