HardLabs

ILV2-7-5 VFD Display

biomurph·ILV2-7-5_VFD_Display·ILV2-7-5_Clock/ILV2-7-5_Clock.kicad_pcb

ILV2-7-5 VFD Display PCB layout, top view — open source PIC board by biomurph

About the ILV2-7-5 VFD Display PCB

ILV2-7-5 VFD Display is an open source PIC PCB design by biomurph, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 92 × 76 mm, with 50 components from 27 distinct parts.

Its main chip is the PIC32MX250F128B, from the PIC family. Other key parts include the DS3231M, 74HC2G14, TLV76033DBZR, MAX6920 and TC1014-2.5VCT713. By type, the board carries 17 capacitors, 10 resistors, 6 ICs, 4 transistors, 4 switches and 3 connectors.

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

From the project

KiCAD circuit for a VFD Clock using the Popular ILV2-7/5 flat tube segmented nixie

This work is greatly indebted to work that came before. Namely Callum Nunez-Vas and his Dogbone Watch which is also based on the cyberpunk wristwatch by johngineer.

First, my uC is a PIC32MX250F128B, which supports USB OTG, which is nice and it's also Arduino compatible via ChipKIT and Digilent's DP32 which makes it nice for sharing.

The other thing that I changed is the oscillator that Callum used to drive the Cathode filament. Callum drives it with a timer on his PIC16F828. I needed more pins, so I decided to make a stand-alone relaxation oscillator built out of a 74HCG214 dual Schmidtt…

ILV2-7-5 VFD Display, from the project README
From the project README

Main components on the ILV2-7-5 VFD Display

DS3231M74HC2G14PIC32MX250F128BTLV76033DBZRMAX6920TC1014-2.5VCT713

ILV2-7-5 VFD Display bill of materials (BOM)

50 components, 27 distinct parts.

QtyPartRefs
1
DS3231M
U1
1
74HC2G14
U2
1
PIC32MX250F128B
U3
1
TLV76033DBZR
U4
1
MAX6920
U5
1
TC1014-2.5VCT713
U8
2
BSS84
Q1, Q3
2
BSS138
Q2, Q4
1
8MHz
Y1
1
CONN_01X05
J1
1
USB_OTG
J2
1
BARREL_JACK
J3
1
Battery_Cell
BT1
3
TACT_SWITCH
SW1, SW2, SW4
1
GF-1123-1110
SW3
1
ILV2-7/5
VFD1
1
LED
D1
2
500mA 30V
D2, D3
2
18pF
C1, C4
6
1uF
C2, C13, C15, C16, C18, C21
Show 7 more
QtyPartRefs
6
0.1uF
C3, C5, C8, C9, C10, C11
1
0.15uF
C6
1
10uF
C7
1
4.7uF 50V
C17
7
10k
R1, R3, R4, R5, R6, R9, R10
2
22R
R7, R8
1
1k
R11

ILV2-7-5 VFD Display design files

The KiCad project lives in the biomurph/ILV2-7-5_VFD_Display repository on GitHub; these links point at the commit this page was built from.

ILV2-7-5 VFD Display: common questions

What microcontroller does the ILV2-7-5 VFD Display use?

The ILV2-7-5 VFD Display is built around the PIC32MX250F128B, from the PIC family.

How big is the ILV2-7-5 VFD Display PCB?

The ILV2-7-5 VFD Display measures 92 × 76 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ILV2-7-5 VFD Display?

50 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the ILV2-7-5 VFD Display design files?

From the biomurph/ILV2-7-5_VFD_Display repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the ILV2-7-5 VFD Display design in my own project?

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

Can I test firmware for the ILV2-7-5 VFD Display without the hardware?

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

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