AnalogWatch
About the AnalogWatch PCB
AnalogWatch is an open source STM32 PCB design by sulkith, published on GitHub under the MIT license. It is a 2-layer board measuring 31 × 31 mm, with 70 components from 8 distinct parts.
Its main chip is the STM32L432KCUx, from the STM32 family. Other key parts include the BMA456-Projectspecific. By type, the board carries 42 diodes, 17 resistors, 6 capacitors, 2 ICs, 1 crystal and 1 connector.
It belongs with the wearables designs in this gallery.
From the project
WristWatch
Main components on the AnalogWatch
AnalogWatch bill of materials (BOM)
70 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BMA456-Projectspecific | LGA-12_2x2mm_P0.5mm | IC1 |
| 1 | STM32L432KCUx | QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U1 |
| 1 | Crystal | Crystal_SMD_2012-2Pin_2.0x1.2mm_HandSoldering | Y1 |
| 1 | Conn_01x10_MountingPin | TE_1-1734839-0_1x10-1MP_P0.5mm_Horizontal | J1 |
| 1 | Battery_Cell | BatteryHolderCR2032 | BT1 |
| 42 | LED | LED_0603_1608Metric | D11, D12, D13, D14, D15, D16, D17, D18 +34 |
| 6 | C | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6 |
| 17 | R | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R11, R12, R13, R14, R21, R22, R23 +9 |
AnalogWatch design files
The KiCad project lives in the sulkith/BCDWristWatch repository on GitHub; these links point at the commit this page was built from.
AnalogWatch: common questions
What microcontroller does the AnalogWatch use?
The AnalogWatch is built around the STM32L432KCUx, from the STM32 family.
How big is the AnalogWatch PCB?
The AnalogWatch measures 31 × 31 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AnalogWatch?
70 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the AnalogWatch design files?
From the sulkith/BCDWristWatch repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the AnalogWatch design in my own project?
Yes, under the terms of its MIT license, which sulkith chose for the repository.
Can I test firmware for the AnalogWatch 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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