redstarcoder

Now, this is going to depend on the community but, you can try to leave it UUDDLRLRBABA or if people if it really helps with clarity that much, change it to UUDDLRLRBA and existing answers will eventually be edited to the new spec.

@ChristopherPeart, it doesn't look like anyone who opened the last time even can vote to re-open (I can't anyways). So maybe open a meta post and ask for help? This question really shouldn't have been closed.

@Closevoters, what exactly is unclear here? This question has answers, most are correct. I don't see what's unclear at all, I find this question very clear.

@KritixiLithos I assume spaces are not allowed, case-insensitive, expect a trailing character (newline).

@closevoters is there anything in particular that's left to fix?

Can I use the characters "udlr" or does it have to be arrow keys?

thank you very much for all the info! I've managed to answer much of my own questions while working and studying, but it's always nice to get definite answers from someone knowledgable :). The Mini has a voltage regulator? I had no idea! That really simplifies a lot for me.

I understand they consume a lot of power, but I'm almost 100% certain I can minimize that (we'll see when my chips come in).

Is an Arduino Pro Mini a good idea for finished projects? I read a lot of people say Arduino is usually just for the prototyping stage, which sounds fine to me but I can't find anything that's as cheap and powerful as a 16MHz Pro Mini clone ($4 CAD). Also the alternative presented usually seems to be to print your own PCB and grab an atmega chip, crystal, etc ... which is usually at least ~2x more expensive for the atmega chip alone.

Thank you!

I know I proabably can't get an exact reading, but I don't need one.

Is there any way I can test the frequency of the clock on an Arduino without an oscilloscope? I just want to know if these boards, when I recieve them, are in fact 16MHz and not 8MHz. If I created a sketch that simply counted up and displayed the result on a 16x2 LCD, and measured the time it took to get to a point (like 100000), would that be an accurate enough test? I'd imagine the 16MHz version would be ~2x faster.

Not each row? Okay thanks bye!

Of course! I'm using 220ohm resistors in a parallel circuit of LED rows for a dotmatrix display. The issue I ran into is I realised I'd need more than 40mA of current, but I wasn't really 100% sure what would happen to my LEDs.

Thanks! Yeah I was just wondering if they were synonymous :)

(I'm getting a voltmeter, but I don't have one yet hehe...)

@Asmyldof thanks a lot! About the voltage drop .. could I estimate that with "forward voltage" on the data sheet?

Wow that first link is exactly what I was looking for.

Thanks! I'll read them both now

I think just reading Ohm's Law answered my question. It won't explode.

This is probably a noob question. If I have 3.7v 200mA, and I run it through a device (like an LED) that's 3.7V 20mA then to ground, does the device end up getting 200mA and probably exploding, or do I end up with ~3.7v 180mA? I just get confused because sometimes people seems to refer to volts as current (too much current will blow up your device!!), others as amperes (you want to ultimately sink the current into something, things draw from the current, more volts more-or-less means more draw)

I thought I saw some on the wiki, but I didn't really read the section

Thanks!

Oh wow the errors start to make sense

It looks like the "*><>" in the title just borked it

Not so bad 28 Errors, 20 warning(s)

Now I'm wondering what validators have to say about the online *><> interpreter. Nothing good I bet

It gets kind of rediculous

Ah that's fair

Yup :)

Haha I was more wondering from your point of view, what exactly is a database?

Well basically anything can be a database! What limits one datastorage option from being a database or not? I think it being queryable typically qualifies it as a database.

@Poke well, that depends on the database :p

I still don't like SQL though, I prefer noSQL like MongoDB

I find now-a-days literature points people towards prepared statements

So I agree the other systems should be in place

I don't think we'll be able to change people's behaviour en masse on a voting platform ever. It seems every voting platform always has the issue of "whatever has lots of votes, gets more!".

But shorter

Either way that's basically the konami code challenge

What if I use the characters "\n\n "?

I understand that not everything makes it through and the system isn't awful or anything, just that does show its dark-side sometimes :)

(for this site anyways)

Wow that guide really makes the flaws in HNQ glaring

The distant ninja ... my explanation was non-existant though :)

HotNetworkQuestions (just woke up)

Here are a few simulators

Yeah I'm sure there must be an emulator that can run the code.

@Downgoat they must ... I'll Google that soon

Like distribute one with it?

build an arduino emulator into my program? I'm not 100% sure what you mean O: