TVavrinec/WatchWatch is an open-source printed circuit board by TVavrinec, from the TVavrinec/Watch repository on GitHub. It is a 4-layer board of 175.5 × 61.1 mm with 99 parts on 100 nets, routed with 655 tracks and 154 vias.
It is built around the ESP32-S3-MINI-1-N8, BQ25895RTW and LD39200PUR, with the SL8261D-G3JE, TPD4E02B04DQAR and WS2812B among its other parts. Its parts include 35 capacitors, 25 resistors, 13 diodes, 6 ICs and 6 transistors. It belongs with the wearables boards and the ESP32 boards of this library.
ESP32_S3_MINI watch with 12 LED circle, buzzer, one button and lunette. The watch is designed for a 1200mA Li-Ion battery and has complete battery management.
Fusion model: https://a360.co/3ve1P58
| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C6, C7, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22 |
| 13 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R5, R6, R7, R8, R9, R16, R17, R22, R25, R26 |
| 12 | WS2812B | RKL-LED:WS2812-1010 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 7 | 10u | Capacitor_SMD:C_0402_1005Metric | C1, C23, C29, C30, C31, C32, C33 |
| 7 | 1u | Capacitor_SMD:C_0402_1005Metric | C3, C4, C5, C8, C9, C24, C35 |
| 3 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C10, C26, C34 |
| 3 | Q_NMOS_DGS-L | Package_TO_SOT_SMD:SOT-23 | Q3, Q5, Q6 |
| 2 | 1000p | Capacitor_SMD:C_0201_0603Metric | C27, C28 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R13, R19 |
| 2 | 200k | Resistor_SMD:R_0402_1005Metric | R10, R15 |
| 2 | 2k | Resistor_SMD:R_0402_1005Metric | R14, R21 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R12, R24 |
| 2 | L | RKL-Inductors:PCB_coil_linear_N24 | L1, L2 |
| 2 | PMOS-2x_BSS84DW | RKL-StandardPackages:DFN3030 | Q2, Q7 |
| 2 | ~ | RKL-AuxiliarySymbols:Board | B1, B2 |
| 1 | 100 | Resistor_SMD:R_0402_1005Metric | R23 |
| 1 | 2.2u | Inductor_SMD:L_1008_2520Metric | L3 |
| 1 | 200 | Resistor_SMD:R_0402_1005Metric | R18 |
| 1 | 470 | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 47n | Capacitor_SMD:C_0201_0603Metric | C25 |
| 1 | 56k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | SW3 |
| 1 | BQ25895RTW | Package_DFN_QFN:Texas_S-PWQFN-N24_EP2.7x2.7mm_ThermalVias | U8 |
| 1 | Buzzer | RKL-Audio:SmallBuzzer | BZ1 |
| 1 | Conn_01x02 | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J2 |
| 1 | Conn_01x04 | RKL-Connectors:FFC-FPC_1x04_0.5mm_cable | J8 |
| 1 | Conn_01x04 | RKL-Connectors:FFC-FPC_1x04_0.5mm | J3 |
| 1 | EN | Button_Switch_SMD:SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | SW2 |
| 1 | ESP-Programing_conector | RKL-ESP:ESP-Programing_conector | J1 |
| 1 | ESP32-S3-MINI | RKL-ESP:ESP32-S3-MINI | U1 |
| 1 | LD39200 | Package_DFN_QFN:DFN-8-1EP_4x4mm_P0.8mm_EP2.3x3.24mm | U4 |
| 1 | LDC1x12 | Package_SON:WSON-12-1EP_4x4mm_P0.5mm_EP2.6x3mm | U3 |
| 1 | ON | Button_Switch_SMD:SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | SW4 |
| 1 | Q_PMOS_DGS-L | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SL8261D-G3JE | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | TPD4E02B04DQA | Package_SON:USON-10_2.5x1.0mm_P0.5mm | U9 |
| 1 | USB_C_Receptacle_USB2.0 | RKL-Connectors:USB-C_vertical | J7 |
| 1 | red | LED_SMD:LED_0603_1608Metric | D14 |
It measures 175.5 × 61.1 mm and has 4 copper layers, 1.6 mm thick.
99 parts, built around the ESP32-S3-MINI-1-N8, BQ25895RTW, LD39200PUR and SL8261D-G3JE. 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 TVavrinec/Watch repository on GitHub, at the commit this page was made from: the board is hw/Watch/Watch.kicad_pcb and its schematic hw/Watch/MainBoard.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 TVavrinec before reusing the design.
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