4 layers140 × 54 mm
Picoclock
locked/picoclock
This repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
146 parts
2 layers175.8 × 64 mm
Picoclock
locked/picoclockThis repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
- Size
- 175.8 × 64 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 90
- Nets
- 126
- Pads
- 431
- Tracks, vias
- 605, 112
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 Jun 2024
- Updated
- 15 Aug 2026
Overview
Picoclock is an open-source printed circuit board by locked, from the locked/picoclock repository on GitHub. It is a 2-layer board of 175.8 × 64 mm with 90 parts on 126 nets, routed with 605 tracks and 112 vias.
It is built around the PCF8563T/5, PCM5100PW and MBR0530, with the BSS138 among its other parts. Its parts include 28 capacitors, 18 resistors, 14 connectors, 7 ICs and 6 switches. It belongs with the RP2040 boards of this library.
Main components
4
PCF8563T/5
SO-8-40℃~+85℃ 0.25uA 1V~5.5V Battery low-voltage detection、Programmable clock output、Alarm function、Countdown timer I2C Yes SO-8 Real Time Clocks ROHSNXP SemiconductorsReal Time Clocks
PCM5100PW
TSSOP-20-25℃~+85℃ 2 3.3V~3.6V Digital filtering、Power-down mode I2S TSSOP-20 ADCs/DACs - Special Purpose ROHSTexas InstrumentsADCs/DACs - Special Purpose
MBR0530
SOD-1231 Independent 30V 5.5A 500mA 550mV@500mA 80uA@30V SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
README
README.mdRP2040 based Alarm Clock
Presentation
This repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
- date/time (obviously)
- alarm (plays wav file on sdcard)
- weather (current and forecast)
- epaper screen
- 3d printable case
The configuration is done remotely, and the clock synchronize from time to time (it can be forced too). The time is also fetched from a remote server.
Repository Architecture
- 3d: contains printable models for the case, buttons
- fw: the firmware, based on a lightweight "rtos"
- pcb: the PCBs:
- the main PCB receiving the RP2040 board
- the front PCB with the backlight leds
- api: remote api basic php script
Pictures
Build
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Debug ..
makeParts
90| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R3, R8, R9, R10, R11, R12, R13, R16, R17, R21 |
| 6 | 1uF/25V | Capacitor_SMD:C_0603_1608Metric | C21, C24, C25, C26, C27, C28 |
| 6 | SW_Push | clock:SW_SPST_TL3301TG | SW1, SW2, SW3, SW4, SW5, SW6 |
| 5 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C9, C12 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | xx | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J3, J4, J7, J8 |
| 3 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C18, C19, C20 |
| 3 | MBR0530 | Diode_SMD:D_SOD-123 | D2, D3, D4 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C17 |
| 2 | 1uF/10V | Capacitor_SMD:C_0603_1608Metric | C22, C23 |
| 2 | 2.2nF | Capacitor_SMD:C_0603_1608Metric | C10, C11 |
| 2 | 220pF | Capacitor_SMD:C_0603_1608Metric | C29, C30 |
| 2 | 470 | Resistor_SMD:R_0603_1608Metric | R2, R4 |
| 2 | 5.1K | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | FerriteBead | Inductor_SMD:L_0603_1608Metric | FB1, FB2 |
| 2 | SJB | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1, JP2 |
| 1 | 0.47 | Resistor_SMD:R_0603_1608Metric | R22 |
| 1 | 1.5K | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C15 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 10uH | Inductor_SMD:L_TDK_NLV32_3.2x2.5mm | L1 |
| 1 | 1A 20V Schottky | Diode_SMD:D_SOD-123F | D1 |
| 1 | 1K | Resistor_SMD:R_0603_1608Metric | R19 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C8 |
| 1 | 22pF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 3V Cell | cell:MPD_BC501SM-TR | BT1 |
| 1 | AUDIO | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | Alt Power | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J11 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23-3 | Q3 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Conn_01x24 | Connector_FFC-FPC:Hirose_FH12-24S-0.5SH_1x24-1MP_P0.50mm_Horizontal | J15 |
| 1 | Crystal | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | LED_5V | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J12 |
| 1 | MCP23009-SO | Package_SO:SSOP-20_5.3x7.2mm_P0.65mm | U6 |
| 1 | MCP45X1-104E | Package_SO:MSOP-8_3x3mm_P0.65mm | U7 |
| 1 | MCP9808_MSOP | Package_SO:MSOP-8_3x3mm_P0.65mm | U3 |
| 1 | Micro_SD_Card_Det1 | clock:microSD_HC_Hirose_DM3AT-SF-PEJM5_combined_MSD-4-A | J5 |
| 1 | PAM8302A | Package_SO:SOP-8_3.76x4.96mm_P1.27mm | U5 |
| 1 | PCF8563T | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | PCM5100 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | Pico | clock:RPi_Pico_SMD_TH | U2 |
| 1 | UART | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | USB | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | USB_A | Connector_USB:USB_A_Connfly_DS1095 | J2 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J6 |
| 1 | USB_PICO | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J13 |
Questions
How big is the Picoclock PCB?
It measures 175.8 × 64 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Picoclock use?
90 parts, built around the PCF8563T/5, PCM5100PW, MBR0530 and BSS138. 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 Picoclock KiCad files?
From the locked/picoclock repository on GitHub, at the commit this page was made from: the board is pcb/picoclock.kicad_pcb and its schematic pcb-mini/CYW43439/4L/CYW43439.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Picoclock design in my own project?
Its repository states no licence, so its author keeps all rights: ask locked before reusing the design.
More from locked/picoclock
6- 2 layers175.8 × 64 mm
Picoclock
locked/picoclock
This repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
73 parts - 4 layers29.9 × 30.2 mm
CYW43439
locked/picoclock
This repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
37 parts - 2 layers29.9 × 30.2 mm
CYW43439
locked/picoclock
This repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
35 parts - 2 layers31.7 × 29.2 mm
Epaper driver
locked/picoclock
This repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
34 parts - 2 layers175.8 × 64 mm
Frontpanel
locked/picoclock
This repo is an attempt at building a Pico based alarm clock. It was created for my kids and features:
20 parts
Similar boards
- 4 layers95 × 55.5 mm
EinkPDA keyboard
TalismanDesign/PocketMage_PDA
An E-Ink PDA device using the ESP32 S3.
137 parts2kApache-2.0 - 4 layers70.2 × 71 mm
C3-27-epaper touch
martinberlin/bistable-smart-switch
An epaper switch project with 2 PCBs, controller+touch, and 220AC to 3DC with Relay (Latch or solid-state)
64 parts32Apache-2.0 - 4 layers50.3 × 33 mm
- 2 layers89 × 36 mm
- 4 layers110 × 54 mm
- 4 layers101.6 × 53.3 mm
- 2 layers100 × 100 mm
Zxuno1010
UzixLS/zxuno1010-board
10x10cm PCB variant of ZX-UNO project for G738/G706 enclosure
233 parts23MIT - 2 layers290 × 100 mm
ESP32-Wall Clock
SkullKill/ESP32-Wall-Clock-PCB
ESP32 based 30cm Wall Mounted Clock. WiFi, NTP, SNMP, web interface, MicroUsb, Type-C, HG3613 Retrofit
207 parts3GPL-3.0