A quick check of my Mouser catalog shows some
Stock # 642-A010X for starters
Then add the LED and Screen
Total cost - about $27
OR 117-MP45/1E1RN012 only about $15
Is that enough to get you started?
They exist, but you'll likely pay through the nose for them. Here's
a link to alternate action (push on/push off) pushbutton switches at
Mouser. This includes illuminated and non-illuminated. Use the menus to
refine the search for the type of illumination, contact type, and
terminals that you want.
An auto parts supply house is one source, but they will look funny, what
with fog-lamp symbols on them and such, and they will cost you
loadsadough. Another source would be a shop that specialises in
supplying commercial control panel parts, such as are used in factories,
IT distribution panels, etc. These are also pricey, but come in many
colours and sizes. The yellow pages or an acquaintance in the electrical
business will guide you to the source. I googled "control panel push
button suppliers", but most of the hitt were manufacturers in India and
Much cheaper alternative 1: SPST (or DPDT) bat-handle switches - the
position of the handles will show power on/off. You can paint one or
both sides of the handle some bright colour(s) to increase visibility.
Somewhat cheaper alternative 2: wire LEDs in parallel to the track
power.)(1) You'll need a dropping resistor to prevent the LED to fatally
overindulge in power. If you use different colours, one will indicate
eastbound, the other westbound. Handy. Or obsessive. ;-)
(1) This wiring in parallel is done at the control panel, you don't need
to run extra wires to the track itself.
Farnell (http://uk.farnell.com ) seem to have dozens of varieties for a
range of prices starting from a pound or two and going up to L10 or
I started by typing `illuminated switch' into the search box and then
using the parametric refinement. Useful search terms probably include
`latching' and `push on push off'.
SPST, DPDT and so on refer to the number of poles and whether the
switch just opens and closes or whether it switches between two sets
of contacts. SPST = Single Pole Single Throw; DPDT = Dual Pole Dual
Farnell have a minimum of L20 for ordinary credit card orders.
Ian Jackson personal email: < email@example.com>
These opinions are my own. http://www.chiark.greenend.org.uk/~ijackson /
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