Open running watch hw
About the Open running watch hw PCB
Open running watch hw is an open source STM32 PCB design by fuad1502, published on GitHub. It is a 4-layer board measuring 41 × 61.9 mm, with 208 components from 68 distinct parts.
Its main chip is the STM32L475RGT6, from the STM32 family. Other key parts include the BLUENRG-232N, TESEO-LIV3F, BGA 725L6 E6327, BQ27441DRZR-G1A and MCP73811T-420I/OT. By type, the board carries 79 capacitors, 65 resistors, 23 ICs, 8 inductors, 7 test points and 6 switches.
It belongs with the rf & radio, wearables and audio designs in this gallery.
From the project
Open source GPS running watch 🏃⌚ (Hardware Repository)
Running is my hobby, and ask anyone who has taken their running hobby seriously and they'll tell you having a GPS running watch is a must. Throughout my time using one, I sometimes encounter issues and thought to myself, "Why does it happen?", "I wish I had access to the raw data", "Why is the latest model way more expensive for just an additional sensor or software feature?", "I wish I could tune my watch to the way I wanted it, for longer battery life or better user experience", etc.
Main components on the Open running watch hw
Open running watch hw bill of materials (BOM)
208 components, 68 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BLUENRG-232N | QFN50P500X500X100-33N-D | IC1 |
| 1 | TESEO-LIV3F | SON110P970X1010X230-18N | IC2 |
| 1 | BGA 725L6 E6327 BGA_725L6_E6327 | BGA725L6E6327 | IC3 |
| 1 | BQ27441DRZR-G1A | BQ27441DRZRG1A | IC4 |
| 1 | MCP73811T-420I/OT MCP73811T-420I_OT | SOT95P270X145-5N | IC5 |
| 1 | TPS62237DRYR | Texas_USON-6_1x1.45mm_P0.5mm_SMD | IC6 |
| 1 | ST1S15J18R | BGA6C40P2X3_94X119X60 | IC7 |
| 1 | TLV9002SIRUGR | QFN50P150X200X40-10N | IC8 |
| 1 | ICP-10100 | ICP10100 | IC9 |
| 1 | NXB0108BQX | NXB0108BQX | IC10 |
| 1 | STM32L475RGT6 | QFP50P1200X1200X160-64N | IC11 |
| 1 | W25N512GVEIG | SON127P800X600X80-9N-D | IC12 |
| 1 | TPS613222ADBVR | SOT95P280X145-5N | IC13 |
| 7 | INA186A5IYFDR | BGA6C40P3X2_117X76X40 | IC14, IC15, IC16, IC17, IC19, IC20, IC22 |
| 1 | PCAL9538ABSHP | QFN50P300X300X100-17N-D | IC18 |
| 1 | LSF0204GU12X | LSF0204GU12X | IC21 |
| 1 | TPS62233DRYR | Texas_USON-6_1x1.45mm_P0.5mm_SMD | U1 |
| 2 | BC847BS,135 BC847BS | SOT-363_SC-70-6 | Q1, Q2 |
| 1 | PMN280ENEAX | PMN280ENEAX | Q3 |
| 2 | BC847BLT1G BC846 | SOT-23 | Q4, Q5 |
Show 48 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ECS-320-12-37B2-7KM-TR | ECS3201237B27KMTR | Y1 |
| 1 | NX3215SA-32.768K-EXS00A-MU00003 | NX3215SA32768KEXS00AMU00003 | Y2 |
| 1 | ECS-.327-7-1210-TR | ECS32791210TR | Y3 |
| 1 | 20021121-00014T4LF | 2002112100014T4LF | J1 |
| 1 | 10118192-0001LF | 101181920001LF | J2 |
| 1 | 1-2328702-0 | 123287020 | J3 |
| 1 | 2328702-4 | 23287024 | J4 |
| 1 | LIS2DE12TR | LIS2DE12TR | AC1 |
| 1 | WLA.04 | WLA04 | ANT1 |
| 1 | PCS.55.A | PCS55A | ANT2 |
| 1 | B39162B4327P810 | FIL_B39162B4327P810 | FL1 |
| 1 | CMT-7525-80-SMT-TR | CMT752580SMTTR | LS1 |
| 1 | RKB2SJM250SMTR LFS RKB2SJM250SMTR_LFS | RKB2SJM250SMTRLFS | S1 |
| 5 | EVQ-P7J01P | EVQP7J01P | S3, S4, S5, S6, S7 |
| 1 | BALF-NRG-02D3 | BALFNRG02D3 | T1 |
| 7 | 5029 | 5029 | TP1, TP2, TP3, TP4, TP6, TP7, TP8 |
