Originally Posted by wthenshaw
No recent activity on either of your builds spurs me to ask how is the progress Darlene?
Sorry for the lack of updates, but it's summer in the tropics and that means it's really uncomfortably hot working in the shop, and scuba diving is a lot more fun.
I actually took the 4th of July week off for vacation with the intention of getting a bunch done on the stretch, and ended up sick the whole week and most of the next, so that turned into a double whammy.
I had electronics parts come in from Digikey, so I'll be building out the remaining PCBs for the PWM controllers and such, as well as a custom "lab" unit for Martinm210 to use for his testing.
I thought that building him a precision, calibrated scale PWM controller, would be a way I could help contribute the community and show Martin some appreciation for all he's done.
I've had some thoughts on how I might make his more flexible, as well as unique for his purposes, so I'll be doing a revised PCB for his unit this weekend to incorporate those additions.
I'll build out the original PCB I made for his unit that's already to build, as a spare for my own testing.
So far I've built out one of the original 3 PCBs and it works fine, so once I build out the next two, I'll do Martin's revision.
Basically, his will be a standalone unit in its own enclosure with a single speed control knob and switch to select between internally generated PWM and, optionally, via a connection to a mobo CPU fan header, PWM control from a mobo.
What will really set his apart, is its docking station.
When plugged up to its docking station, it stops using the onboard basic speed control potentiometer, and uses the precision 10 turn potentiometer on the docking station that has a turns counting dial so that there is actually 0.1% resolution for repeatable settings.
The docking station also has a small integrated Kaze server 3.5 display for 2 pump speeds.
I'll put up a thread for it in the coming days as a mini build log.
DarleneEdited by IT Diva - 7/13/13 at 6:52am