dwestbury Posted January 13, 2020 Report Posted January 13, 2020 Has anyone attempted to design a custom PCB daughterboard that could attach to the 20x4 character LCD on the MB6582 and avoid having to solder the IDC cable directly to the display? I've never done such a thing (I'm a complete newbie to DIY electronics), but I was playing around on EasyEDA and came up this design, which could (theoretically) allow you to connect an unmodified cable. Thoughts?
latigid on Posted January 13, 2020 Report Posted January 13, 2020 @Altitude had a similar idea: http://midibox.org/forums/topic/20525-16pin-sil-to-16pin-dil-adapter/ Check that the fit works in a MB-6582, but I guess so?
dwestbury Posted January 13, 2020 Author Report Posted January 13, 2020 (edited) thanks @latigid on - I like the @Altitude design much better! Just ordered 3 of them... Cheers! Edited January 13, 2020 by dwestbury
latigid on Posted January 13, 2020 Report Posted January 13, 2020 Hope it works out! I can't say anything about whether the connections are correct, but here are some thoughts on the layout. Watch the clearance. It should ideally be as large as possible; often I work with ~0.4mm trace width and 0.5mm spacing (1mm trace-to-trace). Take particular care around unmasked copper such as through-hole pads (e.g. on the 2x8) Circled upper-left: the corner can be avoided by routing from the left/bottom left of the pad. Circles right: angles a bit messed. Neatest is to use 45° angles for everything. 1
dwestbury Posted January 13, 2020 Author Report Posted January 13, 2020 @latigid on great advice and appreciate you taking the time to review and comment.. Sticking with a 45 degree angle rule makes sense moving forward. It was a fun exercise for me to work out the design. Learning a ton from the pages here! Cheers! -Darrell
dwestbury Posted January 25, 2020 Author Report Posted January 25, 2020 Update: the mini-PCBs have arrived from OSHPark. Took about 1.5 weeks end-to-end, including int’l shipping to the US, so not bad. Hope to have time to solder and test tonight. The mInimum order was 3 pieces, but I should only need 1. Happy to send extras to anyone interested, at no cost for the PCB - just cover the postage.
dwestbury Posted January 30, 2020 Author Report Posted January 30, 2020 (edited) As expected, the pin conversion board works perfectly! Kudos to @Altitude for the design and for sharing! Big thanks to @latigid on for pointing me in the right direction! Edited January 30, 2020 by dwestbury
latigid on Posted January 30, 2020 Report Posted January 30, 2020 Nice, thanks for reporting back! Now trim that contrast! 1
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