Thanks for the tip Derek. I have placed an order with ITead, so fingers crossed I got it all right.
I agree with you on the gerber viewer in gEDA, I prefer it over the one in Kicad. Kicad has an advantage in that it is cross platform, gEDA only runs on Linux, but I think both programs will read each others format.
I want to do a new slave board. I am thinking of a small board of 10 x 10 cm, the largest size that ITead does. At $28 for 10 boards the price is very good. To get as many slaves as possible on a board, I am thinking of going for a SMT design. I am working on an unrelated project and want to try reflow soldering using a cheap toaster oven. If that project works out I will set my sights on a small multi-slave board.
The TellyMate cheat sheet is a good idea (Derek posted about this on the pb slave thread). I haven't been having very much luck with cheap 3.5 inch lcds and the SV2000 chip. The bottom of my display is a bit garbaged. I did send my master and display to Peter a while back for him to try on his setup and he confirmed my display was causing the problem. It seems the SV2000 and some of the cheap lcd displays don't play together nicely. The same display does work well with the Tellymate though, which seems to indicate that the Tellymate has a cleaner signal. I probably won't worry about it to much until the next version of the master is available.
On a side note, I have been looking recently at the Parallax Propeller. It is an interesting chip that runs 8 parallel cores (Parallax calls them
cogs). Each cog can run an independent task. So one cog can look after cell voltage measurements, another the user interface, etc. Back to what got me started on the Propeller chip, built in video generator.
Composite video and even VGA can be directly output by the chip, no Tellymate or SV2000 needed. I know Peter won't like the idea of a completely different chip for the master, after all we have only just got the hang of the pics. But there is a basic complier availible which may aid in porting existing code and some neat products as well. Have a look at the Spin Studio range of boards and the View Port software at this site
http://ucontroller.com/index.html.