On Tue, Feb 15, 2011 at 5:47 PM, John Gilpin <[email protected]>wrote:
> Sorry I have been out a bit today and therefore have missed quite a bit of > the goings-on on the list. Firstly, my 3 Auroras - all with SGCs attached > need new batteries and I even went to the trouble of building a prototype > using vero-board, a CR2032 cell and a suitable battery holder - from Maplins > - but had to experiment a bit to find something the correct diameter for the > mounting pins resulting in a loose connection which is rather unsuitable and > unreliable. I need three of any unit successfully produced. I offered to get > 50 or 100 produced by QUANTA but didn't think the demand would be worth the > efforts. Also, my prototype was too high to enable the SGC to slide into the > aperture for the expansion port on the Black Box QL. This restriction does > not apply to the Aurora expansion card which is mounted to a standard > backplane with a QuBide board for the Hard Drive(s). > The 7mm clearance from bottom of battery to the top of the case opening is not the worst limiting factor. The problem is the CPU in socket sat next to it - this puts a width limitation on the PCB that means that the four pins need to be within 0.05" (1.27mm) of the corner/edge of the PCB. One solution to this is to invert the PCB, and have the battery on the bottom of the PCB. I will of course have to have the PCBs made with RED solder resist, so they match the gold cards. > Please can you disclose your Surname so we know it's Dave Smith or Jones > we're communicating with? Thanks. > Dave Park of Austin, Texas, formerly of Bedford (where I worked at Sandy) and Milton Keynes, England. Dave _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
