The Robolympics are coming up. Interesting list of events, and last year's was quite a blast... Just so you know!
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.
The Robolympics are coming up. Interesting list of events, and last year's was quite a blast... Just so you know!
"What gives, where are all the newsposts this week?" Well, let me tell you. We've been running around like crazy people (which comes disturbingly easy to most of us) getting ready for the Vancouver Maker Faire, which many of our staff (including your humble poster of news) will be attending. So you'll have to hang […]
Wheee! It's finally outta my hair - the Sumovore PIC Brainboard now available to all you microcontroller fans that insist on programmable robots. Complete with a 5 pin and RJ11-6 port, you can use practically all PIC programming tools and hardware (or build your own programming cable as detailled in the instruction) to put your […]
Not just another *uino clone, as this uses a 32-bit Atmel AT91SAM7X ARM microcontroller. Sure, it uses the same form factor (well, except for the breadboard-friendly mini version), but the Netduino uses the .NET micro framework. What's that mean? Well, you're using a hugely more capable microcontroller (8-bit vs 32 bit), with much more memory […]
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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.