I don't think I've ever had someone call me stupid in such a polite way beforeDexOS wrote:By the way nicely presented video
All pins have internal pull-up/pull-down resistors. That is not on the wiki. It is in the data sheet. That data sheet has a list of all GPIO pins with their special function. If you look at that table you also find the pull-up/down status after reset for each pin. I don't blame you for not finding the information. After all there are hundreds of pages with information, but I hink you could have asked for that before making remarks like "The information on this level of detail is all over the place and I don't really trust its accuracy". The information for that level of detail is all where it should be: in the data sheet under the GPIO section.MattHawkinsUK wrote:The diagram on the wiki has been updated so it has the proper GPIO labels on it.
I've now completed a few experiments with LEDs and switches. I always use my own pull up/down and limiting resistors because it is all too easy to make a mistake. For most peoples projects there isn't much to be gained by taking the risk.
The confusion about pin labelling shows that most people will not correctly manage the internal resistors so I think it is safer for people to add external resistors. The information on this level of detail is all over the place and I don't really trust its accuracy. No disrespect to the authors but the wiki doesn't make it clear what pins have internal resistors and how you know if they are enabled or not. So I'm ignoring them.
Manners are for people with too much time on there hands, like people that rejoin a forum just to post the above.sg84 wrote:Seems manners don't count for much either...DexOS wrote:Its seems knowledge counts for nothing these days
No manners are for *everyone* who desires to participate on this forum, and this goes both ways.DexOS wrote:Manners are for people with too much time on there hands, like people that rejoin a forum just to post the above.sg84 wrote:Seems manners don't count for much either...DexOS wrote:Its seems knowledge counts for nothing these days
Agreed - that probably came across as a bad first and only post. Here, have a second post to dilute it's impact by 50%abishur wrote:I do agree that there is no need to create a new account if you want to say something. Either have the conviction to say it from a single account or just let the comment remain unsaid.
ohrurwin wrote:Our argument was not with the LED circuit, which was always safe, it was with the switch circuit, which in the original fed 5V to the GPIO inputs. And with the practise of using 5V at all, which increases the risk of a random accident breaking the RaspPi.
Ah, that would explain why I couldn't find anything wrong in the video or the resources he linked to.The way RaspberryPiBeginners has produced the video without any technical details and then put those on a web site, means he could (and did,) edit them after the video was produced. By the time that Liz posted a link to the video, at least the main problems with the circuit had been fixed.
Yey back to my original idea. I was hoping to get a few made, 1 or 2 for myself and a few to give away.Lorian wrote:I think there is a case for a beginners board with some leds and a couple of switches and perhaps a DS18S20 and maybe even some buffered pins to a small breakout socket. Not everyone that is going to want to teach programming with the GPIO is going to want to make their own boards or use a breadboard.
I think a small custom circuit is in order, all sat on a female 2x13 header. It could be tiny, epecially if sm leds were used.
Perhaps the foundation might run a competition to see who can design the smallest, cheapest to produce board to do similar. might be fun.
And i'll buy one.domesday wrote:RaspberryPiBeginners is publishing his design, but it is only a simple board with a couple of LEDs and switches on.
If what you want is small buffer board then there are plans to publish the design for one in the MagPi magazine in a couple of issues time.
Could i be more confused? I tried it with the 2K resistor and it didn't work, so i swapped the 2k resistor backout for a cable and it worked. .....domesday wrote:2K will do fine.
HHmmm, I gave the lad at Maplin a list when I bought those R1 resisters. Looks like i need http://goo.gl/5255W app on my android phone to check that they are giving me. F*****g Maplin's.domesday wrote:They should be Brown, Black, Black, Red, they look like Brown, Black, Black, Black to me 100 Ω.
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