How you will connect the board to shields and/or modules? On Jan 24, 6:04 pm, Sebastien Lelong <[email protected]> wrote: > Hi guys, > > So I'm about to change voltage regulators to dedicated ones (no more > adjustable). I'd use AMS1117-5V and AMS1117-3.3V. These requires 22µF output > filtering capacitors, tantalum ones. Just my curiosity: is tantalum really > needed ? Or "standard" aluminium electrolytic ones enough ? (can be > cheaper). I read tantalum's are smaller and more reliable. Do E-cap, C-cap, > ... form factors (I think that's the name) often used in SMD design ? they > really just look like PTH caps and seem very > tall:http://rocky.digikey.com/weblib/Nichicon/Web%20photos/UD%20SERIES%204... > > I would have kept 100nF input capacitors, but datasheet doesn't mention it's > required or recommended. > > I've also replaced solder jumper with "standard" PTH jumper, this way, if > prefered, soldering a wire is still possible. > > Cheers, > Seb > > 2011/1/23 Oliver Seitz <[email protected]> > > > > > >Also, what do you think about having standard 0.1" pitch jumpers, usable > > with pin headers (big but flexible), and potentially use 0805 0 ohm > > resistors instead (small, but more definitive). I hope you understand what I > > mean. Is it doable ? (I don't even want to ask if it's standard, but, maybe > > there's another better/standard option). > > > There are not-so-common 2.0mm jumpers that are somewhat smaller than the > > 0.1" types. But I for myself, I do have solder sucking wick, so solder > > jumpers would do for me. You can close and open them again, multiple times. > > I don't see it as a problem. If resistor pads were used, I'd solder a piece > > of wire there, no resistor. Wire is easier to remove than a real smd > > resistor. > > > For the voltage regulator, you could use an adjustable low-dropout type, > > like TS1117, but there are drawbacks like maximum input voltage=7V, minimum > > load current=10mA. > > > Greets, > > Kiste > > > -- > > You received this message because you are subscribed to the Google Groups > > "jallib" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<jallib%[email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/jallib?hl=en. > > -- > Sébastien Lelonghttp://www.sirloon.nethttp://sirbot.org > > jaluino_v02_bee_schematic.png > 60KViewDownload
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