2 layers39.1 × 39.9 mm
Nebula
Thecactusman0/Nebula-openwatch
Nebula is a ESP32 based smartwatch that features a rotating bezel encoder
85 parts4
4 layers90 × 65 mm
Clock control board
lime7git/clockDigital clock based on ESP32 and WS281b leds.
- Size
- 90 × 65 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 241
- Nets
- 154
- Pads
- 641
- Tracks, vias
- 1,147, 303
- Pours
- 32
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 15 Feb 2023
- Updated
- 3 Jan 2025
Overview
Clock control board is an open-source printed circuit board by lime7git, from the lime7git/clock repository on GitHub. It is a 4-layer board of 90 × 65 mm with 241 parts on 154 nets, routed with 1,147 tracks and 303 vias.
It is built around the ESP32-S3-WROOM-1-N8R8, LTR-303ALS-01 and MAX98357AETE+T, with the AMS1117-3.3 and M24C64-RMN6TP among its other parts. Its parts include 106 resistors, 36 capacitors, 9 connectors, 7 diodes and 6 ICs. It belongs with the lEDs and displays boards and the ESP32 boards of this library.
Main components
5
ESP32-S3-WROOM-1-N8R8
SMD,25.5x18mm-104.5dBm -40℃~+65℃ 2.4GHz 20.5dBm 330mA 3V~3.6V 97mA Bluetooth5.0 ESP32-S3R8 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
LTR-303ALS-01
DFN-6(2x2)-30℃~+70℃ 0.7mm 16bit 2.4V~3.6V 2mm 2mm 64klx I2C Light Intensity Low power/sleep mode、Spectral correction/filtering、Adjustable gain control、Interrupt/event trigger、Built-in temperature compensation DFN-6(2x2) Ambient Light Sensors ROHSLite-OnAmbient Light Sensors
MAX98357AETE+T
TQFN-16-EP(3x3)-40℃~+85℃ 2.4mA 2.5V~5.5V 3.2Wx1@4Ω 77dB 92% Automatic mute/no-noise switch、Enable/shutdown function、Filterless architecture Class D TQFN-16-EP(3x3) Audio Amplifiers ROHSMaxim Integrated (Analog Devices)Audio Amplifiers
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
M24C64-RMN6TP
SOIC-8-40℃~+85℃ 1.8V~5.5V 1MHz 2.5mA 200 Years 3uA 4,000,000 Cycles 5ms 64Kbit Hardware write protection function、Built-in power-on reset (POR)、Built-in error correction code (ECC) function I2C SOIC-8 EEPROM ROHSSTMicroelectronicsEEPROM
README
README.mdclock
Digital clock based on ESP32 and WS281b leds.
Parts
241| Qty | Value | Footprint | References |
|---|---|---|---|
| 59 | 0 Ohm | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R10, R11, R12, R13, R14, R16, R17, R18, R22, R23, R24, R25, R102, R103, R104, R106 +43 |
| 23 | DNM | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R15, R33, R45, R46, R50, R52, R55, R59, R60, R61, R62, R63, R64, R65, R66, R73 +7 |
| 15 | 100nF | Capacitor_SMD:C_0402_1005Metric | C6, C8, C12, C13, C15, C19, C20, C22, C24, C26, C29, C32, C33, C34, C35 |
| 14 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R4, R5, R19, R37, R38, R42, R44, R51, R70, R72, R83, R98, R101 |
| 8 | MountingHole | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1, H2, H3, H4, H5, H6, H7, H8 |
| 7 | 10uF | Capacitor_SMD:C_0603_1608Metric | C5, C7, C14, C21, C25, C30, C31 |
| 6 | 22pF | Capacitor_SMD:C_0402_1005Metric | C9, C10, C17, C18, C27, C28 |
| 5 | NMOS | Package_TO_SOT_SMD:SOT-23 | Q2, Q3, Q4, Q5, Q6 |
| 5 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1, JP2, JP3, JP6, JP7 |
| 4 | 1u | Capacitor_SMD:C_0402_1005Metric | C1, C2, C11, C23 |
| 3 | 10u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C3, C4, C36 |
| 3 | 5.1k | Resistor_SMD:R_0402_1005Metric | R20, R21, R99 |
| 3 | TestPoint | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP1, TP2, TP3 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R3, R105 |
| 2 | 2k | Resistor_SMD:R_0402_1005Metric | R2, R100 |
| 2 | 32.768kHz | Crystal:Crystal_SMD_MicroCrystal_CC7V-T1A-2Pin_3.2x1.5mm | Y1, Y2 |
| 2 | Conn_01x04 | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J7, J12 |
| 2 | D_Small | Diode_SMD:D_SOD-123 | D6, D7 |
| 2 | D_TVS | Diode_SMD:D_SOD-323 | D2, D5 |
| 2 | FerriteBead_Small | Inductor_SMD:L_0805_2012Metric | FB1, FB2 |
| 2 | LED | LED_SMD:LED_0805_2012Metric | D3, D4 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_TL3342 | SW1, SW2 |
| 1 | |||
| 1 | 100ohm | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 1F | Capacitor_THT:CP_Radial_D12.5mm_P5.00mm | C16 |
