Forgot to mention that magnets can be used on both sides of a pc board to bend a carbon strip. Flexible resistors strips do exist and have been around for some time.
Check for these magnet applications if you get a chance JABBO.
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Forgot to mention that magnets can be used on both sides of a pc board to bend a carbon strip. Flexible resistors strips do exist and have been around for some time.
Check for these magnet applications if you get a chance JABBO.
These little round magnets(if thats what they are) never touch the mold. When you press a switch they move further away from the mold veritically. I know about the magnets on some boards but this is different. Could probably figure it out if we dug it out but just don't know if I want to go thru that much trouble when we are still going to have to fabricate the switch locations perfectly. Also, in order to put the mold back in a project box, it would have to be longer and wider.
here are the pics...each one of the arms have a metal/magnet in the tips and each one of the arms controls a different function. When a button is pressed the metal tip lifts off the epoxy casing. let me know if you need anymore pics.
How far off the epoxy does the magnet lift before any action? 1/4 in or 1/2 inch?????????
I am guessing that all the circuitry is in the center section right...Any circuitry anywhere else that I can't see?
Need to also verify that the roundies are magnets.
Looks like I see 5.
Follow my thoughts here.
1. cut out the center circuit.
2 build aluminum frame and drill holes center the magnets (5)
3.Mount miniature tubular pull solenoids in holes and glue magnet to solenoid shaft. Position/adjust as required.
Put all this this crap in a project box.
4. Mount switches to control the solenoids.
5. mount LEDs
6. Mount speed pot
It should actually end up smaller than the foot pedal as seen.....Make sense?
Now, what is voltage to foot control?
What everyone think? JABBO? TnT?
1/8" lift off of the epoxy for engagement and yes they are magnets. Tested with the blade from a kitchen knife. The unit I have is a 12v unit. Most of the circuitry is in the epoxy pod right in the middle. Pod measures 4 9/16" x 1 3/4" x 1/16". There are 3 wires running to the speed dial and 4 wires that operate the activation lights on the bottom right. There will be no need to cut the epoxy pod. It is held in by 2 screws.
What I was referring to was the actual voltage supplied to the foot control. Can you measure it?
Solenoids adds more expense, but allows you to arrange switches as you wish and is probably much easier to implement than some mechanical arrangement.
Solenoids will make noise too. Pinball effect......
Costs money to play......
This type solenoid would work. Take 5 solenoids plus box and switches. You looking at about 100 bucks parts plus the cost of foot control...
Your are adding 30+ bucks more cost to the parts by using the solenoids.
P2-1L-12 VDC PULL SOLENOID CONTINOUS DUTY VERY SMALL APPROX 1/2inch TRAVEL Dimensions: 1.315inchL x 0.50inch Dia (0.35inch Threaded Bushing)-Electronic Surplus Inc.Offering obsolete IC's, discretes, motors, relays, switches, pots, and much, much more
JABBO, I do not believe the magnet position is super critical. My house alarm has something similar. I can move a magnet vertical and horizontal to trigger an alarm. Proxy is it.
Jeepster, slide a piece of thin flat plastic between the magnet and the epoxy. It should not bother the function switch operation. Need to know this as the solenoid plunger could rest on the plastic instead of using a return spring. Wouldn't wanna wear a hole in the epoxy circuit with the plunger.
Need to do this with the tm hooked up. Make sure it works properly.
If you don't think this is a good idea, I will stop....