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WHAT THE FUCK THIS IS SO COOL??? omg this is some tony stark level shit im so awed.... BROTHER THIS IS GENUINELY SO FUCKING SICK it looks so complicated omg
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Ik it's really simple I just can't make it work and I know I have the right parts cuz the teachers made us get everything and I have the required parts for this but it just won't work. I've checked the connections of the wires and resistor multiple times and they were steady and connected. Then I checked the locations of the stuff on the breadboard and it was correct as well. I just don't know why it doesn't work. I used the same parts for circuits before and after this so they're not faulty either. I don't get it.
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-and this is the parts required, as well as a small lesson on resistor color code calculations.
HOW IT WORKS:
The mechanics of it are extemely simple. You press the button, and as long as it's being pressed, the LED is on. It shuts off once you let go.
PARTS REQUIRED:
- 420Ω resistor
- Wires
- 9 Volt battery and a connector part
- Small button
- Red LED
I'm not going to be diving into the technical parts of the circuit today. Instead, I'll simply give the schematics and list of parts. While I don't know how I'd describe the instructions, if a majority requests a tutorial video, I can post one.
HOW TO CALCULATE OHM (Ω)
You calculate the Ω of the resistors by the colors on them. Here's the color codes' numbers.
Black - 0
Brown - 1
Red - 2
Orange - 3
Yellow - 4
Green - 5
Blue - 6
Purple - 7
Gray - 8
White - 9
The most common last color of the resistor is either silver, gold, red, or brown. Here are their codes.
Silver - 10%
Gold - 5%
Red - 2%
Brown - 1%
You may ask, "what are the percentages? What is this?" and my answer would be, it's the tolerance.
The tolerance is the give-or-take of the possibility of the resistor's Ω being less or more than labeled. Just think of it as give-or-take.
The most common colors are the ones above, and I doubt you'll see any other ones on the resistors used in circuits like this.
Let's calculate the Ω of the resistor in the schematic above.
Yellow - red - black - gold.
Yellow = 4
Red = 2
Black = 10¹
Gold = 5%
Now you might be thinking, "what's the deal with the second to last color code?" and here is the answer.
The second to last color (or, the one before the tolerance code) is the multiplier. It uses the same color code as the other ones, except it starts with black being 1 instead of 0.
The color code decides what's going on top of the number 10, what we're multiplying it with.
Black means 10¹, which is 10.
We put together the numbers that come before the multiplier and tolerance, which are 4 and 2. It makes 42.
We add the zero from 10¹, and since it's 10, there's only a singular zero.
That brings us up to 420.
Now that we're done with Ω, we use the tolerance number.
It makes the final number as stated below;
420Ω±5%
And that's our resistor's code. We only need to look at the 420 Ohm, the tolerance part is more used for bigger and more technical circuits.
And there you go, you now know how to calculate the Ω of resistors, and (pretty much) can build a basic circuit!