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4 layers100 × 100 mm10k Hour Timer RP2040, the printed circuit board in 3D

10k Hour Timer RP2040

smaroukis/rp2040-timer

An Eval Board for an RP2040 mcu + seven segment LED display + TM1638 driver + peripherals.

Open in PCBKitView on GitHub.kicad_pcb
Size
100 × 100 mm
Copper layers
4
Thickness
1.6 mm
Parts
180
Nets
135
Pads
529
Tracks, vias
1,705, 504
Pours
9
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
6 Jul 2025
Updated
22 Mar 2026

Overview

10k Hour Timer RP2040 is an open-source printed circuit board by smaroukis, from the smaroukis/rp2040-timer repository on GitHub. It is a 4-layer board of 100 × 100 mm with 180 parts on 135 nets, routed with 1,705 tracks and 504 vias.

It is built around the SC0914(13), FJ2481CH and MCP73831T-2ACI/OT-HXY, with the PCF8523T, AO3400A and CL31A107MQHNNNE among its other parts. Its parts include 49 resistors, 28 capacitors, 10 connectors, 9 diodes and 8 transistors. It belongs with the RP2040 boards of this library.

Main components

12

README

README.md

10k-Hour-Timer-RP2040

An Eval Board for an RP2040 mcu + seven segment LED display + TM1638 driver + peripherals.

Project Structure

  • kicad/ - KiCad schematic and PCB design files
  • firmware/ - Firmware source code
  • datasheets/ - Component datasheets and documentation

Hardware

This project uses the RP2040 microcontroller with supporting circuitry for power management, display drivers, and user interface components. Note the firmware can be tested using a Raspberry Pi Pico board (original/v1 not Pico 2).

Getting Started

TODO - will post build log in the future.

License

MIT License with other license files attached as used.

Hardware Revisions

2026-03-22 v1

Tagged commit:

Thanks to PCBWay for providing a partial discount which I put towards two pre-assemblied. Note that resistors R20 and R22 were populated with 220Ohms instead of 200Ohms as specified in the BOM. However these are just MOFSET gate protection resistors.

Parts

180
QtyValueFootprintReferences
1710KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR4, R19, R21, R24, R25, R28, R34, R35, R36, R39, R40, R44, R45, R46, R47, R48 +1
11100nCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC2, C13, C15, C16, C18, C19, C21, C22, C24, C26, C28
11SolderJumper_2_BridgedJumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mmJP2, JP4, JP7, JP9, JP11, JP13, JP16, JP17, JP18, JP19, JP20
10SolderJumper_2_OpenJumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mmJP1, JP3, JP5, JP6, JP10, JP12, JP21, JP22, JP23, JP24
71KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR3, R14, R23, R26, R32, R38, R41
6AO3400APackage_TO_SOT_SMD:SOT-23Q2, Q3, Q4, Q5, Q7, Q8
42KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR5, R7, R8, R18
44.7uCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC3, C4, C6, C25
4MH-4.7mmproject footprints:MountingHole_4.7mmH1, H2, H3, H4
31uCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC14, C17, C20
3Conn_01x03_PinConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ1, J7, J8
2100Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR30, R31
2100KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR15, R43
2100uCapacitor_SMD:C_1206_3216MetricC23, C27
215pCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC10, C11
2200Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR20, R22
227Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR27, R29
2470Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR37, R42
25.1KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR1, R2
25.1MResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR12, R13
2BAT-project footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP9, TP15
2Conn_01x02_PinConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ9, J11
2FJ2481CHproject footprints:7-Seg-CC28-FJ2481CHU8, U9
2GNDproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP1, TP13
2PMOSPackage_TO_SOT_SMD:SOT-23Q1, Q6
2S2B-PH-K-S_LF__SN_Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_HorizontalJ4, J10
10Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR9
10.1uCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC5
11Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR33
110nCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC1
12.2KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR11
12.2uCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC12
12.2uHproject footprints:IND_SDER041H-2R2MSL1
1200KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR16
122uCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC8
1330Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR10
13KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR6
13V3LED_SMD:LED_0805_2012MetricD8
144.2KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR17
1470nCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC7
15VLED_SMD:LED_0805_2012MetricD2
16.8pCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC9
1ABM8-272-T3project footprints:XTAL_ABM8-272-T3Y1
1ABS07AIG-32.768KHZ-7-TCrystal:Crystal_SMD_3215-2Pin_3.2x1.5mmY2
1ADC0project footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP23
1ADC1project footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP20
1BAT+project footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP8
1BAT54CPackage_TO_SOT_SMD:SOT-23D7
1BATTLED_SMD:LED_0805_2012MetricD1
1BLM18SP221SN1Dproject footprints:BLM18SP221SN1D_BEADC1608X95NFB1
1BOOTSELButton_Switch_THT:SW_PUSH_6mmSW2
1BQ29700DSERPackage_SON:WSON-6_1.5x1.5mm_P0.5mmU3
1BTN_Bproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP21
1BTN_B_INproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP22
1Battery_Cellproject footprints:Battery-Holder-BH-123A_37.5P_1.8D_MHBT1
1Buzzer D=9mm P=5mmproject footprints:Buzzer-TH_D9.6_P5BZ1
1CHGproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP12
1Conn_02x05_Counter_ClockwiseConnector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_VerticalJ5
1Conn_02x08_Counter_ClockwiseConnector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_VerticalJ6
1DCDC_ENproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP19
1DC_SWproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP17
1DSGproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP11
1EN_CTLproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP16
1FBproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP27
1GRN/DONELED_SMD:LED_0805_2012MetricD5
1INT_Dproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP25
1INT_Gproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP24
1IOGateproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP18
1JST_SH_SM03Bproject footprints:JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_HorizontalJ2
1LOADproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP26
1MCP73831-2-OTPackage_TO_SOT_SMD:SOT-23-5U2
1PCF8523TPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU7
1PKMCS0909E4000project footprints:Buzzer_SPKR_PKMCS0909E4000-R1BZ2
1Q23_Dproject footprints:TestPoint_THTPad_D2.0mm_Drill1.0mmTP14
1RED/CHGLED_SMD:LED_0805_2012MetricD6
1RED/INTLED_SMD:LED_0805_2012MetricD10
1RED/USERLED_SMD:LED_0805_2012MetricD9
1RESETButton_Switch_THT:SW_PUSH_6mmSW3
1RP2040Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mmU6
1SOD-323Diode_SMD:D_SOD-323_HandSolderingD3

The 164 most common of 180 parts.

Questions

How big is the 10k Hour Timer RP2040 PCB?

It measures 100 × 100 mm and has 4 copper layers, 1.6 mm thick.

What parts does the 10k Hour Timer RP2040 use?

180 parts, built around the SC0914(13), FJ2481CH, MCP73831T-2ACI/OT-HXY and PCF8523T. 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 10k Hour Timer RP2040 KiCad files?

From the smaroukis/rp2040-timer repository on GitHub, at the commit this page was made from: the board is kicad/10k-Hour-Timer-RP2040.kicad_pcb and its schematic kicad/01-04-Power-DCDC-Charger-Battery.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the 10k Hour Timer RP2040 design in my own project?

Its repository states no licence, so its author keeps all rights: ask smaroukis before reusing the design.

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