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Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details. |
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27th Nov 2016, 4:33 pm | #1 |
Guest
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A fast 'o' slow meter for my Magneta PO36 clock
This is to be a meter indicating how fast or slow my clock is with respect to MSF, it will have a micro and an MSF receiver in it and display the time difference on a meter.
Having received a meter for the project, many thanks to mole42uk, I have made the box to put it all in but I have a quandary, which way round? The switch shewn is to set it in +/- 5 second or +/- 25 second ranges. So... which way round? Last edited by Guest; 27th Nov 2016 at 4:34 pm. Reason: added a space |
27th Nov 2016, 5:17 pm | #2 |
Hexode
Join Date: Jul 2009
Location: Mablethorpe, Lincolnshire, UK.
Posts: 286
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Re: A fast 'o' slow meter for my Magneta PO36 clock
A very interesting little project. Did you make the scale yourself, or was it already in the meter?
Personally, I would have the needle swinging to the right to indicate fast, as this is the same direction the clock hands would move if they were fast. Do let us know how you get on with this one. By the way, I wondered what "DY" was to the left of the meter, then I realised, "HP" upside down! Mark. Last edited by 8 Tracker; 27th Nov 2016 at 5:39 pm. |
27th Nov 2016, 5:28 pm | #3 | ||
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Re: A fast 'o' slow meter for my Magneta PO36 clock
Quote:
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27th Nov 2016, 5:54 pm | #4 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Re: A fast 'o' slow meter for my Magneta PO36 clock
I must have misunderstood something, it sounds too obvious If the switch selects the time range of the meter, have it so dolly-up selects the range on the upper scale, dolly down for the lower scale.
David
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27th Nov 2016, 6:29 pm | #5 | |
Guest
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Re: A fast 'o' slow meter for my Magneta PO36 clock
Quote:
Back to the original question (badly phrased by me), switch on the right of left (as per photos), they look the same to me but I am sure some industrial designer will know the correct side for it to be on. A bit pernickety I know, may as well get it right now rather than look at it later and think 'is that the right way round'? |
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27th Nov 2016, 6:57 pm | #6 |
Nonode
Join Date: May 2007
Location: Preston, Lancashire, UK.
Posts: 2,511
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Re: A fast 'o' slow meter for my Magneta PO36 clock
I think it depends on whether you are right or left-handed, so you don't obscure the meter with the hand you would normally use to operate the switch.
Andy |
27th Nov 2016, 7:16 pm | #7 |
Hexode
Join Date: Jul 2009
Location: Mablethorpe, Lincolnshire, UK.
Posts: 286
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Re: A fast 'o' slow meter for my Magneta PO36 clock
Now I understand! I agree with Andy. I am right handed, so would naturally put the switch on the right.
Mark. |
27th Nov 2016, 7:46 pm | #8 |
Guest
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Re: A fast 'o' slow meter for my Magneta PO36 clock
I am swinging to the right too, will decide tomorrow and then you get to see the insides.
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28th Nov 2016, 4:16 pm | #9 |
Guest
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Re: A fast 'o' slow meter for my Magneta PO36 clock
Well, it is done, bit slack at work did the programming this morning. The micro is a "Start USB" http://www.mikroe.com/startusb/pic/ great little board, comes with a USB bootloader, no need for a programmer and code complied in Microchips IDE (Integrated Development Environment, it's free to as are the C compliers) just loads and runs (even the USB code, must be a clever bootloader). 5V regulator is from my old projects stash.
The pictures show the insides, the outside (showing 1.5 seconds fast) and a view of the whole clock. I use american coins to regulate the pendulum, much less likely to get nicked for want of 10p or so. |
28th Nov 2016, 4:21 pm | #10 |
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Re: A fast 'o' slow meter for my Magneta PO36 clock
BTW if anyone want's the code you are more than welcome. It's engineers code not programmers! Attached the lot for fun.
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28th Nov 2016, 5:36 pm | #11 |
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Join Date: Mar 2012
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Re: A fast 'o' slow meter for my Magneta PO36 clock
A chrono-swingometer! You just need to book Peter Snow, now...
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |