Homebrew PCBs

As an experiment, I'm designing a home-made single-sided PCB for a
Philips LPC2106 ARM device. It has an LQFP48 package (0.5 mm pin
spacing). I've just made a test PCB (no tracks), there were no shorts
visible between the pads so it looks like my technique is viable for
fine-pitch devices.

I used the rather expensive JetStar Premium film in my Epson Photo 780
inkjet printer, UV exposure onto Economy Fotoboard PCB material, and
FeCl3 etchant.

Although the Philips LPC21xx chips can run at 60 MHz, all the
high-speed stuff is inside the chip, so it should work OK on a simple
single-sided PCB, given adequate decoupling for the 1.8 V and 3.3 V
supplies. They work fine on properly designed double-sided PCBs.

Leon