cimo Posted December 20, 2007 Report Share Posted December 20, 2007 hiit would be nice if here http://www.ucapps.de/mbhp/mbhp_dinx4_32buttons.pdf you could see where to connect all the buttons to GNDsimone Quote Link to comment Share on other sites More sharing options...
Wilba Posted December 20, 2007 Report Share Posted December 20, 2007 This diagram shows connecting all the switches to J5:Vs or J6:VsI don't see what the problem is. ??? Quote Link to comment Share on other sites More sharing options...
nILS Posted December 20, 2007 Report Share Posted December 20, 2007 The connections are all there, but it's easy to overlook them ;-) Quote Link to comment Share on other sites More sharing options...
cimo Posted December 20, 2007 Author Report Share Posted December 20, 2007 the connection to ground is not indicated... a guy in the spanish forum couldn t find out how to connect the buttons..simone Quote Link to comment Share on other sites More sharing options...
nILS Posted December 20, 2007 Report Share Posted December 20, 2007 It IS indicated. Quote Link to comment Share on other sites More sharing options...
DragonMaster Posted December 20, 2007 Report Share Posted December 20, 2007 Vs = groundAll the Vs pins are ground pins. Just connect the buttons there. Quote Link to comment Share on other sites More sharing options...
cimo Posted December 20, 2007 Author Report Share Posted December 20, 2007 Vs = groundAll the Vs pins are ground pins. Just connect the buttons there.yes, sure, but this is not the point.My point is that for a completely newbie even on electronics things that for you seem to be obvious they can be unclear to him/her, leading to:http://www.midibox.org/forum/index.php?topic=10374.0anyway, nevermind it is just a little detailuh! 500!simone Quote Link to comment Share on other sites More sharing options...
seppoman Posted December 20, 2007 Report Share Posted December 20, 2007 Hi Cimo,I don't see what could be wrong or needs to be improved in that schematic. I think the ability to understand (or to learn to understand) a super-simple schematic like this is an absolutely basic requirement to build anything midibox - after all, if someone doesn't have the slightest clue on how to read this schematic, he should probably stay away from anything electric. Two wires on every switch and the common side goes to the Vs terminals - the only thing not self-explanatory would be to explicitely state that the lines are meant to represent electric wires ;)S Quote Link to comment Share on other sites More sharing options...
Wilba Posted December 20, 2007 Report Share Posted December 20, 2007 I am intrigued how a newbie knew they needed to connect switches to ground, when I find no explicit mention of how to connect switches to the DIN module other than this diagram, which doesn't use the term ground. ??? Quote Link to comment Share on other sites More sharing options...
cimo Posted December 20, 2007 Author Report Share Posted December 20, 2007 Hi Cimo,I don't see what could be wrong or needs to be improved in that schematic. I think the ability to understand (or to learn to understand) a super-simple schematic like this is an absolutely basic requirement to build anything midibox - after all, if someone doesn't have the slightest clue on how to read this schematic, he should probably stay away from anything electric. Two wires on every switch and the common side goes to the Vs terminals - the only thing not self-explanatory would be to explicitely state that the lines are meant to represent electric wires WinkSyep, i admit, i agree with you, also the schematic is as it should be.On the other end it is nice to know that uCapps may be a place where people without the ability to understand (or to learn to understand) can improve their knwoledge and their ability (and wish, of course) to learn.Ok now i am going slightly off topic but regardingafter all, if someone doesn't have the slightest clue on how to read this schematic, he should probably stay away from anything electric.i am sure that there are quite a few persons out there that came to mother uCapps without really fully understanding how to read that schematic and now they are happily toggling their knobs :Pin that case people should stay away from main voltages and especially from asking 1000000 questions before even trying by themselves and reading reading reading Seppo, Wilba, etc etc i am not questioning (EDIT: only) you! I am mainly questioning myself, i ve been down at the Spanish forum in these last months trying to do my best when needed, it s not always so easy to understand how far you can go "trying" to help peoplesimone Quote Link to comment Share on other sites More sharing options...
seppoman Posted December 20, 2007 Report Share Posted December 20, 2007 i am sure that there are quite a few persons out there that came to mother uCapps without really fully understanding how to read that schematic and now they are happily toggling their knobs :Pok, that sentence probably sounds a bit too harsh - what I meant was "as long as someone doesn't have the slightest clue on how to read this schematic, he should probably stay away from anything electric - until he knows how to read it" :) Of course this wasn't meant as a "Newbie, stay away" statement.My point is: this schematic is so basic in a way that you really can't make it more newbie-friendly anymore without going back to a point where you start explaining what electricity is, that it has + and - poles, a voltage, can be AC and DC etc... I mean, everybody must understand that all this is a bit more complex and requires more understanding than exchanging a malfunctioning pot in a guitar amp. So there can't ever be a cookbook-style tutorial that would enable my grandmother to build a mb64, without boring and annoying everybody except my grandmother ;)But maybe it would really be a good idea to use only GND and Vcc in the schematics instead of Vd and Vs. I confess that I also have to check every time where the gnd symbol is in the schematic before knowing which of the both is GND :DS Quote Link to comment Share on other sites More sharing options...
TK. Posted December 20, 2007 Report Share Posted December 20, 2007 I've added a comment to the schematic (you probably need to refresh the browser to see the change).Maybe you haven't noticed this yet, but I'm doing such improvements every time I read that a newbie miss-interpreted a circuit... no need to discuss if it makes sense or not, just write a short comment, thats enough.I won't change the naming to GND and Vcc due to consistency reasons. There are hundreds of schematics, and thousand of PCBs where this CMOS naming style has been used in the past, I don't really see an advantage to change this to another naming style, it only leads to confusion.Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Wilba Posted December 21, 2007 Report Share Posted December 21, 2007 Not even CMOS datasheets are consistent... every 74HC165 datasheet I've seen uses Vcc/GND not Vdd/Vss. (If you find one that doesn't, please post a link here!)I can see how this can be confusing to newbies now...The PIC has Vdd=5V, Vss=ground.J9 has Vdd and Vss pins.J9 connects to DIN module, which also has Vdd=5V, Vss=ground.So far so good.Now look at a 74HC165 datasheet, it has Vcc/GND.Maybe we need to link this somewhere in the doco:http://encyclobeamia.solarbotics.net/articles/vxx.html Quote Link to comment Share on other sites More sharing options...
TK. Posted December 21, 2007 Report Share Posted December 21, 2007 I think that this is more confusing for experts than for newbies - nobody complained about this yet.It was intended from my side to call even the Vcc inputs Vss just to avoid confusion. And as you can see: more than 8 years it was successful (everybody connected the 74HC165 Vcc input to +5V).Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
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