Electronics > Projects, Designs, and Technical Stuff
uSupply Custom LCD
Corporate666:
--- Quote from: mikeselectricstuff on October 19, 2017, 07:51:54 am ---Horizontal bargraph for current would be good.
You should also put the EEVBLOG hand logo on there, because you can.
I'd be really interested in finding out about the process of getting a custom display made - tooling costs, unit costs,MOQ, leadtime, design rules etc.
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Just as a datapoint, I had a custom LCD made years ago (must have been 15 years back) by Excel Tech (now Excel Display http://www.excel-display.com/). It was for an automotive tachometer, and had a bar graph arranged in a crescent shape with numbers in the center.
I don't recall the exact unit price, but it was under $4/ea in quantities of 1000. There was a $3000 tooling charge. This included the driver chip (embedded on the edge of the panel) and the module had a flex cable mounted on it. I don't recall specific design rules, but I originally wanted the module to be round. Back then, nobody was doing round LCD's, so they suggested flat cuts on the corners... ultimately we ended up with a 10-sided polygon to approximate a circle. The only issue I ran into that caused a rework of my intended design was 'orphaned' segments in the center of the display that they weren't able to route out. Lead time was 3-4 weeks from payment received until first unit samples received, and another 3-4 weeks to produce the whole batch. Could have gotten them faster but I wasn't in a rush.
Dave, definitely interested to hear your experiences!
The Soulman:
Assuming this isn't going to be a high-power supply, I'd like a current readout in mA and power in mW.
And actual readings bigger than the set voltage and current, a led to indicate for cc/cv would be a nice bonus.
Another "novel" idea is to be able to link multiple of these psu's in some (galvanic separated..) way for simultaneous output on/off. :-+
hugo:
What do you think about this one:
ataradov:
--- Quote from: hugo on October 21, 2017, 12:39:15 am ---What do you think about this one:
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I like this the most out of all versions here.
julianhigginson:
--- Quote from: xani on October 20, 2017, 02:33:37 pm ---
--- Quote from: julianhigginson on October 20, 2017, 09:57:45 am ---Those of you who want the fully hackable/self-sourcable supply made with a more generic LCD should look into the crowd funded one that shipped the other month...
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which one ? I've been looking for something like battery powered power supply that could double as battery/phone charger (which could probably be easily hacked in into existing design if code was available)
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sorry - not battery powered... I didn't realise this was dave's intention for this product.
The fully DIY friendly option for a bench supply is this guy:
https://www.eevblog.com/forum/crowd-funded-projects/preparing-eez-h24005-for-crowdfunding/
all firmware and hardware is open source.
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