Has anyone used these guys? http://www.uxcell.com
I ask because they have really, really, low prices on stuff. http://www.uxcell.com/pneumatics-c-1920_1921.html 16mm Bore 25mm Stroke Single Rod Double Action Air Cylinder for $9.99 Their prices seem so low compared to other pneumatics sources that I wonder if its really just some kind of scam. Or the parts are complete junk (which is one particular kind of scam). But if its legit, a pneumatic skull would be within the realm of possibilities. One of the projects I wanted to do with the microcontroller was to make a smart steam valve for some of the radiators in my house. Then I started looking at solonoid valves that could handle steam, and they were usually a couple hundred dollars. uxcell has one for $17. http://www.uxcell.com/24v-320ma-76w-thread-dia-port-position-solenoid-valve-p-176976.html Greg > Mark Komarinski wrote: >> Ah, a friend gave me [a solenoid] that is in two pieces (the inner shaft >> can be >> removed from the solenoid). > > Yes, that's a typical design. The first of the two products I linked to > is like that. > > >> The range of movement was rather small but >> after thinking about it may be enough to get the jaw to open. > > A lever will increase the travel. Or just find a different solenoid with > a longer travel. > > If you don't need a lot of force, and have a solenoid with a removable > plunger, you can stretch beyond the manufacturer's travel specification, > but I believe the force decreases following the inverse square of the > distance. > > Automotive door look actuators can be a good source for fairly long > travel solenoids (technically I think some are motors). This one: > > http://www.amazon.com/HIGH-POWER-DOOR-LOCK-ACTUATOR/dp/B0002KR9PW > > has 3/4" travel, and instead of using a spring return you reverse > polarity. > > -Tom > > _______________________________________________ > Hardwarehacking mailing list > [email protected] > http://lists.blu.org/mailman/listinfo/hardwarehacking > -- _______________________________________________ Hardwarehacking mailing list [email protected] http://lists.blu.org/mailman/listinfo/hardwarehacking
