Electronics > Projects, Designs, and Technical Stuff

uSupply Custom LCD

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Maxlor:
I'm looking forward to hearing about the design/manufacturing process for custom displays as well!

As a general point that applies to all the screen layouts above: please use a more prominent decimal point. With the very narrow digit spacing, the decimal point becomes hard to see if it's this small (to test: use a reduced resolution image, or squint, or glance at the display for less than a second.) Adding a bit more space between digits so the decimal point is more visually distinct, or increasing it's size, or both would be a good fix.

Also, the display for the set display should be less prominent than the current display, so the user is less likely to mix them up accidentally. Dave's original design accounts for this nicely.

julianhigginson:

--- Quote from: xani on October 23, 2017, 10:42:18 am ---
Ah yes I saw that one. I looked, said "no knob, no service" and ignored it. The last thing I want from my bench supply is some wonky touchscreen

--- End quote ---

1) the last stretch goal added a knob!

2) it's open source... You want to adjust the design with knobs? Add them! :-)

kalel:
I haven't used any lab power supplies yet, so mine is an inexperienced opinion. I would also prefer knobs, either the multi turn stuff or encoders, versus physical buttons.

I don't know about reliability differences, micro switches have their limits too (if you had to press them all the time to adjust parameters).

As for a pure touchscreen solution - it also sounds difficult to use. I haven't checked the specific product, just generally. If you had one with only touchscreen, could you e.g. decrease current to test the brightness variation in an LED without looking at the screen? You might be able to program a current sweep in a modern supply (I don't know if you can, but I don't see why not), but I would still prefer the knobs.

fcb:
Forget putting the Watts calculation on the screen - of little actual use unless you have bigger plans for the unit.

Use the space to put a couple of symbols, like battery state for the LiIon and maybe your logo (when it boots up).

NivagSwerdna:
My ideal uSupply would allow me to charge my Li Ion cells.... and on completion it would show me how many mAhr it had pumped in to them.

So it would have "hr" as a segment and possibly also "Complete" or "Done"

Possibly also time in MMM:SS as it charges

Just sayin'

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