4 layers100 × 100 mm
LED Panel Controller
drewsum/LED_Panel_Controller
Controls a single 64x64 HUB75E LED Panel
590 parts2GPL-3.0
4 layers80 × 45 mm
Stopwatch
drewsum/StopwatchHardware stopwatch for developing film
- Size
- 80 × 45 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 194
- Nets
- 219
- Pads
- 775
- Tracks, vias
- 1,816, 303
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 Dec 2023
- Updated
- 9 Nov 2024
Overview
Stopwatch is an open-source printed circuit board by drewsum, from the drewsum/Stopwatch repository on GitHub. It is a 4-layer board of 80 × 45 mm with 194 parts on 219 nets, routed with 1,816 tracks and 303 vias.
It is built around the TPS62130ARGT, 74LVC1G97GV and HDSP-7503, with the 74LVC1G80GW, CD4024BF and CD4040BM among its other parts. Its parts include 63 resistors, 54 capacitors, 44 ICs, 9 diodes and 3 switches.
Main components
11
TPS62130ARGT
QFN163V-17V 3A Step-Down Converter In 3x3 QFN PackageTexas InstrumentsUncategorised
74LVC1G97GV
SOT-23-6L-40℃~+125℃ 1 1.65V~5.5V Configurable Multi-Function Gate SOT-23-6L Specialty Logic ROHSMDDSpecialty Logic
HDSP-7503
DIP-10-40℃~+100℃ 0.3 1 105mW 2V 5.39mcd 7 Segment Common Cathode Red DIP-10 LED Segment Displays ROHSBroadcom LimitedLED Segment Displays
74LVC1G80GW
SOT-353-5-40℃~+125℃ 1 1.1ns 1.65V~5.5V 1.8ns@5V,50pF 100nA 200MHz 24mA 24mA 500ps 5pF 74LVC Series D-Type Rising Edge SOT-353-5 Flip Flops ROHSNexperiaFlip Flops
CD4024BF
CDIP(J)-14CDIP(J)-14 Counters, Dividers ROHSTexas InstrumentsCounters, Dividers
CD4040BM
SOIC-16-55℃~+125℃ 1 12 12MHz 3V~18V 500mW 65ns Asynchronous CD4000 Divide-by-2 Falling Edge Reset function Up Counter SOIC-16 Counters, Dividers ROHSTexas InstrumentsCounters, Dividers
TPS26600RHFT
VQFN-24-EP(4x5)VQFN-24-EP(4x5) Surge Protection Devices (SPDs) ROHSTexas InstrumentsSurge Protection Devices (SPDs)
BAT48JFILM
SOD-32325uA@40V 350mA 40V 900mV@500mA Independent SOD-323 Schottky Diodes ROHSSTMicroelectronicsSchottky Diodes
BSS214NW-TP
SOT-323MOSFETsTECH PUBLIC
ECS-327KE-TR
SMD3225-4P-40℃~+85℃ 1.5V~5.5V 1.5uA 32.768kHz CMOS SMD3225-4P Crystal Oscillators ROHSECSCrystal Oscillators
ZXMS6004FFTA
SOT-23F-40℃~+150℃ 1 1.3A 350mΩ 60V Low Side Switch Short-Circuit Protection(SCP)、Over Voltage Protection、Overcurrent Protection(OCP)、Over Temperature Protection SOT-23F Power Distribution Switches ROHSDiodes IncorporatedPower Distribution Switches
README
README.mdStopwatch
Hardware stopwatch, no code or microcontroller.
