- Battery Less Smoke Detectors - 3 Updates
- Mechanical paper shredder sensor - 3 Updates
- heavy duty 2sided cardstock printer - 1 Update
| bitrex <user@example.net>: Apr 08 11:13AM -0400 On 4/6/2023 6:24 PM, ehsjr wrote: > The word "hardwired" means they are powered from the > AC mains. (They also include a backup battery.) > Ed Incidentally the laws of the state of Massachusetts requires hardwired smoke detectors in all one and two family homes permitted (i.e. constructed and/or renovated) post 1975, prior to sale or transfer of the property. |
| bitrex <user@example.net>: Apr 08 11:19AM -0400 On 4/6/2023 7:26 PM, Carlos E.R. wrote: > still be out. > The main reason to have the detectors run from battery is precisely to > avoid failures due to failed mains. I doubt any first-world fire code would allow the installation of mains-only smoke detectors, they're going to be either battery only or mains-powered with a battery backup. Some more recent codes don't even want the user to be able to tamper with the battery and the battery-powered units are to be sealed at the factory. |
| Stephen Wolstenholme <stephen.wolstenholme@outlook.com>: Apr 08 04:40PM +0100 >Some more recent codes don't even want the user to be able to tamper >with the battery and the battery-powered units are to be sealed at the >factory. We have a factory sealed unit in the house we moved into seven years ago. It beeps when I burn the toast! |
| bitrex <user@example.net>: Apr 07 05:29PM -0400 This crappy paper shredder uses a mechanical sensor to detect paper inserted, I think how it "works" is the lever arm rotates forward (to the left in the photo) hitting the momentary switch, the motor comes on and the worm gear attached to the driveshaft raises the smooth plate pulling the arm forward again until it hits the switch again, turning the motor off...I'm not sure that's quite right maybe someone could clarify the sequence. Kinda ingenious design when it works right, except in this model it never really did, the motor always spun too long and now it won't auto-detect entirely. The smooth plate likes to slip out of its position, but I'm unsure of its resting position or how tight the set screw above the spring needs to be to fix it (not sure what else could go wrong...) At least until I finish this shredding job and take it to the Goodwill, that is. Pics of the arrangement: <https://imgur.com/a/kuKct9f> |
| "tschw...@aol.com" <tschw10117@aol.com>: Apr 07 07:20PM -0700 On Friday, April 7, 2023 at 4:29:07 PM UTC-5, bitrex wrote: > the Goodwill, that is. > Pics of the arrangement: > <https://imgur.com/a/kuKct9f> Try a good cleaning before you toss it. Maybe the switch is full of paper dust. |
| bitrex <user@example.net>: Apr 08 11:23AM -0400 >> Pics of the arrangement: >> <https://imgur.com/a/kuKct9f> > Try a good cleaning before you toss it. Maybe the switch is full of paper dust. I'll try that as well but I forgot to mention that the first fail-symptom was the plastic trigger was stuck in the forward position blocking the paper slot, sorry about that! So I think maybe there's something mechanical going on with the arm/gear, also. The lil metallic switch trigger seems to move freely otherwise. |
| Jeff Liebermann <jeffl@cruzio.com>: Apr 07 05:29PM -0700 On Thu, 6 Apr 2023 20:34:39 -0000 (UTC), >The usual HP toner printers that did to sided printing ca 2009 usually >smudged the toner if you did two sided printing in card stock. But the big >5555 hp copier/printer/scanner didn't choke. Smudging means that the rubber feed rollers are slipping. Clean the rollers or stop using high gloss (slippery) cardstock. >How BIG does your printer have to be to reliably do two sided card stock? I could answer that if you would offer a clue as to how many pound cardstock you need to print or what printer you are using. The maximum thickness paper should be in the printer paper handling specification. What's critical for printing on cardboard is whether you have a straight or bent paper path. If the paper path is reasonably straight, it might work. If the paper path bends back onto itself in the form of a "U", you'll be lucky if you get anything over 24 lb to work. Also, your printer driver has some settings which include the paper type and thickness. This setting needs to be set to something resembling the paper you are using. -- Jeff Liebermann jeffl@cruzio.com PO Box 272 http://www.LearnByDestroying.com Ben Lomond CA 95005-0272 Skype: JeffLiebermann AE6KS 831-336-2558 |
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