The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

Category: Home Ec

Things around the home & hearth

  • FitBit Charge 5 Reboot

    FitBit Charge 5 Reboot

    Wearing my FitBIt Charge 5 tracker in the shower without activating its Water Lock feature occasionally produces odd results, but the most recent mishap ventured deep into the peculiar:

    Jammed FitBit Charge 5
    Jammed FitBit Charge 5

    Its complete lack of buttons makes the thing completely waterproof, but also means it cannot continue when the touch / swipe interface gets horribly confused.

    The recovery process requires snapping it onto its USB charging cable, then pressing the nearly invisible button embedded in the USB connector shell three times, with one second between each press: click hippopotamus click hippopotamus click.

    Then it restarts / reboots and eventually all is well again.

    Perhaps I can now recall the magic incantation without digging through the online help again, because I am certainly not going to suddenly remember to do the Water Lock dance before showering.

  • Gooseneck LED: First Failure

    Gooseneck LED: First Failure

    Twelve years ago I rebuilt a gooseneck lamp to carry a surplus LED head:

    Finished LED Floodlight
    Finished LED Floodlight

    One of its three LEDs just failed:

    LED Gooseneck lamp - first failure
    LED Gooseneck lamp – first failure

    Given that I very deliberately glued the whole thing together in the sure knowledge “the lamp should outlast me” and much later built the other LED head into a desk lamp, well, it’s like that and that’s the way it is.

    The Sherline will be just a little bit dimmer in all those photos …

  • Thanks for the Notification

    This year’s MVP health plan has a different “OTC Benefit” than last year, even though MVP is contracting with the same company to provide what seems to be essentially the same benefit.

    This arrived half a year after the new OTC benefit card showed up:

    MVP OTC Card Expiry
    MVP OTC Card Expiry

    I suppose somebody noticed MVP hadn’t gotten around to telling us they were cancelling the old card, despite its Valid Thru 12/26 notation. Well, the card isn’t exactly cancelled, it just stopped working when all the money evaporated.

    This not being my first ride in this particular rodeo, I spent all those sweet OTC benny bucks days after they become valid on the first day of every quarter-year, buying up my stock of overpriced OTC stuff.

    In theory, you could buy the stuff elsewhere, but you had to scan each item in the retail store using the worst app imaginable to determine its eligibility and coverage. If the store was in a no-wireless-data phone zone: too bad, so sad.

    This year’s program is simpler: you must buy everything from the sole-source supplier, even though it costs four times more than the comparable item at, say, Walmart or even Amazon.

  • Kenmore 362.75581890 Oven Igniter: Third Contestant

    Kenmore 362.75581890 Oven Igniter: Third Contestant

    Although the oven igniter I just installed worked, its 3.0 A current fell below the gas valve’s minimum 3.3 A, which, based on past experience, suggested it would fail in short order. Just to see what happened, I sent a note to the seller, who offered a warranty swap and, after a bit of fiddling, the replacement arrived:

    Oven Igniter B - 3.3 A initial current
    Oven Igniter B – 3.3 A initial current

    This one draws exactly 3.3 A, so it just barely meets both its product description and the gas valve’s minimum current.

    We’ll see how long this lasts …

  • Sunbeam Clothes Iron Salvage

    Sunbeam Clothes Iron Salvage

    For just under twenty bucks, Mary has a new clothes iron and I harvested the heating element from the longsuffering Sunbeam iron:

    Sunbeam clothes iron - heater connections
    Sunbeam clothes iron – heater connections

    Per the notations:

    • AC Line enters on middle terminal to thermostat
    • Thermostat controlled Line on left terminal to heater
    • AC Neutral to heater terminal on right

    The heater measures 12.6 Ω cold, so 9.5 A → 1.1 kW.

    The iron had an insulating sleeve on the thermostat shaft capped with a plastic dial, which makes perfect sense for something in contact with the hot side of the AC power cord.

    The IC date codes suggest it’s been around since 2002, so it’s about two decades old. In that time, one of the two electrolytic capacitors succumbed to the plague:

    Sunbeam clothes iron - capacitor plague
    Sunbeam clothes iron – capacitor plague

    I think the relay and electronics implemented the iron’s timed shutoff function, but it does seem rather complex for that.

  • Eyeglass Case Padding Redux

    Eyeglass Case Padding Redux

    Confronted with a nice metal eyeglass case that had lost its original liner, I traced the outline on paper and scanned it:

    Metal case outline
    Metal case outline

    Unlike the plastic Zenni cases, this one has nice straight edges, so:

    • Eyeball a LightBurn rectangle over the traced image
    • Round the corners to suit
    • Shrink it by a few millimeters to make it fit inside

    Then:

    • Add a perimeter line offset by the 6 mm required to cover the sides
    • Draw a dart in each corner to allow for bending the foam
    • Set the perimeter priority to 1 so it cuts last
    • Put the original outline to a tool layer to remind me how to do this the next time around

    Which looks like this:

    Metal case pad - LightBurn layout
    Metal case pad – LightBurn layout

    Then Fire The Laser into a sheet of EVA foam:

    Metal eyeglass case - padding cut
    Metal eyeglass case – padding cut

    Stuff it into the case, do another one in brown, and the result looks kinda like it should:

    Metal eyeglass case - padding installed
    Metal eyeglass case – padding installed

    That was easy …

  • Kenmore 362.75581890 Oven Igniter: That Didn’t Take Long

    Kenmore 362.75581890 Oven Igniter: That Didn’t Take Long

    So the oven igniter I installed in January failed to ignite the oven when its current draw fell far enough below the valve’s 3.3 A minimum:

    Oven Igniter - 2.3 A current
    Oven Igniter – 2.3 A current

    Of course, the seller no longer offers that particular igniter.

    I described the problem:

    The igniter just failed. The oven gas valve requires 3.3 to 3.6 amps to open, but this igniter now draws only 2.3 amps, as shown by the clamp-on current meter.

    Because of the low current, the valve does not open and the oven does not heat.

    The igniter should last more than five months!
    How do I go about getting a replacement or a refund?
    Thanks …

    Which generated pretty much the reply you’d expect:

    We are very sorry, because your product is 5 months from the date of purchase, we cannot offer you a refund.
    Please purchase another replacement.

    Which made me a bit salty:

    ” the best quality for greater power connection, higher load and longer service life “

    ” We stand by our products, and our customers are our focus as a business. If you have any quality problem, please contact Funmit customer service team in time, and we will try our best to solve your problems “

    So five months is “longer service life” with “the best quality”.

    Bonus: now I understand what “try our best” means, too.

    But to no avail:

    Have a nice day! We are glad to serve you.
    We are very sorry that you are not satisfied with our products.
    Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way.
    However, the product has passed the return and exchange period, so it cannot provide you with a warranty.
    If you have other questions, please contact us in time, we will serve you wholeheartedly. Thank you.
    Sincere wishes,
    –By Funmit

    So I bought a slightly more expensive igniter from a different randomly named seller that draws a slightly under-spec but entirely typical 3 A:

    Oven Igniter - 3.0 A initial current
    Oven Igniter – 3.0 A initial current

    This one, however, allegedly comes with a one year warranty:

    Quality you can Trust – All Snap Products are made with premium materials and are tested so they last
    Buy with Confidence – Snap Supply Parts always come with a 1 Year Warranty

    Which surely requires the seller remaining in business until then.

    We shall see how this works out.