bkarl/minimal-watchminimalistic smartwatch
Minimal watch is an open-source printed circuit board by bkarl, from the bkarl/minimal-watch repository on GitHub. It is a 2-layer board of 24.4 × 24.4 mm with 40 parts on 41 nets, routed with 514 tracks and 49 vias.
It is built around the M24SR02-YMC6T/2, OPT4001DTSR and BMA400, with the ABS06-32.768KHZ-T among its other parts. Its parts include 12 diodes, 9 capacitors, 7 resistors, 5 ICs and 5 connectors. It belongs with the wearables boards and the STM32 boards of this library.
This repo contains hardware and software for a minimalistic smartwatch.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | ~ | sw:WL-SBCD_150066RG54050 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 5 | Conn_01x01_Pin | Connector_Wire:SolderWirePad_1x01_SMD_1x2mm | J1, J2, J3, J4, J5 |
| 4 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C3, C4, C8, C9 |
| 3 | 4k7 | Resistor_SMD:R_0402_1005Metric | R5, R6, R7 |
| 2 | 16pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C2 |
| 2 | 180pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C5, C6 |
| 2 | 33 | Resistor_SMD:R_0402_1005Metric | R1, R3 |
| 2 | 330 | Resistor_SMD:R_0402_1005Metric | R2, R4 |
| 1 | ABS06-32.768KHZ-T | sw:XTAL_ABS06-32.768KHZ-T | Y1 |
| 1 | BMA400 | BMA400:QFN_BMA400_BOS | U3 |
| 1 | L | sw:AANI-CH-0029 | L1 |
| 1 | M24SR02-YMC6T/2 | NFC:UFDFPN8_M24SR02_STM | U2 |
| 1 | OPT4001DTSR | sw:DTS0008A-MFG | U5 |
| 1 | STM32L011G4Ux | Package_DFN_QFN:QFN-28_4x4mm_P0.5mm | U1 |
| 1 | ~ | sw:CASIO-F91W-OUTLINE-USB | U4 |
| 1 | ~ | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C7 |
It measures 24.4 × 24.4 mm and has 2 copper layers, 1.6 mm thick.
40 parts, built around the M24SR02-YMC6T/2, OPT4001DTSR, BMA400 and ABS06-32.768KHZ-T. 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.
From the bkarl/minimal-watch repository on GitHub, at the commit this page was made from: the board is hardware/sw.kicad_pcb and its schematic hardware/leds.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask bkarl before reusing the design.
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