HardLabs

ETANixieClock

drkmsmithjr·ETANixieClock·KC-ETAclock-5v/ETAclock.kicad_pcb

ETANixieClock PCB layout, top view — open source Raspberry Pi board by drkmsmithjr
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About the ETANixieClock PCB

ETANixieClock is an open source Raspberry Pi PCB design by drkmsmithjr, published on GitHub under the Custom license license. It is a 2-layer board measuring 240 × 38.7 mm, with 120 components from 18 distinct parts.

Its main chip is the Raspberry_PI_Zero_Hat, from the Raspberry Pi family. Other key parts include the IN-4, TPIC6B595 and 74HCT04. By type, the board carries 49 resistors, 24 transistors, 20 capacitors, 12 ICs, 11 test points and 3 connectors.

It belongs with the displays & leds, iot & wireless and power & battery designs in this gallery.

From the project

An Estimated Time of Arrival Nixie Tube Clock Open Source Hardware Project

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.

KCETAclock-5v__: KiCad schematic, PCB Layout, BOM of the ETA Nixie tube clock. You can order the PCB from oshPark at

ETANixieClock, from the project README
From the project README

Main components on the ETANixieClock

IN-4TPIC6B59574HCT04

ETANixieClock bill of materials (BOM)

120 components, 18 distinct parts.

QtyPartRefs
6
IN-4
U3, U5, U8, U10, U12, U13
5
TPIC6B595
U4, U7, U9, U11, U14
1
74HCT04
U6
12
MMBTA42
Q2, Q4, Q6, Q8, Q10, Q12, Q14, Q16 +4
12
MMBT3906
Q3, Q5, Q7, Q9, Q11, Q13, Q15, Q17 +4
1
USB_SUPPLY
J5
1
Conn_01x05
J6
1
Raspberry_PI_Zero_Hat
P15
11
TEST
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +3
1
60ohm 100Mhz
L1
6
0.1uF 250v
C1, C2, C3, C4, C5, C6
2
47uF 10v
C17, C19
6
0.1uF
C23, C24, C25, C26, C27, C28
6
1uF
C29, C30, C31, C32, C33, C34
24
470k
R17, R18, R22, R23, R25, R26, R30, R31 +16
18
10k
R19, R20, R21, R27, R28, R29, R35, R36 +10
6
22k
R24, R32, R40, R48, R56, R64
1
1k
R90

ETANixieClock design files

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

ETANixieClock: common questions

What microcontroller does the ETANixieClock use?

The ETANixieClock is built around the Raspberry_PI_Zero_Hat, from the Raspberry Pi family.

How big is the ETANixieClock PCB?

The ETANixieClock measures 240 × 38.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ETANixieClock?

120 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the ETANixieClock design files?

From the drkmsmithjr/ETANixieClock repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the ETANixieClock design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the ETANixieClock without the hardware?

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

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