Yep, your on the list Alan. =)
--- In simmons_drums@yahoogroups.com, <music@...> wrote:
Hey Richard...
Quick question, did you get my order for the 3 Carts I wish to purchase?
Cheers
Alan
--- In Simmons_Drums@yahoogroups.com , "Richard" <warlandr63@...> wrote:
>
> I've finalized the design stage and have so far ordered about 70% of the parts required. I've ordered enough to do around 40 of them at this stage so if anyone finds they want another, I'll have some on hand.
>
> I need to delay getting final circuit board manufacture done as I need to confirm that the battery holder I have ordered is going to fit on the board right. (The picture of the ordered item didn't match the datasheet info, I've gone by the datasheet but don't want any nasty surprises when board turn up with battery holders that wont fit.)
>
> Negotiating with suppliers to get some of the high cost items at the price I have budgeted is painful, but so far the estimated price of 80 bucks is looking spot on. The ram chips have been tough to source. The originals used by simmons draw around 100uA in standby. This would be no good for use with a 3.0v button cell...it would go flat to quickly.
>
> I have found a source of 6116alp-10 rams which are great, they only draw 0.05uA of current ( a 2000% decrease!) in standby which will mean the lithium battery will last a number of years before you would need to replace it. On that note, I will write a little "blurb" sheet for each cart. Essentially to change the battery, undo the case screws and take the lid off. After wondering at just how lovely the workmanship inside is (..joking) plug it into the SDS 6/7 turn on the SDS. This powers up the cart and retains the memory whilst you remove the battery and slip a new one in. Reverse the previous actions, remove the cart and screw the lid back on..simple
>
> I was going to try and fit a little circuit with LED to warn of low battery, but sadly no room to fit it..=(
>