HardLabs

Nixiedisp

jtsiomb·nixiedisp·hw/nixiedisp.kicad_pcb

Nixiedisp PCB layout, top view — open source AVR/Arduino board by jtsiomb

About the Nixiedisp PCB

Nixiedisp is an open source AVR/Arduino PCB design by jtsiomb, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 140 × 76.1 mm, with 224 components from 45 distinct parts.

Its main chip is the ATMEGA328PB-AU, from the AVR/Arduino family. Other key parts include the MAX232, 74HC126, MCP2221AXSL, 74HC164 and IN14. By type, the board carries 89 resistors, 69 transistors, 28 capacitors, 22 ICs, 6 connectors and 3 crystals.

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

From the project

USB nixie tube numeric display

nixiedisp - USB nixie tube display ==================================

Nixiedisp is a 6-digit nixie tube numeric display, software-controlled over USB or RS232, that also functions standalone as a clock.

Features: - Controlled over USB or RS232 serial port to display arbitrary numbers, set the time/date, change settings, and switch between modes of operation. - Standalone operation as a clock or stopwatch timer with a battery-backed real-time clock (CR2032 coin cell). - Designed to use soviet IN-14 nixie tubes. - Powered by a 12v DC supply through a standard 2mm barrel jack (center-positive).

Nixiedisp, from the project README
From the project README

Main components on the Nixiedisp

ATMEGA328PB-AUMAX23274HC126MCP2221AXSL74HC164IN1474HC4514DS1302Z+MC34063AD7805

Nixiedisp bill of materials (BOM)

224 components, 45 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA328PB-AU
ATmega328P-AU
U1
1
MAX232
U2
1
74HC126
U3
1
MCP2221AXSL
MCP2221AxSL
U4
3
74HC164
U5, U6, U7
6
IN14
U8, U9, U10, U11, U12, U13
6
74HC4514
U14, U15, U16, U17, U18, U19
1
DS1302Z+
U32
1
MC34063AD
U33
1
7805
L7805
U34
2
MMBTA55
Q1, Q2
66
MMBTA42
Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10 +58
1
IRF740A
IRF740
Q69
1
14.7456MHZ
14.7456MHz
Y1
1
32.768KHZ
32.768KHz
Y2
1
32.768KHZ
32.768KHz
Y3
1
USB_B_Micro
J2
1
AVR-ISP
J3
1
12VDC IN
J4
1
HRLEDS
J5
Show 25 more
QtyPartRefs
1
pwr sw
J6
1
usbpwr
J7
1
3V
BT1
1
MODE
SW1
1
A
SW2
1
B
SW3
1
1N4148
D1
1
MUR160
D2
1
220UH
220uH
L1
5
1uF
C1, C2, C4, C8, C15
15
0.1UF
0.1uF
C3, C5, C6, C7, C9, C10, C13, C14 +7
2
22PF
22pF
C11, C12
1
2.2NF
2.2nF
C16
2
0.33uF
C35, C36
1
220uF
C37
1
10NF
10nF
C38
1
2.2uF 250V
C39
3
10K
10k
R1, R2, R27
3
1R
R3, R4, R7
3
1K
R5, R6, R8
6
24K
24k
R9, R10, R11, R12, R13, R14
66
47k
R15, R16, R17, R18, R19, R20, R22, R23 +58
6
160K
160k
R21, R34, R47, R60, R73, R86
1
475K
R93
1
3.32K
3K32
R94

Nixiedisp design files

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

Nixiedisp: common questions

What microcontroller does the Nixiedisp use?

The Nixiedisp is built around the ATMEGA328PB-AU, from the AVR/Arduino family.

How big is the Nixiedisp PCB?

The Nixiedisp measures 140 × 76.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nixiedisp?

224 components, from 45 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Nixiedisp design files?

From the jtsiomb/nixiedisp repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Nixiedisp design in my own project?

Yes, under the terms of its GPL-3.0 license, which jtsiomb chose for the repository.

Can I test firmware for the Nixiedisp without the hardware?

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

Similar boards