2 layers185 × 73 mm
Nixie Clock
AngryRabbitChicken/Nixie-Clock
My Nixie clock based on the IN-14 Tubes with an ESP8266 as interface and time-reciever, with an optional DCF77 Antenna.
33 partsGPL-3.0
2 layers240 × 38.7 mm
ETAclock
drkmsmithjr/ETANixieClock6An Estimated Time of Arrival Nixie Tube Clock Open Source Hardware Project
- Size
- 240 × 38.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 126
- Nets
- 154
- Pads
- 483
- Tracks, vias
- 1,931, 339
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 2 Apr 2018
- Updated
- 16 Aug 2018
Overview
ETAclock is an open-source printed circuit board by drkmsmithjr, from the drkmsmithjr/ETANixieClock repository on GitHub. It is a 2-layer board of 240 × 38.7 mm with 126 parts on 154 nets, routed with 1,931 tracks and 339 vias.
It is built around the TPIC6B595N, 74HCT04D and MMBT3906, with the MMBTA42 among its other parts. Its parts include 49 resistors, 24 transistors, 20 capacitors, 12 ICs and 7 connectors. It belongs with the lEDs and displays boards and the Raspberry Pi (Linux) boards of this library.
Main components
4
TPIC6B595N
PDIP-20-40℃~+125℃ 1 4.5V~5.5V 8 Asynchronous clear function、Output enable Open-drain Serial-to-Serial or Parallel TPIC PDIP-20 Shift Registers ROHSTexas InstrumentsShift Registers
74HCT04D
SO-14-40℃~+125℃ 1 19ns@4.5V,50pF 2V 2uA 3.7V 4.5V~5.5V 400mV 4mA 4mA 6 74HCT 800mV SO-14 Inverters ROHSNexperiaInverters
MMBT3906
SOT-23-55℃~+150℃ 1 PNP 100 100nA 200mA 200mW 300MHz 300mV 40V 5V PNP SOT-23 Bipolar (BJT) ROHSTWGMCBipolar (BJT)MMBTA42
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mV 300V 350mW 500mA 50MHz 5V NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
README
README.mdEstimated Time of Arrival (ETA) Nixie Tube Clock
This DIY project will combine the estimated time of arrival function with a nixie tube display to create an estimated time of arrival (ETA) Nixie tube clock. It is all easily controlled by a Raspberry Pi Zero W that is connected to the internet through WiFi to provide the latest time and gets the ETA for any number of destinations. The travel time is provided by the free Google Directions API interface that includes traffic to give the best estimates on any particular day. The goal is that with an ETA Nixie tube clock, no math is needed to add a rough, often optimistic travel time, to the actual time to determine if we are running late. The clock does that for you and with the power of IOT, is much more accurate! A motion sensor is also added to the clock to turn off the Nixie Tube Display when no one is around, saving power and increasing the nixie tube lifetime. The complete project, including the six IN-4 Nixie tubes, are powered from a 1 amp iPhone charger using the 5v to 170v Nixie Tube Power supply described in another repository.
See www.surfncircuits.com for a complete description. This github repository contains the Kicad Schematic, Spice Simulation, Efficiency Calculations of the Estimated Time of Arrival (ETA) Nixie Tube Clock.
ETANixieCode: This is the python code that will be placed in the ETANixieClock directory on the Raspberry Pi zero.
KC_ETAclock-5v: KiCad schematic, PCB Layout, BOM of the ETA Nixie tube clock. You can order the PCB from oshPark at 
SimCalcFiles: Spice simulation files of the Nixie Tube bi-quinary driving circuit.
Datasheeets: Datasheets for the pinout and the TPIC6B595. In the Kicad Schematic, the part numbers and Digikey (TM) links are listed already. Also the complete BOM is located in the KC-ETAclock-5v Directory (ETAclock_BOM.ods).
See the complete blogs entry at www.surfncircuits.com
Parts
126| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 470k | Resistors_SMD:R_0805 | R17, R18, R22, R23, R25, R26, R30, R31, R33, R34, R38, R39, R41, R42, R46, R47 +8 |
| 18 | 10k | Resistors_SMD:R_0805 | R19, R20, R21, R27, R28, R29, R35, R36, R37, R43, R44, R45, R51, R52, R53, R59 +2 |
| 12 | MMBT3906 | TO_SOT_Packages_SMD:SOT-23 | Q3, Q5, Q7, Q9, Q11, Q13, Q15, Q17, Q19, Q21, Q23, Q25 |
| 12 | MMBTA42 | TO_SOT_Packages_SMD:SOT-23 | Q2, Q4, Q6, Q8, Q10, Q12, Q14, Q16, Q18, Q20, Q22, Q24 |
| 11 | TEST | Connectors:PINTST | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11 |
| 6 | 0.1uF | Capacitors_SMD:C_0805 | C23, C24, C25, C26, C27, C28 |
| 6 | 0.1uF 250v | Capacitors_SMD:C_0805 | C1, C2, C3, C4, C5, C6 |
| 6 | 1uF | Capacitors_SMD:C_0805 | C29, C30, C31, C32, C33, C34 |
| 6 | 22k | Resistors_SMD:R_0805 | R24, R32, R40, R48, R56, R64 |
| 6 | IN-4 | etaclock:IN-4 | U3, U5, U8, U10, U12, U13 |
| 5 | TPIC6B595 | Housings_SOIC:SOIC-20W_7.5x12.8mm_Pitch1.27mm | U4, U7, U9, U11, U14 |
| 4 | Conn_01x01 | Mounting_Holes:MountingHole_2.2mm_M2_Pad | J1, J2, J3, J4 |
| 2 | 47uF 10v | Capacitors_SMD:C_0805 | C17, C19 |
| 1 | 1k | Resistors_SMD:R_0805 | R90 |
| 1 | 60ohm 100Mhz | Resistors_SMD:R_0805 | L1 |
| 1 | 74HCT04 | Housings_SOIC:SOIC-14_3.9x8.7mm_Pitch1.27mm | U6 |
| 1 | Conn_01x05 | Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm | J6 |
| 1 | LOGO | LOGO | |
| 1 | OSHW_logo_silkscreen-front_5mm | OSHW_logo_silkscreen-front_5mm | |
| 1 | Raspberry_PI_Zero_Hat | etaclock:R_Pi_Zero_40pins_No_Mount | P15 |
| 1 | USB_SUPPLY | etaclock:USB_SUPPLY_5v_TO_170v_MINI_2M | J5 |
Questions
How big is the ETAclock PCB?
It measures 240 × 38.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ETAclock use?
126 parts, built around the TPIC6B595N, 74HCT04D, MMBT3906 and MMBTA42. 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 ETAclock KiCad files?
From the drkmsmithjr/ETANixieClock repository on GitHub, at the commit this page was made from: the board is KC-ETAclock-5v/ETAclock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ETAclock design in my own project?
Its repository states no licence, so its author keeps all rights: ask drkmsmithjr before reusing the design.
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