Dan McMahill wrote:
Darrell Harmon wrote:
Stephen Meier wrote:
Let me echo ...hello.....hello....hello...
I have had very complex board built with these tools. If the boards
anyone else is trying to build dont work it is probably do to the
manufacturing process of the boards and not due to the design tools.
Hey if you can attach a bga with a toaster more power to you (or the
oven got the bread the right collor of brown). using companies that
are good at depositing 900 pin bgas has been successfull.
Steve Meier
I did successfully attach the BGA using a $20 toaster oven. I used a
MAX6675 thermocouple to SPI converter connected to the parallel port
of my laptop along with a relay to switch the power to the oven. I
set the oven on broil and got mostly infrared heating. I can post
the temperature profiles if anyone is interested.
I'd like to see the profile. Now when you outfit your toaster oven
with ethernet, then I'll be impressed ;) Still, thats pretty cool. I
take it that you're actually regulating temperature not just
monitoring it?
-Dan
It will probably be late Saturday night or Sunday afternoon, but I will
post the profiles, schematics and code (none of it is on this
computer). I just used simple thermostatic control (no PWM) and it
stayed within 2 degrees C of where I wanted it to be when it could keep
up. I only got about 0.5 to 1 degree per second. I may move the lower
heating element (quartz tube) up to the top to double my heating power
or even buy a second oven for more elements. Even with this slow
heating, not even the connectors were damaged.
--
Darrell Harmon
100x100mm SBC running GNU/Linux:
http://dlharmon.com/sbc.html
