[neonixie-l] Re: IN-4 eagle template

[threeneurons]

The IN-4 & IN-18 can be used in the same socket. Physical pin spacing is 
the same (14-pins, on a 18mm diameter pin circle, 24.5 degrees apart). 
Pin-out assignments is different, between the two.

Pin #  IN-4  IN-18
  
. 1 . . . K4 . . N/C
. 2 . . . K6 . . K4
. 3 . . . K8 . . K5
. 4 . . .SCR* Anode
. 5 . . . K9 . . K6
. 6 . . . K7 . . K7
. 7 . . . N/C . K3
. 8 . . . K0 . . N/C
. 9 . . . K2 . . K8
.10. . . A2* . K2
.11. . . K3 . . K1
.12. . . K5 . . Anode
.13. . . A1*. . K0
.14. . . K1 . . N/C

*the IN-4 has two different configurations. One has two anodes (A1 & A2), 
and separating screen, allowing it to be operated as a bi-quinary nixie, in 
addition to a "traditional" nixie. The other configuration omits the screen 
and an anode. It only has one (A1), and can only be operated in the 
traditional mode.

I just plugged an IN-4 tube into a IN-18 socket, and it fits without issue. 
So this is NOT a guess, but CONFIRMED.

Though, I would suggest against the IN-4 for a nixie clock, as it does not 
contain mercury, and therefore has a short life. I found that out the hard 
way. My first nixie clock used two IN-4s paired with two ZM1032 (biquinary) 
nixies:

First photo 


The 8051 uC drove all 4 as a multiplexed biquinary group. 2x4=8 anode 
drives, and 5-cathode pairs. 8x5. More complicated than it needed to be if 
I just used regular nixies. Biquinary only has an advantage when run by 
descrete circuitry. ICs made them obsolete.

Well the short life of the IN-4, caused the zero to disappear in less than 
a year. Mercury is a good thing in nixies (IN-8-2, IN-12, IN-14, IN-16, 
IN-17, & IN-18).


On Wednesday, October 24, 2018 at 9:39:49 AM UTC-7, Mateusz Dziuba wrote:
>
> Hi! My name is Mateusz and I am trying to build nixie clock on 6 IN-4 
> lamps.
> I based my design on 
> https://www.instructables.com/id/simple-user-adjustable-DIY-Nixie-Clock/
>
> I want to redesign front shield, but cannot find proper eagle template for 
> IN-4 on internet. 
> I download adafruit libraries with russian_tubes.lbr, but it seems they 
> just link IN-18 template to it. I managed to change pins order as it is for 
> IN-4, but I am still thinking, the pins positions are not correct.
>
> Do You have NIXIE IN-4 eagle template? How You manage to design clocks 
> with IN-4?
>
>
>

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[neonixie-l] Re: IN-4 eagle template

[Mateusz Dziuba]

Thanks! I didn't make a PCB yet, but when comparing with IN-4 in hand, it 
seems the angles and distances are correct.

W dniu wtorek, 30 października 2018 00:22:56 UTC+1 użytkownik Paul Andrews 
napisał:
>
> I uploaded a fix to my library (which is the one you mention below, but 
> with other fixes too): 
> https://github.com/judge2005/Eagle-and-KiCAD-Nixie-Libs/blob/master/nixies-us.lbr
> .
>
> I haven't tried it, but you should be able to verify it.
>
> On Wednesday, October 24, 2018 at 12:39:49 PM UTC-4, Mateusz Dziuba wrote:
>>
>> Hi! My name is Mateusz and I am trying to build nixie clock on 6 IN-4 
>> lamps.
>> I based my design on 
>> https://www.instructables.com/id/simple-user-adjustable-DIY-Nixie-Clock/
>>
>> I want to redesign front shield, but cannot find proper eagle template 
>> for IN-4 on internet. 
>> I download adafruit libraries with russian_tubes.lbr, but it seems they 
>> just link IN-18 template to it. I managed to change pins order as it is for 
>> IN-4, but I am still thinking, the pins positions are not correct.
>>
>> Do You have NIXIE IN-4 eagle template? How You manage to design clocks 
>> with IN-4?
>>
>>
>>

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[neonixie-l] Re: IN-4 eagle template

[Paul Andrews]

I uploaded a fix to my library (which is the one you mention below, but 
with other fixes 
too): 
https://github.com/judge2005/Eagle-and-KiCAD-Nixie-Libs/blob/master/nixies-us.lbr.

I haven't tried it, but you should be able to verify it.

On Wednesday, October 24, 2018 at 12:39:49 PM UTC-4, Mateusz Dziuba wrote:
>
> Hi! My name is Mateusz and I am trying to build nixie clock on 6 IN-4 
> lamps.
> I based my design on 
> https://www.instructables.com/id/simple-user-adjustable-DIY-Nixie-Clock/
>
> I want to redesign front shield, but cannot find proper eagle template for 
> IN-4 on internet. 
> I download adafruit libraries with russian_tubes.lbr, but it seems they 
> just link IN-18 template to it. I managed to change pins order as it is for 
> IN-4, but I am still thinking, the pins positions are not correct.
>
> Do You have NIXIE IN-4 eagle template? How You manage to design clocks 
> with IN-4?
>
>
>

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