I do really like the flashing screen idea. 
"sourcecode is not public, but just place your (optical) programmer facing the screen and click on program now"

hmmm... 
 
for the hardware you only need 3 phototransistors  , 3 transistors, 3 resistors, and a power supply with vpp, vcc, and gnd.

phototransistors control vpp, clock and data in.

Juan Cubillo 
-----Original Message-----
From: "Hazelwood Lyle"<LHazelwood@mfgnc.com>
Sent: 2/21/2006 2:38:48 PM
To: "Microcontroller discussion list - Public."<piclist@mit.edu>
Cc: 
Subject: RE: [PIC]: most convoluted way to enter a program into a PIC


> > about the ultimate convoluted bootloader: the 
> > non-electrical contacts
> > bootloader. It uses temperature cycling to enter the data! 

> And the tool used to affect the heating is a magnifying 
> glass, using the 
> sun as power source ;-)
> 

OK, I like the heating idea, but let's try to make our existing
tools more useful.
Some members here have hacked better temp controls into toaster 
ovens for soldering work..
Would that oven now qualify as a "gang programmer"?

just shove a bunch of boards into the oven and download the
code into the oven controller..?

Maybe even write up procedures for doing field upgrades with
a propane torch and a stopwatch.

:-)

I like it, it passes the "suitably insane" criteria nicely.

Lyle

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