| 1 | SFH 7072 SFH_7072 | SFH7072 | LED1 |
| 1 | BAS16LT3G | SOT96P237X111-3N | D1 |
| 1 | MLZ2012N100LT000 10u | L_0805_2012Metric | L1 |
| 1 | LQG15HS10NH02D 10n | L_0402_1005Metric | L2 |
| 1 | LQW15AN5N6G80D 5.6n | L_0402_1005Metric | L3 |
| 2 | LQM2HPN1R0MJ0L 1u | L_1008_2520Metric | L4, L5 |
| 1 | LQM21PNR47MC0D 470n | L_0805_2012Metric | L6 |
| 1 | DFE252012F-2R2M=P2 2.2u | L_1008_2520Metric | L7 |
| 1 | LQG15HN15NG02D 15n | L_0402_1005Metric | L8 |
| 31 | GRM155R71A104MA01D 100n | C_0402_1005Metric | C1, C3, C5, C7, C9, C17, C18, C34 +23 |
| 25 | C0603C105K4RACTU 1u | C_0603_1608Metric | C2, C4, C8, C22, C23, C24, C25, C32 +17 |
| 4 | GRT1555C1H240FA02D 24p | C_0402_1005Metric | C6, C10, C11, C12 |
| 1 | GCQ1555C1HR50CB01D 0.5p | C_0402_1005Metric | C13 |
| 1 | GCQ1555C1HR40CB01D 0.4p | C_0402_1005Metric | C14 |
| 1 | GRM1555C1H2R2CA01D 2.2p | C_0402_1005Metric | C16 |
| 2 | GCM1555C1H121JA16D 120p | C_0402_1005Metric | C19, C21 |
| 1 | GCM155R71H102KA37D 1n | C_0402_1005Metric | C20 |
| 5 | GRM155R60J475ME87J 4.7u | C_0402_1005Metric | C26, C27, C28, C31, C63 |
| 2 | GRM155R60J225ME95J 2.2u | C_0402_1005Metric | C29, C30 |
| 2 | GRM1555C1E3R3WA01D 3.3p | C_0402_1005Metric | C61, C62 |
| 3 | GRM188R60J106ME47J 10u | C_0603_1608Metric | C64, C65, C66 |
| 1 | GRT1555C1H561FA02D 560p | C_0402_1005Metric | C84 |
| 34 | RC0402JR-0710KP 10k | R_0402_1005Metric | R1, R2, R3, R4, R5, R8, R10, R11 +26 |
| 8 | CRF1206-FZ-R010ELF 10m | R_1206_3216Metric | R6, R34, R37, R40, R43, R50, R53, R56 |
| 1 | RC0402FR-132KL 2k | R_0402_1005Metric | R7 |
| 1 | RC0402JR-071ML 1M | R_0402_1005Metric | R9 |
| 3 | AC0402FR-071M5L 1.5M | R_0402_1005Metric | R12, R18, R21 |
| 1 | RC0402JR-7D100KL 100k | R_0402_1005Metric | R13 |
| 2 | RC0402JR-0747RL 47 | R_0402_1005Metric | R14, R22 |
| 1 | AC0402FR-13100RL 100 | R_0402_1005Metric | R16 |
| 1 | RC0402JR-0775RL 75 | R_0402_1005Metric | R23 |
| 13 | AC0402JR-7D0RL 0 | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R36, R39, R42, R45, R48, R52, R55, R58 +5 |
Open running watch hw design files
The KiCad project lives in the fuad1502/open-running-watch-hw repository on GitHub; these links point at the commit this page was built from.
- Layoutopen-running-watch.kicad_pcb
- Schematicopen-running-watch.kicad_sch
Open running watch hw: common questions
What microcontroller does the Open running watch hw use?
The Open running watch hw is built around the STM32L475RGT6, from the STM32 family.
How big is the Open running watch hw PCB?
The Open running watch hw measures 41 × 61.9 mm, has 4 copper layers and is 1.64716 mm thick.
How many components are on the Open running watch hw?
208 components, from 68 distinct parts. The full bill of materials is listed on this page.
Where can I download the Open running watch hw design files?
From the fuad1502/open-running-watch-hw repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Open running watch hw design in my own project?
The repository has no license, so all rights stay with fuad1502. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Open running watch hw 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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