| 1 | 22 | Resistor_SMD:R_0402_1005Metric | R31 |
| 1 | 220 | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 680k 1% | Resistor_SMD:R_0805_2012Metric | R57 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3002_1x2032 | BT1 |
| 1 | CM1624 | mylib:FIL_CM1624 | FL1 |
| 1 | Conn_01x02 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J10 |
| 1 | Conn_01x03 | Connector_JST:JST_XH_S3B-XH-A-1_1x03_P2.50mm_Horizontal | J3 |
| 1 | Conn_01x05 | Connector_JST:JST_XH_S5B-XH-A-1_1x05_P2.50mm_Horizontal | J9 |
| 1 | Conn_01x05 | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J8 |
| 1 | Conn_01x08 | Connector_JST:JST_XH_S8B-XH-A-1_1x08_P2.50mm_Horizontal | J4 |
| 1 | ESP32-S3-WROOM-1-N8R8 | mylib:ESP32-S3-WROOM-1 | U2 |
| 1 | Fuse | Fuse:Fuse_0402_1005Metric_Pad0.77x0.64mm_HandSolder | F1 |
| 1 | G*** | kibuzzard-6456A7AC | kibuzzard-6456A7AC |
| 1 | G*** | kibuzzard-6457FD19 | kibuzzard-6457FD19 |
| 1 | G*** | kibuzzard-6456A7D3 | kibuzzard-6456A7D3 |
| 1 | G*** | kibuzzard-6458032B | kibuzzard-6458032B |
| 1 | G*** | kibuzzard-645BF6F0 | kibuzzard-645BF6F0 |
| 1 | G*** | kibuzzard-6458032F | kibuzzard-6458032F |
| 1 | G*** | kibuzzard-645802C2 | kibuzzard-645802C2 |
| 1 | G*** | kibuzzard-6456A7C9 | kibuzzard-6456A7C9 |
| 1 | G*** | kibuzzard-6456A84C | kibuzzard-6456A84C |
| 1 | G*** | kibuzzard-645AB1F5 | kibuzzard-645AB1F5 |
| 1 | G*** | kibuzzard-6457FC89 | kibuzzard-6457FC89 |
| 1 | G*** | kibuzzard-64580048 | kibuzzard-64580048 |
| 1 | G*** | kibuzzard-646936FC | kibuzzard-646936FC |
| 1 | G*** | kibuzzard-6452C2AB | kibuzzard-6452C2AB |
| 1 | G*** | kibuzzard-6457FD25 | kibuzzard-6457FD25 |
| 1 | G*** | kibuzzard-6458030B | kibuzzard-6458030B |
| 1 | G*** | kibuzzard-64580326 | kibuzzard-64580326 |
| 1 | G*** | kibuzzard-645AB20B | kibuzzard-645AB20B |
| 1 | G*** | kibuzzard-6456C8A6 | kibuzzard-6456C8A6 |
| 1 | G*** | kibuzzard-6458017F | kibuzzard-6458017F |
| 1 | G*** | kibuzzard-645FAD74 | kibuzzard-645FAD74 |
| 1 | G*** | kibuzzard-6457FD6A | kibuzzard-6457FD6A |
| 1 | G*** | kibuzzard-6452C3EF | kibuzzard-6452C3EF |
| 1 | G*** | kibuzzard-6457943A | kibuzzard-6457943A |
| 1 | G*** | kibuzzard-6457FFC6 | kibuzzard-6457FFC6 |
| 1 | G*** | kibuzzard-6457FFFD | kibuzzard-6457FFFD |
| 1 | G*** | kibuzzard-6457FC92 | kibuzzard-6457FC92 |
| 1 | G*** | kibuzzard-6456A845 | kibuzzard-6456A845 |
| 1 | G*** | kibuzzard-6457FDB2 | kibuzzard-6457FDB2 |
| 1 | G*** | kibuzzard-645AB211 | kibuzzard-645AB211 |
| 1 | G*** | kibuzzard-645BF703 | kibuzzard-645BF703 |
| 1 | G*** | kibuzzard-645795A5 | kibuzzard-645795A5 |
| 1 | G*** | kibuzzard-645BF6FA | kibuzzard-645BF6FA |
| 1 | G*** | kibuzzard-64580318 | kibuzzard-64580318 |
| 1 | G*** | kibuzzard-6456A7BB | kibuzzard-6456A7BB |
| 1 | HDC1080 | Package_SON:Texas_PWSON-N6 | U6 |
| 1 | JTAG | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J11 |
| 1 | Jack-DC | mylib:PC-GK21 | J1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | LTR-303ALS-01 | OptoDevice:Lite-On_LTR-303ALS-01 | U8 |
| 1 | M24C64-RMN6TP | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | MAX98357AETE+T | mylib:QFN50P300X300X80-17N | U7 |
The 231 most common of 241 parts.
Questions
How big is the Clock control board PCB?
It measures 90 × 65 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Clock control board use?
241 parts, built around the ESP32-S3-WROOM-1-N8R8, LTR-303ALS-01, MAX98357AETE+T and AMS1117-3.3. 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.
Where can I download the Clock control board KiCad files?
From the lime7git/clock repository on GitHub, at the commit this page was made from: the board is hardware/clock/clock-control-board/clock-control-board.kicad_pcb and its schematic hardware/clock/clock-control-board/clock-control-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock control board design in my own project?
Its repository states no licence, so its author keeps all rights: ask lime7git before reusing the design.
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