TimeCapsule

jaxfry·TimeCapsule·TimeCapsulePCB/TimeCapsule.kicad_pcb

About the TimeCapsule PCB

TimeCapsule is an open source RP2040/RP2350 PCB design by jaxfry, published on GitHub. It is a 2-layer board measuring 50 × 70 mm, with 51 components from 29 distinct parts.

Its main chip is the SC0914(13), from the RP2040/RP2350 family. Other key parts include the TPL5110QDDCRQ1, AP2112K-3.3TRG1, RV-3028-C7 32.768KHZ 1PPM-TA-QC, W25Q128JVSIQ TR and SN74LVC1G32DBVR. By type, the board carries 18 capacitors, 16 resistors, 6 ICs, 4 transistors, 2 switches and 2 diodes.

From the project

A usb time capsule!

Time Capsule USB is a custom PCB using the RP2040 microcontroller that functions as a sort of time capsule. It alows you upload files to it, which can only be accessed after a certain date that you set. Due to the limits of battery life, it's not meant to be used for long-term storage, but it should last about 7 years and then about 1 year of the LED blinking to indicate that the time has come to access the files. The main limit is that CR2032 batteries only last about 10 years and naturally discharge over time.

TimeCapsule, from the project README — From the project README

Main components on the TimeCapsule

SC0914(13)TPL5110QDDCRQ1 AP2112K-3.3TRG1 RV-3028-C7 32.768KHZ 1PPM-TA-QC W25Q128JVSIQ TR SN74LVC1G32DBVR

TimeCapsule bill of materials (BOM)

51 components, 29 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	SC0914(13) RP2040 Raspberry Pi	QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm	U1
1	TPL5110QDDCRQ1 TPL5110 Texas Instruments	SOT-23-6	U2
1	AP2112K-3.3TRG1 AP2112K-3.3 Diodes Incorporated	SOT-23-5	U3
1	RV-3028-C7 32.768KHZ 1PPM-TA-QC RV-3028-C7 Micro Crystal AG	MicroCrystal_C7_SON-8_1.5x3.2mm_P0.9mm	U4
1	W25Q128JVSIQ TR W25Q128JVS Winbond Electronics	SOIC-8_5.3x5.3mm_P1.27mm	U5
1	SN74LVC1G32DBVR 74LVC1G32 Texas Instruments	SOT-23-5	U6
1	DMP2305U-7 Q_PMOS_GSD Diodes Incorporated	SOT-23	Q1
3	2N7002 Q_NMOS_GSD Diotec Semiconductor	SOT-23	Q2, Q3, Q4
1	ABM8-272-T3 ABRACON	Crystal_SMD_3225-4Pin_3.2x2.5mm	Y1
1	USB4105-GF-A USB_C_Receptacle_USB2.0_14P GCT	USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal	J1
1	106 Battery_Cell Keystone Electronics	BatteryHolder_Keystone_106_1x20mm	BT1
2	B3F-1020 SW_Push Omron Electronics Inc-EMC Div	SW_PUSH_6mm	SW1, SW2
1	LS R976-NR-1-0-20-R18 LED ams-OSRAM USA INC.	LED_0805_2012Metric	D1
1	1N4148WL2-TP 1N4148 MCC (Micro Commercial Components)	D_DO-35_SOD27_P7.62mm_Horizontal	D2
3	C1005X5R1E105K050EC 1u TDK Corporation	C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C1, C9, C13
10	CL05B104KP5VPNC 100n Samsung Electro-Mechanics	C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C2, C3, C4, C5, C6, C7, C8, C10 +2
2	CL05A475MP5NRNC 4.7uF Samsung Electro-Mechanics	C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C12, C18
2	GJM1555C1H150GB01D 15p Murata Electronics	C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C15, C16
1	CL05B104KP5NNNC 0.1u Samsung Electro-Mechanics	C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C17
2	RC0402FR-075K1L 5.1k YAGEO	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R1, R2

Show 9 more

Qty	Part	Footprint	Refs
2	RC0402FR-0727R4L 27.4 Stackpole Electronics Inc	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R3, R4
1	DNF	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R5
2	RMCF0402FT1K00 1k Stackpole Electronics Inc	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R6, R7
2	RC0402FR-074K7L 4.7k YAGEO	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R8, R9
1	CRGCQ0402F1M0 1M TE Connectivity Passive Product	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R10
1	RC0402FR-0716K9L 16.9k Panasonic Electronic Components	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R11
3	RC1005F103CS 10k Samsung Electro-Mechanics	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R12, R14, R16
1	RMCF0402FT150R 150 Stackpole Electronics Inc	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R13
1	CRCW0402100KFKED 100k Vishay Dale	R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R15

TimeCapsule design files

The KiCad project lives in the jaxfry/TimeCapsule repository on GitHub; these links point at the commit this page was built from.

LayoutTimeCapsulePCB/TimeCapsule.kicad_pcb
SchematicTimeCapsulePCB/TimeCapsule.kicad_sch
BOMBOM.csv

TimeCapsule: common questions

What microcontroller does the TimeCapsule use?

The TimeCapsule is built around the SC0914(13), from the RP2040/RP2350 family.

How big is the TimeCapsule PCB?

The TimeCapsule measures 50 × 70 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TimeCapsule?

51 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the TimeCapsule design files?

From the jaxfry/TimeCapsule repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the TimeCapsule design in my own project?

The repository has no license, so all rights stay with jaxfry. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the TimeCapsule without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.