Instructables
Picture of IV-11 VFD Clock
Here is my version of a VFD clock, running on Arduino (atmega328).

I have researched many of the VFD clock threads out there and this is what came of it.


Thanks to:

Ladyada for the ice clock write up. www.ladyada.net/make/icetube/index.html

Haris for the IV-11 write up. www.candrian.gr/index.php/iv-11-vfd-tube-clock-final-design/

Kevin Darrah for his explanation of multiplexing using an Arduino. www.kevindarrah.com



Please note that I am not an electrical engineer, this is just a hobby, so apologies for any scary design :-)

Also if you like my work then please vote for me as I have entered the micro controller contest, Thank you.
 
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Step 1: Board Design

Picture of Board Design
IV-11b_pcb.png
IV-1b_pcb.png
clock-ha-sch_schem.png
So using the many threads out there I started designing my pcb using Fritzing.

Fritzing also supply a fabrication service which is well priced and very easy to use.

My design was based on the replaceable bulb style, so using separate plugin boards for the VFD bulbs. I thought this would be better than unsoldering stuff if there is a bulb failure.

The clock would use a real time clock ic and a temperature sensor.

There will be three buttons for menu operation.

I also found a nice little touch ic on HobbyTronics website, this will be used as a button to switch the clock mode between time, date and temperature. 

I must admit that board design is great fun, it really brings out the OCD side of me ;-)

Step 2: Boards And Parts

Here is a summary of the parts used, this is a work in progress so this isn't finalised.

VFD Clock Board
IV-11 Board
IV-1 Board
IV-11 Tube
IV-1 Tube
VFD Driver IC
ATMEGA328
2x6 Header Female
2x3 Header Female
1x36 Header Male
Low Profile Crystal Caps
Watch Crystal
Realtime Clock
Temperature Sensor
Touch Switch IC
28 Pin DIL Socket
8 Pin DIL Socket
Battery Clip 12mm
Battery 12mm
5v Switching Regulator
1.2v Switching Regulator
Inductor 2.2mH
Diode Schot 60v 1A
Diode Zener
Miniature Slide Switch
DC 2.1mm Socket
Tact Switch Right Angle
Tact Switch Normal
P Channel MOSFET
3mm LED Blue
NPN Transistor
Various Caps and Resistors

Step 3: Board Fabrication

Picture of Board Fabrication
Here are the lovely boards as fabricated by Fritzing :-)
thundersticks4 months ago

It would be fantastic if you could upload or provide a link to the Fritzing .fzz sketch export file so others could also order the PCB. Great project, hope to utilize some tubes I have had for months waiting for a clock design like this to come along at an opportune time. Thanks again in advance if you have the .fzz file or can share it on the Fritzing fab page.

James

Hi, beautiful project! Please it should be nice if you upload the fritzing schematic file and a list of components' values. Since I'm designing a VFD clock your ible will be very helpful. I will also wait for the code ;-) thanks very much!
rojm (author)  andrea biffi1 year ago
Hi,
Glad you like the clock, I have just added a new section showing my attempt at a case for it.
Believe it or not I don't have a schematic with all the component values on as I am strange and build using the board design not the schematic. I will update the version I have post on here with some values for you, but you will have to be patient as I don't have much time at the moment.
I will see if I can tidy up the code tonight and post that for you.
Thanks Roj, beautiful case btw!
rojm (author) 1 year ago
I have just uploaded a rather chaotic schematic.
Will upload the code next, when I get a chance to comment it properly.