-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!
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Good news, the professor did gave one week more. Bad news, it is still not enough. He also didn't like my last circuit so he made me change it. We can't use red, black, nor blue for anything but energizing and we also can't bend the wire. Now I'm patiently waiting for my friend to lend me his microcontroller again. Two more days and no more homework for this semester. I got this!
➜ This is my (studyblr) side blog!! My main is @angeline-elizabeth !
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Finally I had a true lab class. I haven't touch an oscilloscope in around 3 years, that's insane. In other news, my numerous workteams are driving me insane. Exams are really the easy part of the whole career, the engineering projects and homeworks are what truly kills you inside. All of you, wish me luck.
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So my professor asked us to do a DIY Arduino from scratch and its been a wild ride to get right. I got a rotary tool Dremel 3000 that I used to make the holes on the PCB. In the picture I am soldering the copper parts. The process was actually easier than it seems, but 2x the price of a regular Arduino. But we gotta learn how they are made I guess.
I'm currently drowning in homework. I love to build sure, but I hate making all that documentation that comes with it.
36 Trainees of RD Tata Technical Education Centre Placed at Dr. Reddy's Laboratories
Selections from Mechatronics, Electronics and Tool Engineering Branches
Key Points:
36 trainees from RD Tata TEC, Golmuri, selected by Dr. Reddy’s Laboratories
Selections span three branches: Mechatronics, Electronics and Tool Engineering
Institution cites industry-oriented training as key to consistent placement success
JAMSHEDPUR – The RD Tata Technical Education Centre, Golmuri, has…
