Gemini Two Tube Clock
3
Update #1 (21
st
May 2019)
www.nixology.uk
Tubes Supported
The clock drives only two tubes, each one being driven directly by a dedicated
Nixie Tube Driver IC.
The connections for the tubes are provided by 2x6 pin headers with the following
details (viewed from the top of the connector):
Attach a suitable ribbon cable from this connector to your choice of tubes*. The
arrangement of the signals on the connector matches those available from PV
Electronics for the QTC clock range. Tube Cells for other tube types are available
from nixology.uk including those for the connection of Z566M/GN4P, IN-18, ZIN-
18 and RJ568M (Dalibor Farny).
Tube cells for the larger tube types incorporate connections for additional
APA106 LED’s
*Depending on the chosen tube type it may be necessary to change R3 and R4
from the 10k supplied to match your tubes.