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Here's a little makeover of an inexpensive aftermarket car seat heating pad that stopped working.
Designed to activate and warm up when sat upon, the electronics face a fair amount of abuse: since the seat is a soft frame, the wires inside constantly move and flex with the body. They are also subject to harsh temperature changes with frequent (very) cold weather heating and cooling cycles, adding to a situation ripe for a malfunction, which happened to one of our staff when he couldn't warm up his tush one cold Canadian morning...
Dragging it into the lab, we peeled back the covers to discover the usual and not-so-usual suspects.
The old wires had a PVC jacket that had dried out and cracked.
The wires would then flex at these cracks and break:
We replaced those wires with our GroovyNoodle silicone wire, which is able to resist flexing and temperature fluctuations very well.
Here's a picture of the sketchy activation switch we found inside the bottom part of the seat. It's designed to close when under "bum load", and directly pass power to the heating coils. We're not experts at auto-grade accessory manufacturing, but we were surprised that it wasn't a logic "bum-detected" switch that triggered a suitable relay or FET elsewhere. And the lack of a thermal reset fuse surprised us.
All broken wires replaced! Almost all the PVC jacket wire had cracked and disintegrated, so we replaced it with our better-quality GroovyNoodle silicone wire. This wire is extremely flexible, high strand count, and a temperature-ignoring silicon jacket. Perfect for inside this car seat heater.
All necessary repairs and upgrades were done just in time for the next stretch of (very much) cold Canadian winter.
All your text are belong to us.
Hey Everyone, Sometimes the stars align and everything goes right... however, this was not the case for our recent sales flyer. Despite our best efforts to cancel/delay/time travel, it was sent out to the local Calgary area today. While we are still honoring the sale (with an extension until April 12th while supplies last), we […]
Adafruit USB LiIon/LiPoly charger - v1.2 CAD 16.50 / USD 12.50 Add a high-capacity rechargeable power supply to your project easily! HDMI Male to VGA With Audio HD Video Adapter CAD 21.50 / USD 15.99 Ever wanted to add HDMI to an older VGA monitor? This does it with audio breakout! Lithium Ion Battery - […]
Lets contabulate! And that means, as I recently learned, to cover with boards, which in our case are - breadboards. Today's breadboard coverage is only partial, as we have other stuff to show off too: Synapse "Getting Started" Transmitter Bundle $49.99 Add a Wii Nunchuck and battery to this bundle and you'll have a simple […]
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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.