Posted on 04/17/2013 9:29:17 AM PDT by swamp40
Anyone recognize the electronics found inside the Boston bombs?
I design electronics for a living, so these boards caught my attention.
The green board has some round corner notches. (Those are to avoid the screw posts in a rectangular enclosure.)
While not exactly unusual, they ARE distinctive.
I'm guessing they are some kind of remote control electronics from a place like ebay, especially since the battery used:
The green pcb looks similar, but not exactly like an E-flite Blade CP (RC helicopter)- so I'm guessing it's a different model from E-flite.
Google Image Search for Blade CP pcb
Pretty common on ebay.
Go here...scroll have or more way down.....flags in front...guy stooping in doorway over black bag...has cap on? Might be the one.
The stooping guy I am seeing appears to be after the explosion still with his bag.
Yes....I saw that after the fact....but the news is showing the photos of the guy with shattered clothes running
Opps...Alert...ARREST HAS BEEN MADE!
Cnn saying...arrest has been made...dark skin man seen placing bag and walking away....from Lord and Taylor video.
Trying to find those...but someone said it was from the second bomb site....???? Well...we’ll know in time...
FBI bomb experts at the FBI Academy in Quantico, Va., will try to rebuild the devices from fragments that include a circuit board that indicated the bombs were detonated on a timer, rather than remote control.
Whew,,, I see a TI part,,, glad it wasnt my employer’s . . .
Really? Where do you see that?
that is a capacitor, not a battery
Radio control receiver circuit, voltage regulator (w/cap for the regulator), and Nickel metal hydride (sub C size, 7.2 v, 3000 milliampere-hour) secondary type battery. Tomaya connector.
You don’t need such a battery for the receiver circuit. The regulator helps to provide the increased power to the motor while steping down the voltage for the receiver. so looks like person didn’t know how to use just the receiver circuit with a lower powered battery.
good for RC cars and robots.
NiMH has no memory effect compared to old NiCad. Clearly Not a Lithium poly as some news sources said.
So very sad and sick to see toy parts being used for such a horrible thing.
Cant find it now,,, I may have been mistaken,,, or on the wrong pic..
It’s from the My Little Camel play set.
Reddit users are doing the same analysis, and someone posted this.
I'm pretty sure this is the blue board from Boston.
Why you need a servo controller for a bomb is beyond me, but here it is.
That picture is not real.
The ESC stands for Electronic Speed Control.
It's an RC car DC motor controller, with a brake.
The three position cable plugs into the RF board.
If that zipper pull is not attached to backpack of interest, it could have come from any backpack in the vicinity. I don’t understand why authorities think this is THE ONE. What do you think?
Hard to say for sure - but it IS broken, and laying with bb’s and nails.
I mostly posted it as corroboration with pictures of possible suspects in the crowd.
Maybe used to amplify the timer signal to sufficient energy to trigger or ignite the explosion.
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