2 layers100 × 100 mm
2 layers90 × 142 mm
Bigtime
cillian64/bigtime4NTP-controlled clock with big 7-segment displays
- Size
- 90 × 142 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 124
- Nets
- 177
- Pads
- 566
- Tracks, vias
- 1,512, 105
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20170123)
- Created
- 20 Feb 2017
- Updated
- 30 Oct 2021
Overview
Bigtime is an open-source printed circuit board by cillian64, from the cillian64/bigtime repository on GitHub. It is a 2-layer board of 90 × 142 mm with 124 parts on 177 nets, routed with 1,512 tracks and 105 vias.
It is built around the STM32F407VET6, MAX17503ATP+ and NPIC6C596AD, with the TPS62152RGT, 25AA02E48-I/SN and LDL212DR among its other parts. Its parts include 46 capacitors, 31 resistors, 11 diodes, 9 ICs and 8 crystals. It belongs with the lEDs and displays boards and the STM32 boards of this library.
Main components
9
STM32F407VET6
LQFP-100(14x14)-40℃~+85℃ 1.8V~3.6V 12bit 12bit 168MHz 192KB 32 Bit 512KB 82 ARM Cortex-M4 Built-in FLASH LQFP-100(14x14) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
MAX17503ATP+
TQFN-20-EP(4x4)-40℃~+125℃ 1 100kHz~2.2MHz 4.5V~60V Buck Buck Built-in Yes TQFN-20-EP(4x4) DC-DC Converters ROHSMaxim Integrated (Analog Devices)DC-DC ConvertersNPIC6C596AD
-- Interface - Specialized ROHSNexperiaInterface - Specialized
TPS62152RGT
QFN-16-EP(3x3)-40℃~+85℃@(TA) 1 17uA 1A 2.5MHz 3.3V 3V~17V Buck Buck Built-in Fixed Yes TQFN-16-EP(3x3) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
25AA02E48-I/SN
SOIC-8-40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 10MHz 200 Years 2Kbit 5ms Hardware write protection function、Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROMLDL212DR
SOIC-8-40℃~+125℃@(Tj) 1 1.18V~17.4V 1.2A 18V 350mV@(1.2A) 380uA 50dB@(100kHz) 60uVrms Adjustable Over Current Protection、Enable Positive SOIC-8 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SS110B
SMB-55℃~+150℃ 1 Independent 100V 1A 200uA 40A 950mV@1A SMB Schottky Diodes ROHSGuangdong HottechSchottky DiodesRJHSE-538B
插件-55℃~+85℃ 1 Gold Phosphor bronze RJ45 Jack Right Angle Shielded With LED 插件 Ethernet Connectors / Modular Connectors (RJ45 RJ11) ROHSAmphenolEthernet Connectors / Modular Connectors (RJ45 RJ11)
SMAJ58A
DO-214AC(SMA)-55℃~+150℃ 1uA 4.3A@10/1000us 400W@10/1000us 58V 71.2V 93.6V IEC 61000-4-2 TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
README
README.mdbigtime
A rather large wall clock using big 7-segment displays, powered by 802.3af power-over-ethernet, and synchronised using NTP over wired ethernet. Configuration is done using an interactive USB shell and stored in flash.
One of these clocks is deployed in each of Lecture Theatres 1 and 2 at the Department of Computer Science and Technology (formerly known as the Computer Lab), University of Cambridge, UK.
