2 layers174 × 12 mm
Led bar
MG-5/nixie-clock-hardware
Hardware for controlling six Nixie IN-14 tubes as clock (HH:MM:SS)
17 parts2MIT
4 layers204 × 85 mm
Nixie clock
MG-5/nixie-clock-hardware2Hardware for controlling six Nixie IN-14 tubes as clock (HH:MM:SS)
- Size
- 204 × 85 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 168
- Nets
- 134
- Pads
- 525
- Tracks, vias
- 2,072, 525
- Pours
- 966
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 4 Mar 2024
- Updated
- 29 Dec 2024
Overview
Nixie clock is an open-source printed circuit board by MG-5, from the MG-5/nixie-clock-hardware repository on GitHub, published under the MIT licence. It is a 4-layer board of 204 × 85 mm with 168 parts on 134 nets, routed with 2,072 tracks and 525 vias.
It is built around the SN74HCS541DGS, LT3757AEMSE#PBF and TPS62175DQC, with the USBLC6-2SC6, 2N6517BU and 2N6520TA among its other parts. Its parts include 71 resistors, 27 transistors, 26 capacitors, 8 ICs and 5 connectors. It belongs with the lEDs and displays boards and the STM32 boards of this library.
Main components
8
SN74HCS541DGS
VSSOP-20-40℃~+125℃ 1 16ns@6V,50pF 2V~6V 2uA 7.8mA 7.8mA 74HCS 8 Output enable Schmitt trigger Tri-State VSSOP-20 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
LT3757AEMSE#PBF
MSOP-10-EP-40℃~+125℃@(TJ) 1 1MHz 2.9V~40V Boost Boost、SEPIC、Flyback、Inverting External No MSOP-10-EP DC-DC Converters ROHSAnalog DevicesDC-DC Converters
TPS62175DQC
SON104.75-28VDC to 1-6VDC, 500mA Step-Down Converter with Sleep ModeTexas InstrumentsUncategorised
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
2N6517BU
TO-92-31 NPN 20 300mV 350V 40MHz 500mA 50nA 625mW 6V NPN Standalone TO-92-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)
2N6520TA
TO-92-3L-55℃~+150℃ 1 PNP 20 200MHz 350V 500mA 500mV 50nA 5V 625mW PNP TO-92-3L Bipolar (BJT) ROHSonsemiBipolar (BJT)
ES1D
SMA(DO-214AC)-55℃~+150℃ 1 Independent 1A 1V@1A 200V 35ns 5uA@200V SMA(DO-214AC) Fast Recovery / High Efficiency Diodes ROHSMDDDiodes - Rectifiers - Fast Recovery
FDS2734
SOP-8-55℃~+150℃ 1 N-channel 2.5W 2.61nF 250V 2V 3A 40pF 45nC@10V SOP-8 MOSFETs ROHSonsemiMOSFETs
README
README.mdnixie-clock-hardware
Hardware for controlling six Nixie IN-14 tubes as clock (HH:MM:SS)
Requirements for rev 1.0
- efficient step-boost converter up to 190V
- multiplexing
- control syncronous addressable LEDs
- PWM control
- I²C interface
- connector for ESP (UART)
- time syncronisation line for every second
Known issues in rev 1.0
- octal buffer for PWM use seems do not works for dimming
- workaround: dimming solved by adding turn-off points in mulitplexing routine (firmware-based solution)
- bad mosfet selection -> high R_DSOn lead to heat at high current due diode reverse current shots
- workaround: use better Mosfet with TDSON-8 footprint that can be soldered onto the existing one
- caution: soldering TDSON-8 with thermal pad on back causes short circuit due to untented via underneath pad
- output cap is to small -> causes high voltage ripple
- workaround:
- add 2.2uF with 2220 footprint
- add 180uF electrolytic cap
- workaround:
- ESD protection on ARGB connector has wrong wiring
- workaround: do not use USBLC6 and add enameled copper wires
Renderings (rev 1.0)
Parts
168| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R17, R21, R25, R29, R33, R37, R41, R43, R45, R47, R49, R51, R53, R55, R57 +6 |
| 19 | 2N6517BU | Package_TO_SOT_THT:TO-92_Wide | Q2, Q10, Q12, Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23, Q24, Q25, Q26 +3 |
| 12 | 220k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R42, R44, R46, R48, R50, R52, R54, R56, R58, R60, R63, R66 |
| 9 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_ISO14580 | H1, H2, H3, H4, H5, H6, H7, H8, H9 |
| 8 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C4, C5, C9, C10, C11, C13, C25 |
| 7 | 13k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R18, R22, R26, R30, R34, R38, R68 |
| 7 | 2N6520TA | Package_TO_SOT_THT:TO-92_Wide | Q3, Q5, Q7, Q9, Q11, Q13, Q27 |
| 7 | 2k2 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R20, R24, R28, R32, R36, R40, R70 |
| 7 | 470k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R19, R23, R27, R31, R35, R39, R69 |
| 6 | IN-14 | nixies-us:nixies-us-IN-14 | N1, N2, N3, N4, N5, N6 |
| 4 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7, C14, C26 |
| 2 | 100n 35V | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C15, C17 |
| 2 | 180k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R15, R16 |
| 2 | 18k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R62, R65 |
