Comments on: PCB milling hell sunday extra

By: Kyle

Kyle — Wed, 02 Apr 2008 01:32:35 +0000

Getting a boarduino would require a separate programmer…

By: James Jarvis

James Jarvis — Tue, 01 Apr 2008 22:06:02 +0000

Since you have a laser cutter, there is a relatively easy way to make boards. Spray your copper clad board with a decent spray paint. Then use your laser to burn off the spray paintin areas where you want your board etched. Then etch as normal. To make drilling easier you can even put little tiny pin points in the center of your through hole holes. You’ll get a little depression in the copper and it will be perfect for giding your hand held dremel tool in to the center of the pad.

By: rmrubin

rmrubin — Tue, 01 Apr 2008 04:32:13 +0000

!!! WARNING PCB-GCODE USER !!!
it ignores Z feed rates for plunges in traces milling. Thats right, you just plunged that $40 tool into copper and glass at lateral feed speeds. this is possibly only try when set to EMC mode.

G01 Z-0.00500 F8.00000

W T F has been posted to the pcb-gcode yahoo group.

Also, its drill file formatting errors out for a couple reasons.

But yeah besides that its awesome. use find and replace in the gcode files, ninjas.

By: Ken_S.

Ken_S. — Tue, 01 Apr 2008 02:56:07 +0000

On “Field Day” (an annual Ham Radio Event) about two years ago, the president of the club was telling us he did that many years ago… he said “Would you like a muff-burger with that?” then it suddenly dawned on him how much trouble he could get in and has never done it since.

By: DCFluX

DCFluX — Tue, 01 Apr 2008 02:29:57 +0000

Oh and arent CB’s AM and Drive Throughs FM?

By: DCFluX

DCFluX — Tue, 01 Apr 2008 02:24:56 +0000

Wow, and I thought I was nerdy when I bought a copy of Thunder run from region 2 just because it was on DVD.

But in my defense it was filmed in the area where I live, whats your excuse?

By: chr0n1c

chr0n1c — Tue, 01 Apr 2008 01:43:10 +0000

yo, if you can send me a dxf of the pcb i’ll do a mastercam toolpath for you in generic fanuc g-codes… it (the resulting code) works great in my emc2 machine controls.

By: ...

... — Tue, 01 Apr 2008 01:36:10 +0000

good luck trying to get to get your CB to transmit at any reasonable amount of power at 3 times the frequency it was designed for… Or finding a 6.53MHz crystal in ‘any appliance with a heater’…

Also, I am somewhat surprised that there isn’t more of an outrage about people doing this and ‘giving hacking a bad name’–hey lets see if we can get some poor kid fired by putting words in his mouth!

By: jayell

jayell — Mon, 31 Mar 2008 21:31:36 +0000

kindly disregard my last post. I’ve been had.
there are easier (and more expensive) ways to do this, but they’re all still illegal.

good prank, though.

By: jayell

jayell — Mon, 31 Mar 2008 20:56:41 +0000

I knew something was up when they said you couldn’t buy the crystals (see: Digikey) and had to get them from toasters.

I take it that even if you had the right crystal, putting it in a CB wouldn’t work either? I was really hoping to be able to do this (and feel bad for all the suckers who took their toasters apart).

By: What

What — Mon, 31 Mar 2008 20:10:49 +0000

Srilyk, this hack wont work. Ever.

http://www.notla.com/archives/2008/03/sacrificial-toasters/

By: Liam

Liam — Mon, 31 Mar 2008 20:01:27 +0000

Re: the video -
Someone explain this to me (I’m not an electrical engineer). CBs operate around 27 MHz. The crystal inside is 1.73 MHz according to them. The new crystal is 6.5536, which, when divided by 1.73, yields 3.788. 3.788 * 27 = 102 MHz. Does this mean that, for some reason, the circuit is nonlinear? Also, why are the leads of the crystal in the toaster so huge? Would the filters in the CB work at all in that frequency range?

There seem to be a lot of problems with this, but I’m really hoping it’s true.

By: FRKJ

FRKJ — Mon, 31 Mar 2008 19:20:38 +0000

At Jim:

The problem with that is that copper is such a good thermal conductor it will simply dissipate the heat and not burn through it. Would be nice though..

By: srilyk

srilyk — Mon, 31 Mar 2008 18:54:18 +0000

Heh… I watched that CB video… it looked pretty amusing.

That’s actually kind of frightening though, if someone creepy got a hold of that info (and their victim didn’t).

What would be rather fun to do with that hack, though, is add a switch to the CB (or wire to an existing switch if it’s available) and put both crystals in the radio. Voila, now you have regular CB frequencies and the FF frequencies with just the flick of a switch. (I’m assuming the spike from switching across them wouldn’t be too harmful).

By: jason

jason — Mon, 31 Mar 2008 15:10:45 +0000

you may want to check into a vacuum clamp for a table. woodworkers use ‘em for routing sometimes. they look fairly easy to make, and assuming you’ve got a sufficiently large air compressor handy it shouldn’t break the bank too badly to add a vacuum pump.