"Display Enable" pushbutton toggles the seven segment LED display on and off "Count Reset" pushbutton resets the counted time back to 00:00:00 "Count Enable" pushbutton starts and stops the stopwatch
Parts
194| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | 10k | Resistors_SMD:R_0402 | R1001, R1101, R1201, R1301, R1302, R1303, R1304, R1305, R1306, R1307, R1401, R1402, R1403, R1404, R1405, R1406 +26 |
| 39 | 0.1uF | Capacitors_SMD:C_0402 | C1001, C1101, C1201, C1301, C1302, C1303, C1304, C1305, C1306, C1307, C1401, C1402, C1403, C1404, C1405, C1406 +23 |
| 23 | 74LVC1G97 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U401, U501, U1301, U1302, U1303, U1304, U1305, U1306, U1307, U1401, U1402, U1403, U1404, U1405, U1406, U1407 +7 |
| 13 | 1k | Resistors_SMD:R_0402 | R501, R502, R503, R504, R505, R506, R507, R601, R602, R603, R604, R605, R606 |
| 6 | 10nF | Capacitors_SMD:C_0402 | C201, C303, C402, C601, C602, C603 |
| 6 | 1k | Resistor_SMD:R_Cat16-8 | RN701, RN801, RN901, RN1001, RN1101, RN1201 |
| 6 | 4026 | Housings_SSOP:TSSOP-16_4.4x5mm_Pitch0.65mm | U701, U801, U901, U1001, U1101, U1201 |
| 6 | HDSP-7503 | Display_7Segment:HDSP-A151 | U702, U802, U902, U1002, U1102, U1202 |
| 4 | 10uF | Capacitors_SMD:C_0402 | C302, C607, C608, C609 |
| 4 | 3mm | MountingHole:MountingHole_3mm | H1501, H1502, H1503, H1504 |
| 4 | Red | LEDs:LED_0402 | D502, D503, D506, D507 |
| 3 | 10uF | Capacitors_SMD:C_1206 | C301, C305, C306 |
| 3 | AT42QT1010-TSHR | TO_SOT_Packages_SMD:SOT-23-6 | U601, U602, U603 |
| 3 | Cap_Touch | Custom Footprints Library:Capacitive_Touch_Pad | SW601, SW602, SW603 |
| 3 | Green | LEDs:LED_0402 | D501, D504, D505 |
| 2 | 5.11k | Resistors_SMD:R_0402 | R203, R207 |
| 2 | 74LVC1G80 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U607, U608 |
| 2 | TP_Pad | Custom Footprints Library:Test_Point | TP202, TP203 |
| 1 | +12V IN | Connectors:BARREL_JACK | J201 |
| 1 | 1.15k | Resistors_SMD:R_0402 | R202 |
| 1 | 10 | Resistors_SMD:R_0402 | R301 |
| 1 | 100uF | Capacitor_Tantalum_SMD:CP_EIA-7343-43_Kemet-X | C203 |
| 1 | 13k | Resistors_SMD:R_0402 | R206 |
| 1 | 180k | Resistors_SMD:R_0402 | R305 |
| 1 | 1nF | Capacitors_SMD:C_0402 | C403 |
| 1 | 2.2u | Inductors_SMD:L_Vishay_IHLP-2020 | L301 |
| 1 | 24V | Diodes_SMD:D_SMA | D201 |
| 1 | 51.1k | Resistors_SMD:R_0402 | R201 |
| 1 | 562k | Resistors_SMD:R_0402 | R304 |
| 1 | BAT48JFILM | Diode_SMD:D_SOD-323 | D301 |
| 1 | BSS214NW | Package_TO_SOT_SMD:SOT-323_SC-70 | Q301 |
| 1 | CD4024 | Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm | U402 |
| 1 | CD4040 | Custom Footprints Library:DHVQFN16-1ep_3p5x2p5mm | U403 |
| 1 | ECS-327KE | Oscillator:Oscillator_SMD_Abracon_ASE-4Pin_3.2x2.5mm | X401 |
| 1 | Owl_1_Logo | Custom Footprints Library:Owl_1_Logo | G*** |
| 1 | TP | Custom Footprints Library:Test_Point | TP301 |
| 1 | TP | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Horizontal | TP201 |
| 1 | TPS26600RHFT | Housings_DFN_QFN:QFN-24-1EP_4x5mm_Pitch0.5mm | U201 |
| 1 | TPS62130A | Housings_DFN_QFN:QFN-16-1EP_3x3mm_Pitch0.5mm | U301 |
| 1 | ZXMS6004FFTA | Package_TO_SOT_SMD:SOT-23 | Q302 |
The 193 most common of 194 parts.
Questions
How big is the Stopwatch PCB?
It measures 80 × 45 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Stopwatch use?
194 parts, built around the TPS62130ARGT, 74LVC1G97GV, HDSP-7503 and 74LVC1G80GW. 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 Stopwatch KiCad files?
From the drewsum/Stopwatch repository on GitHub, at the commit this page was made from: the board is hdw/rev_b/Stopwatch/Stopwatch.kicad_pcb and its schematic hdw/rev_a/Stopwatch/Clock_Output.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Stopwatch design in my own project?
Its repository states no licence, so its author keeps all rights: ask drewsum before reusing the design.
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