| 2 | 2k2 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 1 | 100p | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C18 |
| 1 | 10n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C23 |
| 1 | 10u | Inductor_SMD:L_1210_3225Metric_Pad1.42x2.65mm_HandSolder | L1 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 10u 16V | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C22 |
| 1 | 10u 35V | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C19 |
| 1 | 120k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 15k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 190V | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | TP4 |
| 1 | 1M | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
| 1 | 22 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11 |
| 1 | 220m | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12 |
| 1 | 220n 35V | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C21 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
| 1 | 22u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 24k3 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9 |
| 1 | 2u2 35V | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 2x 220n 250V | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C24 |
| 1 | 3V3 | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | TP2 |
| 1 | 470p | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C12 |
| 1 | 470u (NS12555T471MN) | extraFootprints:Taiyo Yuden NS 12.5mmx12.5mm | L2 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
| 1 | 47n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16 |
| 1 | 560k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R13 |
| 1 | 5V | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | TP3 |
| 1 | 5k1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R14 |
| 1 | 6n8 | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C20 |
| 1 | ARGB | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J2 |
| 1 | C2Q 300 | Fuse:Fuse_0603_1608Metric_Pad1.05x0.95mm_HandSolder | F1 |
| 1 | Dot1 | Valve:Valve_Glimm | U6 |
| 1 | Dot2 | Valve:Valve_Glimm | U7 |
| 1 | ES1D | Diode_SMD:D_SOD-123F | D1 |
| 1 | ESP-Connector | Connector_Molex:Molex_PicoBlade_53047-0610_1x06_P1.25mm_Vertical | J5 |
| 1 | FDS2734 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | Q1 |
| 1 | GND | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | TP1 |
| 1 | I2C | Connector_Molex:Molex_PicoBlade_53047-0410_1x04_P1.25mm_Vertical | J3 |
| 1 | LT3757AEMSE | Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm | U5 |
| 1 | PTS815 | Button_Switch_SMD:SW_SPST_PTS810 | SW1 |
| 1 | Power Input | Connector_AMASS:AMASS_XT30U-M_1x02_P5.0mm_Vertical | J1 |
| 1 | SN74HCS541 | extraFootprints:VSSOP-20_5.1x3mm_P0.5mm | U8 |
| 1 | STM32F103CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U3 |
| 1 | SWD | Connector_Molex:Molex_PicoBlade_53047-0610_1x06_P1.25mm_Vertical | J4 |
| 1 | Schurter 3403.0266.23 | extraFootprints:Fuse Schurter UMT-H | F2 |
| 1 | TC1185 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | TPS62175DQC | Package_SON:WSON-10-1EP_2x3mm_P0.5mm_EP0.84x2.4mm_ThermalVias | U1 |
| 1 | TVS TPSMB210CA | Diode_SMD:D_SMB_Handsoldering | D2 |
| 1 | TimeSync | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | TP5 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
The 164 most common of 168 parts.
More from MG-5/nixie-clock-hardware
1Similar boards
- 4 layers192 × 71.8 mm
Vfd clock
MG-5/vfd-clock-hardware
Hardware for controlling six VFD IV-17 tubes as clock (HH:MM:SS)
130 parts1MIT - 2 layers65 × 71.5 mm
- 2 layers252.9 × 55 mm
- 4 layers120 × 93 mm
- 2 layers105.4 × 25.4 mm
Wrist ems 12 electrodes
humancomputerintegration/watchEMS
This repository contains the source code used in the research publication "Can a Smartwatch Move Your Fingers?" from the Human-Computer Integration Lab at the University of Chicago.
131 parts - 2 layers165 × 51 mm
- 4 layers18.2 × 26.2 mm
- 4 layers18.2 × 34.3 mm
O2 input CJ125
rusefi/hw_legacy
In this repo we archive rusEfi-related abandoned hardware files
39 parts2
Questions
How big is the Nixie clock PCB?
It measures 204 × 85 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Nixie clock use?
168 parts, built around the SN74HCS541DGS, LT3757AEMSE#PBF, TPS62175DQC and USBLC6-2SC6. 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 Nixie clock KiCad files?
From the MG-5/nixie-clock-hardware repository on GitHub, at the commit this page was made from: the board is nixie-clock.kicad_pcb and its schematic high-side-switch.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nixie clock design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).