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Nixie v2 Processor Board

PennyLekas·Nixie-Clock·Hardware/v2 - RP2040/Processor Board/Nixie v2 Processor Board.kicad_pcb

Nixie v2 Processor Board layout, top view — open source RP2040/RP2350 board by PennyLekas

About the Nixie v2 Processor Board

Nixie v2 Processor Board is an open source RP2040/RP2350 PCB design by PennyLekas, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 100 × 50 mm, with 60 components from 41 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the TPS82084SIL, AP22913, DS3231MZ, W25Q128JVP and MCP23017_ML. By type, the board carries 23 capacitors, 17 resistors, 8 connectors, 6 ICs, 4 switches and 1 crystal.

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

From the project

v1 is broken and required some bodge wires to work. I have not updated the schematic and PCB to correct my mistakes. It also has some deficencies in the dimming circuit resulint in a quiet, but audible whine.

v1 is broken and required some bodge wires to work. I have not updated the schematic and PCB to correct my mistakes. It also has some deficencies in the dimming circuit resulint in a quiet, but audible whine.

v2 is in progress and will fix many issues and make the clock easier to update. It wil be using an RP2040.

Features - Automatic time seting using GPS - User sets their time zone using dip switches - Tubes dim with ambient light - Day light savings time will be controlled using a +/-1 switch - Plenty of test points for testing and hacking - USB C for power and data

Main components on the Nixie v2 Processor Board

TPS82084SILAP22913DS3231MZRP2040W25Q128JVPMCP23017_ML

Nixie v2 Processor Board bill of materials (BOM)

60 components, 41 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS82084SIL
U1
1
AP22913
U2
1
DS3231MZ
U3
1
RP2040
U4
1
W25Q128JVP
U5
1
MCP23017_ML
U6
1
ABM10-166-12.000MHZ-T3
12MHz
Y1
3
Conn_01x10_Socket
J1, J2, J3
1
Conn_01x01_Pin
J4
1
AudioJack3_SwitchT
J5
1
USB_C_Receptacle_USB2.0
J6
2
Conn_01x03_2.54mm
J7, J8
1
BK-916-TR
CR1220
BT1
3
KMR213G LFG
SW_Push
SW1, SW2, SW4
1
219-10MST
SW_DIP_x10
SW3
1
0.1UF
10u
C1
1
0.1UF
22u
C2
2
0.1UF
1u
C3, C4
3
10UF
100n
C5, C9, C12
3
0.1UF
100n
C6, C10, C11
Show 21 more
QtyPartRefs
2
1UF
100n
C7, C8
1
100UF
100n
C13
1
4.7UF
1u
C14
1
1UF
1u
C15
1
10UF
100n
C16
2
0.22UF
100n
C17, C18
1
1u
C19
2
8p
C20, C21
2
100n
C22, C23
1
10K
523k
R1
1
169k
R2
1
10K
499k
R3
2
10K
27.4
R4, R5
1
10K
5.1k
R6
1
100K
5.1k
R7
2
100K
10k
R8, R16
1
100K
2.2k
R9
1
10K
2.2k
R10
4
10K
10k
R11, R13, R15, R17
1
10K
1k
R12
1
10K
1k
R14

Nixie v2 Processor Board design files

The KiCad project lives in the PennyLekas/Nixie-Clock repository on GitHub; these links point at the commit this page was built from.

Nixie v2 Processor Board: common questions

What microcontroller does the Nixie v2 Processor Board use?

The Nixie v2 Processor Board is built around the RP2040, from the RP2040/RP2350 family.

How big is the Nixie v2 Processor Board?

The Nixie v2 Processor Board measures 100 × 50 mm, has 2 copper layers and is 1.646 mm thick.

How many components are on the Nixie v2 Processor Board?

60 components, from 41 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 Nixie v2 Processor Board design files?

From the PennyLekas/Nixie-Clock repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Nixie v2 Processor Board design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which PennyLekas chose for the repository.

Can I test firmware for the Nixie v2 Processor Board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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