Smartwatch PCB Design Guide
Placed components
5:26
Placed 50 component(s): TP2, TP6, R3, R10, SW1, C11, R12, R6, U1, U6, TP10, C15, TP5, U3, C13, C16, R9, U2, R2, C3, TP4, TP3, C14, C2, SW3, TP9, J2, U7, R5, C4, C10, C1, TP8, R1, R7, J1, C12, DS1, C7, R8, R4, TP7, C5, TP1, R11, SW2, C9, D1, C8, C6
Thought
51 days
Work done
- Resized the PCB to 100 × 75 mm, 4-layer, to add routing margin while staying within a common prototype size.
- Re-placed the layout so DS1 remains top-side, while U4/MAX30102 and U5/MLX90614 are on the bottom wrist side, close together near the center beneath the OLED.
- Kept the ESP32-C3 antenna at the edge facing outward, with USB-C, battery connector, switch, and power parts arranged away from the sensor cluster.
- ✅ Skin-touch sensors are now bottom-side and centered under the OLED.
- ✅ OLED remains top-side and antenna placement was preserved at the board edge.
- ❌ Routing is not complete: the latest validation still reported 87 airwires and 12 overlapping-copper issues before the final re-placement, and I could not continue to reroute/validate further.
- ❌ Manufacturing export files were not generated, because export should only happen after DRC is clean.
- Run routing cleanup/autorouting next, then re-check DRC until airwires and copper conflicts are cleared.
- After DRC is clean, generate the Gerber, BOM, and pick-and-place manufacturing package.
U4
U5
U3
DS1
J1 CC2 - R4 P1
U2 PROG - R7 P1
R5 P2 - J1 D+
U1 3V3 - U3 VOUT
J1 VBUS - U2 VDD
U1 IO4 - U4 SDA
U6 INT - U1 IO1
J2 P1 - U2 VBAT
J1 D- - TP5 P1
U1 3V3 - U3 VOUT
U6 CPOUT - C16 P1
U1 IO18 - R6 P1
U1 IO6 - J3 Pin_3
U1 IO4 - U4 SDA
U2 PROG - R7 P1
U1 3V3 - U3 VOUT
U1 IO5 - U4 SCL
U4 ~INT - U1 IO8
U1 EN - R8 P2
J1 CC2 - R4 P1
R6 P2 - J1 D-
J1 D+ - TP4 P1
J1 D- - TP5 P1
U1 3V3 - U3 VOUT
R5 P2 - J1 D+
U2 STAT - R12 P2
U1 IO7 - J3 Pin_4
J1 VBUS - U2 VDD
U1 IO4 - U4 SDA
R6 P2 - J1 D-
U1 3V3 - U3 VOUT
U1 IO5 - U4 SCL
U1 IO4 - U4 SDA
U1 TXD - TP9 P1
U1 IO2 - J3 Pin_7
U1 IO10 - J3 Pin_5
U4 ~INT - U1 IO8
U1 IO0 - R10 P2
U1 IO6 - J3 Pin_3
U2 STAT - R12 P2
U1 3V3 - U3 VOUT
U1 3V3 - U3 VOUT
U3 EN - D1 K
U1 IO9 - U6 INT
U1 RXD - TP10 P1
U1 3V3 - U3 VOUT
U1 3V3 - U3 VOUT
U1 RXD - TP10 P1
U1 3V3 - U3 VOUT
U1 IO9 - U6 INT
SW1 ~ - U3 VIN
U1 IO0 - R10 P2
U1 3V3 - U3 VOUT
U1 3V3 - U3 VOUT
U1 IO10 - J3 Pin_5
U1 3V3 - U3 VOUT
U1 IO5 - U4 SCL
U6 INT - U1 IO1
U1 3V3 - U3 VOUT
U1 IO5 - U4 SCL
U1 IO18 - R6 P1
U1 3V3 - U3 VOUT
J1 D+ - TP4 P1
U1 IO19 - R5 P1
U1 EN - R8 P2
J1 VBUS - U2 VDD
J2 P1 - U2 VBAT
U6 REGOUT - C15 P1
U1 IO9 - U6 INT
J1 VBUS - U2 VDD
U1 IO3 - J3 Pin_6
U1 IO19 - R5 P1
U1 3V3 - U3 VOUT
R6 P2 - J1 D-
U1 TXD - TP9 P1
J2 P1 - U2 VBAT
U1 3V3 - U3 VOUT
U1 IO4 - U4 SDA
U1 IO5 - U4 SCL
J1 VBUS - U2 VDD
U1 IO7 - J3 Pin_4
U1 IO0 - R10 P2
J2 P1 - U2 VBAT
J2 P1 - U2 VBAT
U1 IO3 - J3 Pin_6
U1 IO5 - U4 SCL
U1 EN - R8 P2
J1 CC1 - R3 P1
