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| Thread ID: 59350 | 2005-06-29 07:51:00 | Unusual PC Construction Project -- Help needed | Chemical Ali (118) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 367953 | 2005-06-29 11:08:00 | What about this home made portable laptop made by one of the Porritts a few years ago, when laptops were quite expensive, even in Canada. Portable_Laptop.jpg (www.sal.neoburn.net)Your far flung relative must be quite famous, I only got shown that same picture a couple of days ago ;) Must be doing the rounds. :p |
Jen (38) | ||
| 367954 | 2005-06-29 12:42:00 | Terry: How does these 'momentary contact' switches work and how would I wire/connect it to the motherboard pins? | Chemical Ali (118) | ||
| 367955 | 2005-06-29 15:18:00 | Heres what you would need Here (www.dse.co.nz) According to DSE depending on how you solder it it will be either set to 'on' or 'off' based on which pins you solder. MY GUESS is solder the two outer pins while leaving the middle untouched to the two wires belonging to the old Power switch. I do not think it would matter which way around you solder them. If you can get your hands on a multi-meter with a continuity tester on it, you should be able to find out which pins to use. Multi-meter Here with continuity tester (www.dse.co.nz), Else try the Warehouse for a basic one Good Luck |
bob_doe_nz (92) | ||
| 367956 | 2005-06-29 21:24:00 | Terry: How does these 'momentary contact' switches work and how would I wire/connect it to the motherboard pins? I suggest you use the connector plugs and wires from the old computer to connect to the reset and power on/off pins (which have a 0.1inch spacing) on the motherboard, extending them as neccessary with hook up wire to the new switches. Often these sort of connectors abound in computer buffs junk boxes :) The LED connectors are the same size. It may of course be possible to use the existing switches, and just extend the wiring, but some on/off switches may rely on the front cover to hold things in place. If the original switches are not satisfactory or easily re-mountable, then Bobs suggestions would be the way to go. I'm sure a visit to the local tip, or to the rubbish bin of your local friendly computer shop will yield all the bits you need. |
Terry Porritt (14) | ||
| 367957 | 2005-06-30 01:56:00 | Bob's suggestion for connection is wrong, however . The common tag is almost always the centre one . That DSE push button will, I'm sure, be like that . It will probably have "NO" and "NC" stamped beside the other tags . NO=normally open (the one you want); NC=normally closed . You can probably find better looking momentary contact buttons . In the early days of minicomputers (long before IBM PCs were dreamed of) the head design engineer of one company became fed up with "his" computer being taken from his desk to complete an urgent order . He finally grabbed a set of components and screwed a complete working computer to the side of his desk with no case . That one he managed to keep . |
Graham L (2) | ||
| 367958 | 2005-06-30 04:08:00 | Bob's suggestion for connection is wrong, however. The common tag is almost always the centre one. That DSE push button will, I'm sure, be like that. It will probably have "NO" and "NC" stamped beside the other tags. NO=normally open (the one you want); NC=normally closed. I thought so... :) |
bob_doe_nz (92) | ||
| 367959 | 2005-06-30 14:02:00 | Ive done it before with a non-magnetised Screwdriver. Just short the two pin-headers for a split second and it'll whirr into life :) | Chilling_Silence (9) | ||
| 367960 | 2005-07-01 05:08:00 | A magnetised screwdriver will work even better. :) It orients the electron flow uniformly. (If Hi Fi freaks can hear magic differences from using $700 power cords, I can create myths about using screwdrivers as switches :thumbs: ). But that's a bit like using a screwdriver as a chisel, or a wrench as a hammer. The best momentary contact switch is a switch. |
Graham L (2) | ||
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