Parts
124| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 100n | agg:0603 | C1, C5, C7, C10, C11, C12, C13, C14, C17, C18, C24, C26, C28, C33, C34, C46 +1 |
| 8 | 1500 | agg:0603 | R1, R4, R5, R6, R7, R8, R9, R10 |
| 8 | SS110B | agg:DO-214AA-SMB | D3, D4, D5, D6, D8, D9, D10, D11 |
| 6 | 33 | agg:0603 | R11, R12, R13, R14, R30, R31 |
| 5 | 2u2 | agg:0603 | C15, C16, C27, C41, C43 |
| 4 | 10n 200V | agg:0805 | C29, C30, C31, C32 |
| 4 | 75 | agg:0603 | R20, R21, R22, R23 |
| 4 | M3_HOLE | agg:M3_MOUNT | X1, X2, X3, X4 |
| 3 | 22u | agg:0603 | C4, C23, C25 |
| 2 | 10k | agg:0603 | R19, R29 |
| 2 | 10u | agg:0603 | C2, C35 |
| 2 | 15p | agg:0603 | C44, C45 |
| 2 | 1k | agg:0603 | R15, R16 |
| 2 | 1u | agg:0603 | C6, C22 |
| 2 | 2M | agg:0603 | R24, R27 |
| 2 | 30p | agg:0603 | C36, C37 |
| 2 | 4u7 | agg:0603 | C8, C21 |
| 2 | 6p | agg:0603 | C19, C20 |
| 1 | +12V | Connect:BARREL_JACK | P3 |
| 1 | +12V | agg:SIL-254P-01 | TP4 |
| 1 | +3.3V | agg:SIL-254P-01 | TP1 |
| 1 | +48V | agg:SIL-254P-01 | TP3 |
| 1 | 100k | footprints:3386P | RV1 |
| 1 | 100n 6.5V | agg:0603 | C39 |
| 1 | 100n 60V | agg:0805 | C40 |
| 1 | 110k | agg:0603 | R3 |
| 1 | 160k | agg:0603 | R28 |
| 1 | 1N4148 | agg:SOD-323 | D2 |
| 1 | 1n | agg:0603 | C42 |
| 1 | 22u | footprints:SRR1260A | L4 |
| 1 | 24k9 | agg:0603 | R25 |
| 1 | 25AA02E48 | agg:SOT-23-6 | IC3 |
| 1 | 25MHz | agg:XTAL-50x32 | Y2 |
| 1 | 26M | agg:XTAL-20x16 | Y1 |
| 1 | 2u2 | footprints:L2520 | L1 |
| 1 | 2u2 60V | agg:1210 | C38 |
| 1 | 3.3n | agg:0603 | C3 |
| 1 | 3.9V | agg:SOD-323 | D1 |
| 1 | 32.768k | footprints:XTAL_1206 | Y3 |
| 1 | 3u3 | footprints:ELLATP3R3NB | L3 |
| 1 | 48k | agg:0603 | R18 |
| 1 | 619 | agg:0603 | R26 |
| 1 | 6k49 | agg:0603 | R17 |
| 1 | 749010012A | agg:749010012A | T1 |
| 1 | 866k | agg:0603 | R2 |
| 1 | CONN_IN | Connect:IDC_Header_Straight_6pins | P1 |
| 1 | CONN_OUT | Connect:IDC_Header_Straight_6pins | P2 |
| 1 | FB | agg:0603 | L2 |
| 1 | GND | agg:SIL-254P-01 | TP6 |
| 1 | KSZ8081RNx | agg:QFN-24-EP-MICREL | IC5 |
| 1 | LDL212DR | agg:SOIC-8 | IC8 |
| 1 | MAX17503 | agg:QFN-20-EP-MAX | IC7 |
| 1 | MAX5969x | agg:DFN-10-EP-MAX | IC6 |
| 1 | MICROUSB | agg:MICROUSB_MOLEX_47589-0001 | J2 |
| 1 | NPIC6C596A | agg:TSSOP-16 | IC1 |
| 1 | PART | Symbols:Polarity_Center_Positive_6mm_SilkScreen | X5 |
| 1 | POE_GOOD | agg:SIL-254P-01 | TP5 |
| 1 | RESET | agg:SIL-254P-01 | TP2 |
| 1 | RJHSE-538B | footprints:RJHSE538X | J1 |
| 1 | SA40-19SURKWA | footprints:SA40-18 | U1 |
| 1 | SMAJ58A | agg:DO-214AC-SMA | D7 |
| 1 | STM32F407VET6 | agg:LQFP-100 | IC4 |
| 1 | SWD | agg:FTSH-105-01-F-D-K | P5 |
| 1 | SWD_TC | agg:TC2030-NL | P4 |
| 1 | TPS62152 | agg:QFN-16-EP-TI | IC2 |
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Questions
How big is the Bigtime PCB?
It measures 90 × 142 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bigtime use?
124 parts, built around the STM32F407VET6, MAX17503ATP+, NPIC6C596AD and TPS62152RGT. 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 Bigtime KiCad files?
From the cillian64/bigtime repository on GitHub, at the commit this page was made from: the board is board/bigtime.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bigtime design in my own project?
Its repository states no licence, so its author keeps all rights: ask cillian64 before reusing the design.