U3 EN - D1 K
R5 P2 - J1 D+
U1 3V3 - U3 VOUT
U1 3V3 - U3 VOUT
U1 IO4 - U4 SDA
U1 IO2 - J3 Pin_7
U1 EN - R8 P2
R6 P2 - J1 D-
U1 3V3 - U3 VOUT
U1 3V3 - U3 VOUT
SW1 ~ - U3 VIN
J1 CC1 - R3 P1
J1 VBUS - U2 VDD
R5 P2 - J1 D+
U3 EN - D1 K
U1 3V3 - U3 VOUT
U6 CPOUT - C16 P1
J2 P1 - U2 VBAT
J1 VBUS - U2 VDD
U1 EN - R8 P2
U6 REGOUT - C15 P1
GND
TP2
J1 Shield - J2 P2
TP6
GND
J1 Shield - J2 P2
GND
U7 2 - J4 1
TP10
J1 Shield - J2 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
GND
TP5
J1 Shield - J2 P2
U4 PGND - U5 VSS
J1 Shield - J2 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
U6 25 - C9 P2
U4 PGND - U5 VSS
TP4
TP3
C15 P2 - C16 P2
TP9
C15 P2 - C16 P2
J1 Shield - J2 P2
TP8
J1 Shield - J2 P2
J4 9 - J4 10
U4 PGND - U5 VSS
J1 Shield - J2 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
GND
GND
TP7
TP1
J1 Shield - J2 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
U6 25 - C9 P2
J1 Shield - J2 P2
J1 Shield - J2 P2
GND
R3
Resistance
5.1kΩ
R10
Resistance
100kΩ
SW1
C11
Capacitance
100nF
R12
Resistance
10kΩ
R6
Resistance
22Ω
C15
Capacitance
100nF
C13
Capacitance
100nF
C16
Capacitance
2.2nF
R9
Resistance
10kΩ
R2
Resistance
4.7kΩ
C3
Capacitance
1µF
C14
Capacitance
1µF
C2
Capacitance
10µF
R5
Resistance
22Ω
C4
Capacitance
4.7µF
C10
Capacitance
100nF
C1
Capacitance
10µF
R1
Resistance
4.7kΩ
R7
Resistance
2kΩ
C12
Capacitance
10µF
C7
Capacitance
4.7µF
R8
Resistance
10kΩ
R4
Resistance
5.1kΩ
C5
Capacitance
100nF
R11
Resistance
100kΩ
C9
Capacitance
100nF
C8
Capacitance
100nF
C6
Capacitance
100nF
U1
U6
U2
SW3
J2
U7
J1
SW2
D1
- Metadata
- Board Outline
- Drill Holes
- Top Layers
- Top Overlay
- Top Solder Paste
- Top Solder Mask
- Top Copper
- Mid-Layer 1
- Mid-Layer 2
- Bottom Copper
- Bottom Solder Mask
- Bottom Solder Paste
- Bottom Overlay
- Bottom Layers
- Metadata
- Board Outline
- Drill Holes
- Top Layers
- Top Overlay
- Top Solder Paste
- Top Solder Mask
- Top Copper
- Mid-Layer 1
- Mid-Layer 2
- Bottom Copper
- Bottom Solder Mask
- Bottom Solder Paste
- Bottom Overlay
- Bottom Layers
Reviews
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibraryjharwinbarrozo16.3k- A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibraryjharwinbarrozo1.5M
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliantjharwinbarrozo1.2M
- 10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlinkjharwinbarrozo700.5k
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
Production-grade ESP32-C3 smartwatch PCB with visible, wrist-contact, and outward-facing sensor orientation zones for JLCPCB 2-layer manufacturing.
Layout Rules
mm
Yes
10mm
Top
deg
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $17.30–$17.96 |
Digi-Key | $32.26–$41.16 |
HQonline | $4.20 |
LCSC | $94.73–$94.92 |
Mouser | $53.16 |
TME | $3.00 |
Verical | $11.63–$20.05 |
Controls
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