As a keen home woodworker, I'm experimenting with home made motorised
blast gates for a dust connection system and am looking for some of the
above as actuators.
Any of you handyman/ plumber types that might have some scrap one in
your junk boxes please?
Often these fail due to damaged microswitches and I don't need this to
be working and I don't need the valve body either.
I'd obviously cover your postage costs and slip in a modest beer voucher
as a thank you.
Thanks in advance
email address suitably modified will reach me.
All in use here I'm afraid.
If you're stuck, these aren't bad as pattern equivalents at 30quid:
In case you don't already know, the actuator output socket relies on the
device (valve or other) spindle for support and will not work without
Thanks Fred, yes there will be an equivalent support spindle in the
blast gate to support the actuator.
I'd seen the toolstation ones thanks just trying to eek out my pension
by scrounging first lol
I know we have a few handyman types and plumbers on here who may well
have used ones in their scrap.
Have you thought about servo's? cheaply available from hobby type shops,
or ebay, available in loads of different torque values, easy to connect to
things with linkages and so on,
and easy to operate, an arduino could programmed and used to monitor which
machines are in use (thinking current transformers) and alter the blast
gates to suit,
Thanks for the ideas,
I already have CTs fitted to turn on the extractor when the machine come
on. If it works, my plan will be to use the spring return of the valve
head to shut a butterfly gate and drive the valve motor direct from the
machine motor switch to open it.
I've got arduinos doing jobs in electrically quieter parts of the house
on renewable energy management but the workshop has high power inverters
and all sort of other electrically noisy stuff. Some other CMOS logic in
the workshop is already a bit sensitive to spikes so trying to keep this
fairly simple if poss.
ahhhh, i forgot about noisy electrical environments and arduino's,
we're having that problem at our hackspace with the arduino controlled RFID
reader on the laser cutter (to ensure only authorised/trained people use it,
and to keep track of usage to bill the users for the time they use the laser
When ever the tig welder is used whilst the laser cutter is in operation the
arduino crashes and shuts the laser down, pretty annoying when your near the
end of a full A0 sheet of parts being engraved and cut out.
Having to screen all cables, mount all electronics in metal enclosures fully
earth bonded, moved the laser power sockets to the phase the tig welder does
not use (the Tig is a fairly large 2 phase machine) and moved the laser as
far away from the tig as possible,
and it still occasionally takes the RFID reader out,
That's certainly a hostile environment.
Maybe consider using the arduino for authentication and to initiate a
cycle then maintain the auth in clunky relay logic which resets at the
end of a cycle (end of power use).
As an aside, for EMC testing I have always made my own cables with full
360deg screen bond at connectors and a bit of conductive epoxy or tape
to guarantee the bond between parts. Testers love to zap connector
shields at the ESD phase and that is the way I have managed to keep an
unconcerned look on my face and a satisfied smirk off theirs.
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