Will the re-breather be to your own design ? interesting project Chris
We used to go up to Oban this time of year good drinking 
canny curry house too , and sometimes have a run over to Capernwray had fun breaking the ice to get in one year 
Rob
Yep.
It's a big project really, no massive bits just a fair few medium sized ones.
PPO2 displayed by a 16x2 LCD display driven by an atmega microcontroller, this on wrist in a little ally box (1atm housing) hopefully getting an ex cave diver miller at one of our subbies to make this bit
As for the unit itself, well it will be an mCCR, so a needle valve to allow in 0-1 l/min of O2 (surface), so the other project is a gas block... O2 and air/trimix inputs... one output... the O2 either by manual addition and needle... the diluent by manual add (just BCD inflator buttons)... this is just a delrin block with a load of drillings and tappings in it.
All that lot will be transferable. I'm not 100% convinced what I'm building for the rest of it yet.
Either a fairly normal "canister" type design like the ISC megaladon, or a converted soviet IDA-71. The meg copy will be superior in technical terms but the IDA more compact and streamlined for recreational diving. Still whichever way I go with it I'll need the bits above.
I definitely concur about the Oban pissup! I'm crewing on my mates boat on a trip up there over easter for 4 days #hic#
