Recent content by David_Reynolds

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    Switching issues

    Hi all, I just dived in here again , can I add my two penneth to this. From what I know about the tilt switch methodology I would like to ask if the switch is handable, since the best way to set it is in N/C is satisfied and therefore when it tilts and breaks contact, the drive operates and...
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    28X2 to drive a Rev-Ed 4x20 OLED to tell the time with a DS3231

    I am being stupid again. You are going to stick it with a permanent magnet on the end of an actuator, then pull it off when the power returns and the clock timer matches the stored time, I get it. you will have plenty of battery power to do this small thing, then once it is done the only...
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    28X2 to drive a Rev-Ed 4x20 OLED to tell the time with a DS3231

    The grabbing of the pendulem would need calibration, this being letting the actuator run for say 1 second and stop, check that the pendulem is still swinging from its sensor then repeat until there is no more pendulem signal, count how many 1 seconds was needed to do this and save that in eeprom...
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    Switching issues

    There are also 2 sides to a PCB so it may be possible to fit the chip on one side and all the support to the opposite side. I have surface mounted standard chips by bending the legs out and surface soldering them, it avoids through holes with pins sticking out, after all the cost of the plated...
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    Tilt switch test rig

    I worked for a firm who had deployed "Rugby Clock Receivers" You have got to watch what you are buying, I did not know. and bought the same thing once. Now I want nothing from a region that gives us so much disdain. Sorry I am now running off topic.
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    Tilt switch test rig

    Thanks for the update on that Phil,,, It will have been stolen by them, so I will call it by, the "Rugby Signal stolen by the Cumbrians" eh, eh, maybe sooner or later they will be shamed into giving it back! There is always someone waiting to take away what you have got.
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    Tilt switch test rig

    Yes, the carbonised surface do to the switch dithering about, I would imagine, relays used for DC control burn a hell of a lot if they are not suppressed in the right manner. It appears bit by bit, over thousands of cycles, and does not need a high current to do it. I think the only really...
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    Tilt switch test rig

    What did you do to stop the extra pulses? Any snubber across the switch? Just enough to keep the signal on for a couple of micros more?
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    Tilt switch test rig

    There you go then, design a regulator using Picaxe chip, a real time clock or one of those that gets the rugby signal and keep it down to three hundred quid. I note their concerns about the spring pressure being all over the place but they can always choose a longer spring with more turns...
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    Tilt switch test rig

    No Rampz , I meant that this is so basic it does not lift a sustaining lever to provide power for a few seconds like the human winder does, therefore the clock power is removed for the time that the spring lever arm takes to move it's travel. The spring tension will not be a problem if it is...
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    Tilt switch test rig

    That knackered spring could be replaced by a nice gas strut as well.
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    Tilt switch test rig

    That mechanism looks a bit worn to me!
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    Tilt switch test rig

    Phil. the weights are kept in the very expensive electric winder albeit that they are smaller because of the larger pulley drum. The format that is chosen by the company Rampz is negotiating with, is to do away with them and just pulses against a spring to give a few minutes of power to...
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    Tilt switch test rig

    Yes Rampz, I get that it would be a real problem if the drive kept engaging and driving itself further and further away but it was not moving with a signal that should have made it move, It was being masked, that seems IMHO not to the answer . The company chose to use a bang bang control...
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    Tilt switch test rig

    Hi, Rampz , I see the vibration issue and it is exactly what you would expect from a tilt switch that is only just off. Since you are going to reverse the situation to a opening switch this should stop happening, I am guessing this was the thought when the timer was originally fitted, but in...
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