Hi! This is probably a stupid and silly question, but I was just wondering whether the positioning of the ground and positive wires had an impact on the circuit. For example, will the wires' positioning affect the LED lighting up in the attached images? If so, which image is correct and what would happen in each image?
I'm sorry if the words on the board are not clear enough, but the black wire is connected to the ground pin and the red wire is connected to the 5V pin (even though that's already pretty obvious).
On the breadboard the 2 sets of red and 2 sets of black strips are not connected, so, for example, in Screen Shot 2019-05-10 at 6.28.14 pm.png you have the power connected to the top strips and the LED connected to the bottom. The top strips are not connected to the bottom strips so there is no ground connection to the LED.
Screen Shot 2019-05-10 at 6.29.15 pm.png is OK.
Does that help?
EDIT: Chris is correct because you have only connected ground to the LED, not to +5V.
plantiful_123:
(even though that's already pretty obvious).
Nothing is obvious because we don't know how much you know. Many times the actual source of the problem, is some misconception about how things work, or about proper procedure, or incorrect assumptions, etc. The only way we can catch things like that, is for you [the OP] to lay out, before us, your interpretation of "obvious".
And this is how I set up my breadboard -- especially if any digital switching is involved [as usually is my case]. The caps help mitigate high contact resistance, which is typical for these breadboards, and the relatively long power lines. And, of course, add those extra jumpers if your breadboard is bifurcated:
BUT, for just lighting up an LED, the added caps is overkill. I just showed you that, for the future, when you get into blinking that LED, and beyond
BTW: Make absolutely sure you get the polarity right on those 10uF caps! Especially if they are Tantalum ["tants"], unless, of course, you likeunannounced explosions [often fiery, in the case of a tant]
ReverseEMF: BTW: Make absolutely sure you get the polarity right on those 10uF caps! Especially if they are Tantalum ["tants"], unless, of course, you likeunannounced explosions [often fiery, in the case of a tant]
The only explosion I've ever experienced was an electrolytic (tantalum caps probably didn't exist yet, some 30 years ago).
I've never had a tantalum explode, but have had them catch on fire! Which is probably even more dangerous, especially if it happens when no-one is around...
wvmarle:
The only explosion I've ever experienced was an electrolytic (tantalum caps probably didn't exist yet, some 30 years ago).
I've never had a tantalum explode, but have had them catch on fire! Which is probably even more dangerous, especially if it happens when no-one is around...
Yeah, I guess you're right. Tants tend to fail in a manner of sizzle and smoke, and often flame. It's only happened to me a couple of times and I was there, only for the aftermath -- walked into the stench, and ascertained the culprit postmortem. Learned more from a YouTube video: https://youtu.be/XgKLIvEIl4U
Paul_KD7HB:
"unannounced explosions " The correct term is "unplanned discharge"!
Paul
"Unannounced" because it doesn't, typically, happen right away. "Explosion", well, because of the loud bang, and component confetti all over the place. The few times it happened to me [Aluminum Electrolytic], it was long after complacency set in, that they popped.
Strictly speaking electrolytics "vent" rather than explode, they are designed to do this "safely" (meaning no
sprapnel), but a high pressure jet of alkaline steam is definitely hazardous. If you plan to use underrated
electrolytics or plug them in backwards, wear eye-protection. Alternatively double-check everything, always
a great idea with new circuits, check twice, buy once.
