The anti🚫-derailment🚃 & thread🧵 hijacking🔫 thread🧵 ⁉

Is that you :partying_face: blowing your own horn? :rofl:


and im proud of it :stuck_out_tongue:



Happy Birthday @ItaBeAight :slight_smile:


Thank you!

How did you?…. I didn’t think I entered that anywhere.

Because it’s mine too!!! Everyone who shares a both day just knows. That’s what all these dang chips are for. Tracking each other - didn’t you get the buzz for mine??? you might wanna check…

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Hells yeah! I forgot about that, old age is setting in.

Happy Birthday my birthday brother!


Any rough guesses at wattage I would need for a trickle charger to make up for a XACv2?

Interior of glass will likely take half off the top,
Then you have a 24 draw, and maybe 8 hours of available sunlight

It’s what? 200 milliamps? Call it 5 amps/day. 5 amps * 12v = 60 watts/day. 60/8 hours = 7.5 watts/hour. I’d oversize it to a 20 watt panel because you’re never really gonna get peak power.

I thought 100ma

Meh, solar is not a prospect I like,

Seems like a bandaid fix, why add a system to charge the battery back up… instead of just limiting its depletion

I need to figure out a way to turn it on and off from outside the car… there’s a small trim window forward of my side mirror, I could maybe drill a hole, and put a small momentary switch perhaps

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Oh, yeah. My bad. Well, another thing to consider is that your car is already bleeding power on its own… So you’re solving more than one problem. If you’re the sort of person that plans on leaving your car unattended for a week or more, it’s a great solution. If not… Well, you might not need to worry about the power loss after all.

That’s fair,

Just seems like the ability to turn the reader on for 60 second cycle when you need it would be a more elegant concept

I’ve had previous cars that if you pulled the handle on a locked door, the interior would illuminate for 1-3 minutes… that would be perfect, but my fiesta has cut that corner sadly

Totally. That was my plan with a PIR sensor but then you have to seal the hole… Think about car washes. They tend to use pressure washers. Nothing you seal it with will hold it up to thousands of PSI. That was the big nail in the coffin for me. (Read: I’m too lazy to hand wash my car).

The door handle thing is an interesting idea… You could potentially use a momentary switch in there… But you’d need to use a delay off timer, I think, because holding the handle while trying to use the XAC will prevent the lock from actuating.

has anyone actually tried a PIR sensor positioned directly up to the back of the glass in a car? it’s not like it has to work at 15 feet or anything… just a few cm is all that is really necessary.

YouTube test video. YMMV.

Edit: I would happily do a proper test but I won’t be home for a couple months.

Edit 2: I suppose it would work if you rested your hand on the window long enough because it could heat it up enough to be detected.

The xAC V2= 60mA Idle 100mA Operating

Even better

The problem here is that the “science” being done in the video is nothing like what is being proposed… “glass” does not reflect IR… only certain types do. The “glass” used was super thick and obviously not UV filter car glass (which I think passes IR just fine to help avoid turning the car into a solar oven). The sensor is fully encased in its own plastic casing with its own index of refraction etc. and I’m not proposing such a module simply be placed inside the car… what I’m saying is you silicone glue the actual sensor right up to the back of the glass;


That thing… put that right up against the back of the glass and test for motion detection at 2cm - 10cm away with a human hand… my bet is it should work… but we won’t know until someone tests.

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100% agree with more testing testing. My intention with the link wasn’t “this won’t work.” It just seems to jive with IR not wanting to pass through insulators–like glass. Sorry for the confusion.

Edit : a contactless thermometer might be a good way to test this without assembling something.

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Totally understand. I can get spicy sometimes when it comes to multitasking… :wink: